Journal articles on the topic 'Renewable energy not elsewhere classified'
To see the other types of publications on this topic, follow the link: Renewable energy not elsewhere classified.
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 journal articles for your research on the topic 'Renewable energy not elsewhere classified.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.
1
Bisio, G. "Exergy Analysis of Thermal Energy Storage With Specific Remarks on the Variation of the Environmental Temperature." Journal of Solar Energy Engineering 118, no. 2 (May 1, 1996): 81–88. http://dx.doi.org/10.1115/1.2848020.
Full textAbstract:
Energy storage is a key technology for many purposes and in particular for air conditioning plants and a successful exploitation of solar energy. Thermal storage devices are usually classified as either variable temperature (“sensible heat”) or constant temperature (“latent heat”) devices. For both models a basic question is to determine the efficiency suitably: Only exergy efficiency appears a proper way. The aim of this paper is to examine exergy efficiency in both variable and constant temperature systems. From a general statement of exergy efficiency by the present author, two types of actual definitions are proposed, depending on the fact that the exergy of the fluid leaving the thermal storage during the charge phase can be either totally lost or utilized elsewhere. In addition, specific remarks are made about the exergy of a system in a periodically varying temperature environment.
2
Stefanelli, Robert D., Chad Walker, Derek Kornelsen, Diana Lewis, Debbie H. Martin, Jeff Masuda, Chantelle A. M. Richmond, Emily Root, Hannah Tait Neufeld, and Heather Castleden. "Renewable energy and energy autonomy: how Indigenous peoples in Canada are shaping an energy future." Environmental Reviews 27, no. 1 (March 2019): 95–105. http://dx.doi.org/10.1139/er-2018-0024.
Full textAbstract:
In 2015, the Liberal Party of Canada formed a majority federal government on a platform that included prioritizing Nation-to-Nation relationships with Indigenous (First Nations, Inuit, and Métis) peoples in the country and re-asserting global leadership in climate change action by moving away from fossil-fuel based extraction and toward renewable energy initiatives. It may be argued that addressing both of these issues, advancing Indigenous–Settler reconciliation, and mitigating climate change, can be done in the same space. Indeed, though Indigenous peoples in Canada and elsewhere have recently moved forward with renewable energy initiatives within their Territories, there has been very little critical analysis on just how such projects have been operationalized and whether renewable energy can or even should be considered a vehicle for reconciliation efforts. In this paper, we present a systematic review of Canadian literature (spanning from 1980 to 2017) concerning Indigenous peoples’ involvement in renewable energy to better understand the stated motivations and desires of Indigenous peoples in Canada taking leadership, partnering in, and (or) participating in the renewable energy sector. Using a series of keyword search strings across three academic databases, two theses databases, and a grey literature search, we retrieved literature (n = 980) that was subjected to four exclusionary forms and then thematically analyzed the included literature (n = 26). Our findings suggest Indigenous peoples’ experiences and motivations are varied, yet many are developing renewable energy in their Territories to: break free of colonial ties, move towards energy autonomy, establish more reliable energy systems, and reap the long-term financial benefits that clean energy can provide. Despite the apparent advantages seen throughout most of the literature reviewed here, we suggest further research in this area is necessary before this kind of positive rhetoric of renewable energy in Indigenous communities builds enough momentum that proponents become blind to possible shortcomings. We conclude with a broader discussion of the interactions between Indigenous–Settler reconciliation in the context of renewable energy projects as well as offering indicators for future research to fill current knowledge gaps.
3
Smith, Roy, and Rachel Welton. "Islands in the energy stream: regional cooperation in the Indian Ocean tourism sector." Central European Review of Economics and Management 4, no. 1 (March 15, 2020): 27–52. http://dx.doi.org/10.29015/cerem.831.
Full textAbstract:
Aim: This article considers the need to move away from a dependency on fossil fuels towards more sustainable renewable sources of energy production. The focus is on the tourism sector in two Indian Ocean destinations, Mauritius and the Seychelles. The broader aim, however, is to highlight the interconnectedness between public and private stakeholders and how lessons learned from these case studies could have broader applicability elsewhere.
Design/research methods: A case study approach has been taken drawing on data supplied by both the private tourism sector in the destinations under consideration and relevant government and regional reports.
Conclusions/findings: Progress has been made in the shift towards decarbonisation policies and practices in these destinations. This has been achieved via a cooperative approach between public and private stakeholders, extending the development of renewable energy infrastructure and supply to include sustainable education policies supported by both governments’ education departments and vocational programmes implemented by the larger hotels in these destinations.
Originality/value of the article: Although there have been other studies conducted on the promotion of renewable energy in small island states, there is a paucity of such research looking specifically at the tourism sector and the role of public/private partnerships in developing broader education for sustainable development programmes.
Implications: The case studies focus on highlighting how governments and tourism businesses can work towards shared goals, in this case decarbonisation and education for sustainability. The implication is that such a model could be applied elsewhere with equally positive results.
4
Wolsink, Maarten. "Framing in Renewable Energy Policies: A Glossary." Energies 13, no. 11 (June 4, 2020): 2871. http://dx.doi.org/10.3390/en13112871.
Full textAbstract:
The transformation of a power supply, a social-technical system suffering from a heavy lock-ins, requires structural adaptations which are extremely complex. All actors in social acceptance processes have either strong vested interests in the current system or are challenging these. In strategies developed by those actors, so-called ‘frames’ play a key role. These are biased problem definitions and mental shortcuts, tools to affect the course of decision-making processes. Examples are “clean coal”, “smart grid”, “base-load”, or “decentralized”. Framing is fundamental to political processes, including those of decision making on renewables. This review presents a glossary of significant frames used in social acceptance processes of renewables’ innovation in power supply systems. The identified frames are classified and presented with, in each entry, one significant frame discussed and analyzed in relation to its most associated frames. Overall, the contrast comes to the fore between the paradigm of the current heavy centralized and hierarchically managed power supply system, on the one hand, and the newly emerging concepts around distributed generation on the other hand. Within these two clusters and in between, certain frames are focused on issues of ownership and control of infrastructures, while others concern allocation of space for establishing infrastructure.
5
Li, Yangluxi, and Lei Chen. "Investigation of European modular façade system utilizing renewable energy." International Journal of Low-Carbon Technologies 17 (2022): 279–99. http://dx.doi.org/10.1093/ijlct/ctab101.
Full textAbstract:
Abstract The purpose of this investigation is to summarize modular façade construction using renewable energy features in different aspects. Researches done so far primarily focusing on building envelop have shown various constructions of building enclosure without energy usage. This paper mainly focuses on modular façade renovation system programmes of European Horizon 2020 [34] and IEA ECBCS Annex 50 Prefabricated Systems for Low Energy Renovation of Residential Buildings in terms of construction, material, installation and thermal performance. Four aspects of construction, material, installation and thermal performance are adopted to evaluate these practices. Related website, paper and report from European commission constitute the database providing for review. Final results illustrate that all modular façade systems mentioned above could be classified into three layers: interior; module and exterior layer, taking charge of disparate functions. Both insulation and energy usage achieve the innovative envelop constructions manufacture. Integrating the renewable energy resources utilization technique into insulated building façade system is the core of this innovative projects achievement.
6
Nirmal, Swati, and Tanu Rizvi. "A Review of Renewable Energy Systems for Industrial Applications." International Journal for Research in Applied Science and Engineering Technology 10, no. 9 (September 30, 2022): 1740–45. http://dx.doi.org/10.22214/ijraset.2022.46903.
Full textAbstract:
Abstract: Integrated renewable energy systems have numerous advantages and benefits compared to conventional energy systems, such as decentralized energy production, environmental impact reduction, and better energy security. Renewable energy systems can be classified under various categories: solar, wind, hydroelectric, biomass, geothermal, and ocean. The integration of these renewable energy resources can bring sustainable solutions and multiple products. The case studies signify the potential integration options of renewable energy systems including energy storage. Non-conventional renewable energy sources and systems (RESS) including but not limited to biomass, biogas, geothermal etc are increasingly playing an important role for electric power distribution and storage. The idea is to develop a resilient energy infrastructure minimizing the cost of remote power and support green and sustainable development efforts. Smart Grids use digital technologies and IOT solutions to intelligently react and adapt to changes in the Grid. Siemens Accelerator for Grids portfolio is the key to exploit the data in the grid. This allows operators to make grid operation more flexible, cost-efficient, more reliable, maintainable, safer and therefore, feasible.
7
Ruddat, Michael. "Public acceptance of wind energy – concepts, empirical drivers and some open questions." Wind Energy Science 7, no. 4 (August 11, 2022): 1679–91. http://dx.doi.org/10.5194/wes-7-1679-2022.
Full textAbstract:
Abstract. The further development of wind energy is of major importance for the success of the energy system transformation in Germany and elsewhere. This transition process is not an easy task. For example, the yearly installed capacity of wind energy onshore in Germany has been declining since 2017. Only relatively few new wind turbines were constructed especially in 2019. Problems are, for example, minimum distance requirements (e.g. residential areas, air safety), the high complexity of planning processes and local protests. Social science research has now dealt with the topic of public wind energy acceptance for quite some time. On the one hand, the specific kind of acceptance (e.g. local acceptance) has been subject to scientific discourse. On the other hand, different empirical drivers (e.g. perceived distributional or procedural fairness, trust in relevant actors of the transformation process, risk–benefit perceptions, participation) have been of special interest. This review deals with central definitions and concepts, as well as qualitative and quantitative empirical findings, of social science research concerning the acceptance of wind energy in Germany and elsewhere. Although there has been already a lot of valuable scientific work done, there are still some open questions left.
8
Chou, Cheng-Chih, and Liang-Rui Chen. "An Analysis of Behavioral Models Relating to Renewable Energy in Taiwan." Sustainability 13, no. 13 (June 29, 2021): 7296. http://dx.doi.org/10.3390/su13137296.
Full textAbstract:
This study sought to understand the behaviors and attitudes of people in Taiwan as they relate to the government’s RE policies by analyzing data from a questionnaire-based telephone survey conducted between 2013 and 2015. Demographic attributes in people’s behavioral models were analyzed for two variables: attention and support. Based on the findings, people’s behavioral models relating to RE were classified into five categories: key promotional group, promotional seed group, support-strengthening group, attention-strengthening group, and non-key promotional group. The attributes of these five segments were also analyzed and their corresponding promotional strategies were formulated. The overarching goal was to improve precision in marketing RE policies to various target groups in order to maximize impact.
9
Perane, Pranit B., Swapnil S. Loni, Sanjana U. Chavan, and H. D. Aiwale. "Zero Energy Building." International Journal for Research in Applied Science and Engineering Technology 10, no. 5 (May 31, 2022): 172–76. http://dx.doi.org/10.22214/ijraset.2022.42129.
Full textAbstract:
Abstract: Decarbonizing the building sector is extremely important to mitigating climate change as the sector contributes 40% of the overall energy consumption and 36% of the total greenhouse gas emissions in the world. Net-zero energy buildings are one of the promising decarbonization attempts due to their potential of decreasing the use of energy and increasing the total share of renewable energy. To achieve a net-zero energy building, it is necessary to decrease the energy demand by applying efficiency enhancement measures and using renewable energy sources. Net zero energy buildings can be classified into four models (Net-Zero Site Energy buildings, Net Zero Emissions buildings, Net-Zero Source Energy buildings, and Net-Zero Cost Energy buildings). A variety of technical, financial, and environmental factors should be considered during the decision-making process of net-zero energy building development, justifying the use of multi-criteria decision analysis methods for the design of net-zero energy buildings. This paper also discussed the contributions of renewable energy generation (hydropower, wind energy, solar, heat pumps, and bioenergy) to the development of net-zero energy buildings and reviewed its role in tackling the decarbonization challenge. Costbenefit analysis and life cycle assessment of net-zero energy building designs and their challenges were reviewed to shape the priorities of future development. It is important to develop a universal decision instrument for optimum design and operation of net-zero energy buildings Keywords: Zero Energy Building, Energy Efficiency, Greenhouse gases, Renewable Energy, Grid
10
Gan, Jiatian, Jingli Li, Wannian Qi, Aynur Kurban, Yi He, and Su Guo. "A Review on Capacity Optimization of Hybrid Renewable Power System with Energy Storage." E3S Web of Conferences 118 (2019): 02055. http://dx.doi.org/10.1051/e3sconf/201911802055.
Full textAbstract:
With the rapid development of the global economy, there is a sharp shortage of fossil energy sources. Therefore the development of renewable energy technologies such as wind power and solar power has become a hot issue nowadays. However, due to the randomness, intermittency and instability of renewable energy, it is difficult to provide continuous and stable electricity when it runs independently. Hybrid renewable power systems with energy storage can improve the reliability of power supply. Capacity optimization is the key of hybrid renewable power system design and the basis of optimal scheduling. In this paper, the capacity optimization of hybrid renewable power system with energy storage is summarized and classified. According to the different energy storage modes of the hybrid renewable power systems, the capacity optimization models, optimization methods and the software used are introduced.
11
Michaelides, Efstathios E. "Thermodynamics, Energy Dissipation, and Figures of Merit of Energy Storage Systems—A Critical Review." Energies 14, no. 19 (September 26, 2021): 6121. http://dx.doi.org/10.3390/en14196121.
Full textAbstract:
The path to the mitigation of global climate change and global carbon dioxide emissions avoidance leads to the large-scale substitution of fossil fuels for the generation of electricity with renewable energy sources. The transition to renewables necessitates the development of large-scale energy storage systems that will satisfy the hourly demand of the consumers. This paper offers an overview of the energy storage systems that are available to assist with the transition to renewable energy. The systems are classified as mechanical (PHS, CAES, flywheels, springs), electromagnetic (capacitors, electric and magnetic fields), electrochemical (batteries, including flow batteries), hydrogen and thermal energy storage systems. Emphasis is placed on the magnitude of energy storage each system is able to achieve, the thermodynamic characteristics, the particular applications the systems are suitable for, the pertinent figures of merit and the energy dissipation during the charging and discharging of the systems.
12
Kartal, Semiha, and Ömer Chousein. "Utilization of renewable energy sources in bioclimatic architecture in Greece." World Journal of Engineering 13, no. 1 (February 8, 2016): 18–22. http://dx.doi.org/10.1108/wje-02-2016-002.
Full textAbstract:
Purpose The aim of this study is to propose solutions to ensure comfort conditions for users by taking advantage of the bioclimatic architecture. This could serve as a solution to the energy shortage problem. Design/methodology/approach In this context, 40 bioclimatic buildings located in Greece were analyzed. These bioclimatic buildings were classified according to their climatic zones, functions, parameters pertaining to the physical and built environment, and the passive methods used for heating, cooling and lighting. Findings The high share of residential buildings in the distribution of Greece’s bioclimatic buildings according to climatic zones can be attributed to the large number of users that residential buildings have when compared to other types of buildings. Among the physical environmental parameters, climatic parameters were found to be highly influential. Other parameters had less significant effects, depending on land conditions. Originality value This study revealed the importance of bioclimatic applications in creating energy-efficient buildings. It is also important in terms of setting an example for creating bioclimatic architectural profiles of other countries.
13
Melnyk, Leonid, Oleksandr Kubatko, and Vladyslav Piven. "Renewable Energy Promotion with Economic Incentives: The Case of the EU." Scientific Conference on Economics and Entrepreneurship Proceedings SCEE`2021 Proceedings (February 17, 2022): 32–38. http://dx.doi.org/10.7250/scee.2021.0004.
Full textAbstract:
The paper investigates the economic ways of green energy promotion in the European Union. It is stated that environmental friendliness and economic expediency are the main drivers of renewable energy development. The paper emphasizes that the EU has significant achievements in green energy promotion. The EU encourages the use of renewables in a variety of ways, including tariff and non-tariff instruments. In the research different economic incentives are classified by certain criteria. It is outlined in the research that the feed-in tariff was the first and most widely used mechanism of support for green energy producers. At the same time, it is gradually being replaced by a feed-in premium (a system of allowances for additional generation). The paper also highlights the importance of non-tariff instruments, including tax incentives, green certificate system, investment grants, and subsidies.
14
Eltamaly, Ali M., Majed A. Alotaibi, Abdulrahman I. Alolah, and Mohamed A. Ahmed. "IoT-Based Hybrid Renewable Energy System for Smart Campus." Sustainability 13, no. 15 (July 31, 2021): 8555. http://dx.doi.org/10.3390/su13158555.
Full textAbstract:
There is a growing interest in increasing the penetration rate of renewable energy systems due to the drawbacks associated with the use of fossil fuels. However, the grid integration of renewable energy systems represents many challenging tasks for system operation, stability, reliability, and power quality. Small hybrid renewable energy systems (HRES) are small-scale power systems consisting of energy sources and storage units to manage and optimize energy production and consumption. Appropriate real-time monitoring of HRES plays an essential role in providing accurate information to enable the system operator to evaluate the overall performance and identify any abnormal conditions. This work proposes an internet of things (IoT) based architecture for HRES, consisting of a wind turbine, a photovoltaic system, a battery storage system, and a diesel generator. The proposed architecture is divided into four layers: namely power, data acquisition, communication network, and application layers. Due to various communication technologies and the missing of a standard communication model for HRES, this work, also, defines communication models for HRES based on the IEC 61850 standard. The monitoring parameters are classified into different categories, including electrical, status, and environmental information. The network modeling and simulation of a university campus is considered as a case study, and critical parameters, such as network topology, link capacity, and latency, are investigated and discussed.
15
Shayeghi, Hossein, Elnaz Shahryari, Mohammad Moradzadeh, and Pierluigi Siano. "A Survey on Microgrid Energy Management Considering Flexible Energy Sources." Energies 12, no. 11 (June 5, 2019): 2156. http://dx.doi.org/10.3390/en12112156.
Full textAbstract:
Aggregation of distributed generations (DGs) along with energy storage systems (ESSs) and controllable loads near power consumers has led to the concept of microgrids. However, the uncertain nature of renewable energy sources such as wind and photovoltaic generations, market prices and loads has led to difficulties in ensuring power quality and in balancing generation and consumption. To tackle these problems, microgrids should be managed by an energy management system (EMS) that facilitates the minimization of operational costs, emissions and peak loads while satisfying the microgrid technical constraints. Over the past years, microgrids’ EMS have been studied from different perspectives and have recently attracted considerable attention of researchers. To this end, in this paper a classification and a survey of EMSs has been carried out from a new point of view. EMSs have been classified into four categories based on the kind of the reserve system being used, including non-renewable, ESS, demand-side management (DSM) and hybrid systems. Moreover, using recent literature, EMSs have been reviewed in terms of uncertainty modeling techniques, objective functions (OFs) and constraints, optimization techniques, and simulation and experimental results presented in the literature.
16
Alabbasi, Abdulla, Jhuma Sadhukhan, Matthew Leach, and Mohammed Sanduk. "Sustainable Indicators for Integrating Renewable Energy in Bahrain’s Power Generation." Sustainability 14, no. 11 (May 26, 2022): 6535. http://dx.doi.org/10.3390/su14116535.
Full textAbstract:
The selection of sustainable indicators is crucial in measuring and understanding the required targets within the theme of sustainability for an energy system. This is because sustainability, as a term, is used in several fields and covers a variety of indicators based on the problem’s context and identity. Each researcher looks at sustainability from their own perspective and selects the indicators which align best with their objectives and their understanding of the topic. This paper aims to implement a systematic approach to choosing the sustainable indicators for Bahrain’s electrical production with renewables. The proposed framework analyses the frequency of indicators in a sample of 73 studies and screens them in accordance with the selection principles and experts’ views. The results reveal 15 indicators with strong relevance to sustainable growth for the power sector with renewables. These indicators are classified as either qualitative or quantitative, depending on our case study’s context and the appropriate practice according to the literature. Finally, each of the selected indicators was defined to reflect its intended purpose in our study, since the common practice within the present literature is to provide such indicators without explaining their actual purpose.
17
Wang, Kang Qi, Xiao Bin Tan, and Shan Jin Yu. "Load Scheduling Strategies Based on Dynamic Price in Smart Grid." Advanced Materials Research 860-863 (December 2013): 2495–500. http://dx.doi.org/10.4028/www.scientific.net/amr.860-863.2495.
Full textAbstract:
The combination of renewable energy and dynamic electricity pricing is an important feature of modern smart grid. Due to the dynamic electricity price and the intermittency nature of renewable energy, a local small-scaled smart grid (microgrid) needs to intelligently schedule various work loads to determine their start and end time in order to maximize the utilization of renewable energy and minimize the total electricity cost. Since the workload that can be shifted/scheduled is classified into interruptible load and non-interruptible load, in this paper we present two novel recursive scheduling strategies based on dynamic programming for both categories. The simulation experiment demonstrates that our strategies can effectively save energy expenditure and increase the proportion of renewable energy in overall energy consumption.
18
Adendorff, C. M., Harvey Keown, and Ric Amansure. "The development of a socio-economic model to promote women’s empowerment initiatives in the renewable energy sector of South Africa." Journal of Energy in Southern Africa 31, no. 2 (June 14, 2020): 34–47. http://dx.doi.org/10.17159/2413-3051/2020/v31i2a6166.
Full textAbstract:
This study investigates the main contributors that can positively influence the socio-economic empowerment of women in the renewable energy sector in the Republic of South Africa, and recommends new and innovative approaches to mainstream gender in the sector. Empirical evidence showed that ethical leadership positively influences good governance and successful women’s empowerment. The results also indicated that social investment and broad-based black economic empowerment positively influence successful women’s empowerment. Finally, the results indicated that sustainable programmes are a positive contributing factor to good governance. However, the respondents did not consider stakeholder engagement statistically significant to good governance or successful women’s empowerment. This study also has the potential to contribute to the improvement of impoverished communities in South Africa and elsewhere.
19
Zheng, Xianwei, Yan Fu, Jie Chang, and Shengyou Liang. "Classified Separation of Flash Pyrolysis Oil." BioEnergy Research 6, no. 4 (February 6, 2013): 1165–72. http://dx.doi.org/10.1007/s12155-013-9298-3.
Full text
20
Bánszki, Lívia, Tamás Rátonyi, and Endre Harsányi. "Evalution of energy for bioethanol production." Acta Agraria Debreceniensis, no. 51 (February 10, 2013): 77–80. http://dx.doi.org/10.34101/actaagrar/51/2066.
Full textAbstract:
The objective of this study was the ethanol which classified as agro fuels. The aim of our research was the calculation of efficiency of bioethanol production, and evaluates the yield of maize hybrids grown for this purpose. We examined the energy demand of corn production per hectare in two vintages of 2009 and 2010. The focus of the experiment was placed in three different doze of fertilizer. Results show that the control corn plot used the least amount of non-renewable energy. Improving starch yield by adding fertilizer required additional nonrenewable energy inputs. So then the invested energy has a great impact on the efficiency.
21
Hornborg, Alf, Gustav Cederlöf, and Andreas Roos. "Has Cuba exposed the myth of “free” solar power? Energy, space, and justice." Environment and Planning E: Nature and Space 2, no. 4 (August 2, 2019): 989–1008. http://dx.doi.org/10.1177/2514848619863607.
Full textAbstract:
Given the many problems with fossil energy, the fact that solar energy still only constitutes an insignificant fraction of global energy use requires explanation. The most common explanation is that multinational corporations with vested interests in fossil fuels have been actively preventing the development of solar energy technologies. But this explanation is difficult to apply to the case of Cuba. This article takes Cuban energy policy since the 1990s as a starting point to understand the sociometabolic prerequisites of a renewable energy transition. In 2014, Cuba embarked on a new renewable energy strategy while 95% of the island’s electricity was still generated from petroleum products. To explain Cuba’s halting renewable energy transition, we demonstrate that modern energy technologies are always embedded in global flows of resources and processes of capital accumulation. The requisite investments of capital and labor in energy technology represent substantial, indirect land requirements beyond the space occupied by the technological infrastructure itself. The theoretical argument is that energy technologies should be perceived not simply as local, politically neutral accomplishments of engineering but as sociometabolic displacement strategies, appropriating space from elsewhere. From an interdisciplinary perspective, this means that assessments of a technology’s “power density” also need to consider the spatial demands of the global economic context that makes the technology feasible. The Cuban case illustrates how visions of a renewable energy transition in both mainstream and Marxist thought will need to be based on a radically transformed ontology of technology attentive to global political economy and energy justice. Ultimately, the global anticipation of a transition to renewable energy implicates illusory assumptions about “technology” that have been taken for granted since the Industrial Revolution.
22
Ollier, Cliff. "Sea level and the carbonate sand factory of South Australia." Energy & Environment 28, no. 3 (December 12, 2016): 283–87. http://dx.doi.org/10.1177/0958305x16683079.
Full textAbstract:
Stable parts of the South Australia coast show that the last interglacial sea level was 2 m higher than present, but elsewhere there has been relative subsidence up to 7 m and uplift of 18 m. Estimates of changing sea level, and future projections, should state the time period involved and the tectonic background to be of any use. The coast contains ‘carbonate sand factories’ where organisms produce vast amounts of sand by fixing carbon dioxide as carbonates. Far from dissolving carbonate by acidification, carbon dioxide is an essential part of carbonate production and the continued maintenance and growth of coasts and reefs. Government policies to adapt renewable energy are unlikely to affect the system.
23
Wallsgrove, Richard, Jisuk Woo, Jae-Hyup Lee, and Lorraine Akiba. "The Emerging Potential of Microgrids in the Transition to 100% Renewable Energy Systems." Energies 14, no. 6 (March 18, 2021): 1687. http://dx.doi.org/10.3390/en14061687.
Full textAbstract:
International, national, and subnational laws and policies call for rapidly decarbonizing energy systems around the globe. This effort relies heavily on renewable electricity and calls for a transition that is: (i) flexible enough to accommodate existing and new electricity end uses and users; (ii) resilient in response to climate change and other threats to electricity infrastructure; (iii) cost-effective in comparison to alternatives; and (iv) just in the face of energy systems that are often the result of—or the cause of—procedural, distributive, and historical injustices. Acknowledging the intertwined roles of technology and policy, this work provides a cross-disciplinary review of how microgrids may contribute to renewable electricity systems that are flexible, resilient, cost-effective, and just (including illustrative examples from Korea, California, New York, the European Union, and elsewhere). Following this review of generalized microgrid characteristics, we more closely examine the role and potential of microgrids in two United States jurisdictions that have adopted 100% renewable electricity standards (Hawai‘i and Puerto Rico), and which are actively developing regulatory regimes putatively designed to enable renewable microgrids. Collectively, this review shows that although microgrids have the potential to support the transition to 100% renewable electricity in a variety of ways, the emerging policy structures require substantial further development to operationalize that potential. We conclude that unresolved fundamental policy tensions arise from justice considerations, such as how to distribute the benefits and burdens of microgrid infrastructure, rather than from technical questions about microgrid topologies and operating characteristics. Nonetheless, technical and quantitative future research will be necessary to assist regulators as they develop microgrid policies. In particular, there is a need to develop socio–techno–economic analyses of cost-effectiveness, which consider a broad range of potential benefits and costs.
24
Frattari, Antonio. "Casazeroenergy: An Italian Prototype of Zero Energy Building." Open House International 38, no. 3 (September 1, 2013): 25–30. http://dx.doi.org/10.1108/ohi-03-2013-b0004.
Full textAbstract:
CasaZeroEnergy is the prototype for a building that does not use energy produced from non-renewable sources, but produces its require energy by using alternative energetic systems. Designed according to the principles of bioclimatic architecture, the building was integrated with passive systems for optimizing the site's climatic conditions for heating in winter and for cooling and ventilation in summer. The house was constructed with natural, renewable, recycled and recyclable materials. For this reason it can be classified as a “natural building”. Its main feature is the integration between the building and the alternative systems in order to produce energy from renewable sources: sunspace, solar collectors, photovoltaic panels, a geothermal system and a pellet boiler system. Home automation manages all the mechanical systems to ensure comfort and reduced energy consumption at the same time. The sunspace is a passive solar system used mainly for heating indoor spaces during the winter season. The building's cooling system is based on natural ventilation strategies and on geothermal heat pumps. The building is provided with shading systems. A smart system was devised to guarantee user safety and security. This kind of system can be controlled remotely and provides constant security for the building.
25
Onen, Patrick Sunday, Geev Mokryani, and Rana H. A. Zubo. "Planning of Multi-Vector Energy Systems with High Penetration of Renewable Energy Source: A Comprehensive Review." Energies 15, no. 15 (August 5, 2022): 5717. http://dx.doi.org/10.3390/en15155717.
Full textAbstract:
The increasing use of high shares of renewable energy sources (RESs) in the current electricity network introduces challenges to the design and management of the electricity network due to the variation and uncertainty nature of the RESs. Some existing energy infrastructures, such as heat, gas, and transport, all have some level of inbuilt storage capacity and demand response (DR) potentials that can be exploited in an energy system integration to give the electricity network some level of flexibility and promote an efficient transition to a low-carbon, resilient, and robust energy system. The process of integrating different energy infrastructure is known as multi-vector energy systems (MESs). This paper reviews different studies on the planning of MESs using the energy hubs (EHs) approach. The EHs model used in this paper links different energy vectors such as gas, electricity, and heat energy vectors in its planning model, as opposed to planning each energy vector independently, in order to provide more flexibility in the system, minimise total planning cost, and encourage high penetration of renewable energy source for future energy demands. In addition, different uncertainty modelling and optimization methods that have been used in past studies in planning of EH are classified and reviewed to ascertain the appropriate techniques for addressing RESs uncertainty when planning future EH. Numerical results show 12% reduction in the planning cost in the case of integrated planning with other energy vectors compared to independent planning.
26
Žičkienė, Agnė, Mangirdas Morkunas, Artiom Volkov, Tomas Balezentis, Dalia Streimikiene, and Indre Siksnelyte-Butkiene. "Sustainable Energy Development and Climate Change Mitigation at the Local Level through the Lens of Renewable Energy: Evidence from Lithuanian Case Study." Energies 15, no. 3 (January 28, 2022): 980. http://dx.doi.org/10.3390/en15030980.
Full textAbstract:
The penetration of renewable energy is one of the main challenges for sustainable energy development. Local governments across the European Union commit to development and implementation of the Sustainable Energy (and Climate) Action Plan. This paper focuses on the case of Lithuania—a Central and Eastern European country. Almost one-third of Lithuanian municipalities have joined the Covenant of Mayors and prepared the plans that include SWOT analysis. However, there is a lack of information on how those plans contribute to climate change mitigation and sustainable energy development. This study identifies the links between key policy financial instruments, increasing energy efficiency. The Strategic Action Plans aimed at reducing GHG emissions and energy consumption in Lithuanian municipalities are analyzed. The challenges in promoting the renewable energy generation in Lithuanian rural regions are discussed. Moreover, the importance of strengths, weaknesses, opportunities, and threats identified is elicited at the local level. The study uses a combination of methods, such as expert surveys and SWOT analysis, that complements the tools used for regional energy climate planning and allows for overarching analysis. The expert survey shows that priority is given for renovation of buildings and modernization of energy infrastructure, making them more sustainable and more energy efficient. The results also show that, in the case of Lithuania (and possibly elsewhere in the post-Soviet countries), conditions and opportunities should be created beforehand to increase energy efficiency. Once this is achieved, the policies should focus on energy transition by switching to sustainable energy resources.
27
Karasmanaki, Evangelia, Spyridon Galatsidas, and Georgios Tsantopoulos. "An Investigation of Factors Affecting the Willingness to Invest in Renewables among Environmental Students: A Logistic Regression Approach." Sustainability 11, no. 18 (September 13, 2019): 5012. http://dx.doi.org/10.3390/su11185012.
Full textAbstract:
Renewable energy sources (RES) have gained increased popularity across the world mainly due to their ability to contribute to environmental protection through the generation of infinite ‘clean’ energy. To achieve a greater diffusion of renewables, however, small-scale investments implemented by individuals are critically important. In contrast to citizens whose attitudes have been consistently explored by research, there is little evidence on the attitudes towards investments among environmental students who will occupy positions of responsibility and play key roles in the environmental sector in the future. Hence, the purpose of the present study is to identify the most important factors that affect environmental students’ willingness to invest in renewable energy (RE) by developing a logistic regression model. According to our analysis, the participants in their majority expressed their willingness to invest, while environmental values, the low risk and profitability of renewable investments, as well as preferences for certain energy types were significant factors determining this willingness. However, willingness to invest was irrespective of the current taxation and subsidies, suggesting that significant improvements are required in these areas. The present study could be particularly useful for policymakers since the necessary steps to create favorable investment environments in Greece and elsewhere are highlighted.
28
Gómez-Sacedón, Celia, Ester López-Fernández, Ana Raquel de la Osa-Puebla, Fernando Dorado-Fernández, Ernesto Amores-Vera, and Antonio de Lucas-Consuegra. "Preliminary Design of a Self-Sufficient Electrical Storage System Based on Electrolytic Hydrogen for Power Supply in a Residential Application." Applied Sciences 11, no. 20 (October 14, 2021): 9582. http://dx.doi.org/10.3390/app11209582.
Full textAbstract:
The use of renewable energy and hydrogen technology is a sustainable solution for the intermittent feature of renewable energies. Hence, the aim of the present work is to design a self-sufficient system for a one-family house by coupling a solar photovoltaic array and an anion exchange membrane water electrolyzer (AEMWE). The first step is the selection of the photovoltaic panel by using PV-SYST 7.0 software. Then, the hydrogen production system is calculated by coupling the electrolyzer and photovoltaic panel current–potential curves. A fuel cell is selected to use the hydrogen produced when solar energy is not available. Finally, the hydrogen storage tank is also estimated to store hydrogen for a design basis of four consecutive cloudy days according to the hydrogen consumption of the fuel cell. The whole system is designed by a simple procedure for a specific location in Ciudad Real (Spain) for January, which is known as the coldest month of the year. The simple procedure described in this work could be used elsewhere and demonstrated that the hydrogen production at low scale is a suitable technology to use renewable energy for self-energy supporting in a residential application without any connection to the grid.
29
Carmona-Martínez, Alessandro A., Alejandro Fresneda-Cruz, Asier Rueda, Olgu Birgi, Cosette Khawaja, Rainer Janssen, Bas Davidis, et al. "Renewable Power and Heat for the Decarbonisation of Energy-Intensive Industries." Processes 11, no. 1 (December 22, 2022): 18. http://dx.doi.org/10.3390/pr11010018.
Full textAbstract:
The present review provides a catalogue of relevant renewable energy (RE) technologies currently available (regarding the 2030 scope) and to be available in the transition towards 2050 for the decarbonisation of Energy Intensive Industries (EIIs). RE solutions have been classified into technologies based on the use of renewable electricity and those used to produce heat for multiple industrial processes. Electrification will be key thanks to the gradual decrease in renewable power prices and the conversion of natural-gas-dependent processes. Industrial processes that are not eligible for electrification will still need a form of renewable heat. Among them, the following have been identified: concentrating solar power, heat pumps, and geothermal energy. These can supply a broad range of needed temperatures. Biomass will be a key element not only in the decarbonisation of conventional combustion systems but also as a biofuel feedstock. Biomethane and green hydrogen are considered essential. Biomethane can allow a straightforward transition from fossil-based natural gas to renewable gas. Green hydrogen production technologies will be required to increase their maturity and availability in Europe (EU). EIIs’ decarbonisation will occur through the progressive use of an energy mix that allows EU industrial sectors to remain competitive on a global scale. Each industrial sector will require specific renewable energy solutions, especially the top greenhouse gas-emitting industries. This analysis has also been conceived as a starting point for discussions with potential decision makers to facilitate a more rapid transition of EIIs to full decarbonisation.
30
Halder, Bijay, Papiya Banik, Hussein Almohamad, Ahmed Abdullah Al Dughairi, Motrih Al-Mutiry, Haya Falah Al Shahrani, and Hazem Ghassan Abdo. "Land Suitability Investigation for Solar Power Plant Using GIS, AHP and Multi-Criteria Decision Approach: A Case of Megacity Kolkata, West Bengal, India." Sustainability 14, no. 18 (September 8, 2022): 11276. http://dx.doi.org/10.3390/su141811276.
Full textAbstract:
Renewable energy sources are the most necessitated natural energy to reduce fossil fuels globally. Fossil fuel is the most valuable and limited resource on the planet, but on the other hand, renewable energy creates less pollution. Solar energy is the most effective renewable resource for daily use. Solar power plants are necessary for domestic and daily use. Remote sensing and geographic information technology (GIS) were used for this study to delineate the possible site selection of solar power plants in Kolkata and the surrounding area in West Bengal, India. The analytical hierarchy process (AHP) and the multi-criteria decision-making process (MCDA) were used for each weight calculation and ArcGIS v10.8 was applied for weighted overlay analysis (WOA) for delineation of the result. The site suitability map was developed using a pairwise comparison matrix and the weights were calculated for each criterion. The suitability map was divided into five categories, from not suitable to very highly suitable. A total of 474.21 km2 (10.69%) of the area was classified as very highly suitable whereas 249.54 km2 (5.62%) area was classified as not suitable because of the water area and east Kolkata wetland. A total of 1438.15 km2 (32.43%) of the area was classified as highly suitable for a solar power plant. The Kolkata megacity and water body locations were identified as moderate to not suitable sites. Very high and high-potential sites were identified 2 to 5 km from the central business district (CBD) location, which is Dharmotala. Renewable energy source is needed in the megacity of Kolkata. If solar power plants are contracted then the demand for fossil fuel will be reduced one day, and that will help the environment as well as the society in terms of sustainable development. This study result is helpful for administrators, urban planners, developers, and other stakeholders for the implementation and development of a new solar power plant in the study area.
31
Sharpe, Tim. "Building Mounted Wind Turbines on Existing Multi-Storey Housing." Open House International 33, no. 3 (September 1, 2008): 60–69. http://dx.doi.org/10.1108/ohi-03-2008-b0007.
Full textAbstract:
One of the most significant challenges facing contemporary architectural and urban design is how it can become more sustainable. Energy consumption by housing is a major source of greenhouse gas emissions and a cause of depletion of non-renewable energy sources. Of particular concern is existing stock, which has the worst performance and is hardest to improve. One means of addressing these issues that is attracting increasing interest is the integration of embedded renewable energy technologies. This paper discusses the use of wind turbines on buildings as a response to climate change legislation. It examines the potential for embedded generation in a specific built form (existing high rise housing) and places this in the context of a particular geographical location (Glasgow, Scotland) where the existing provision is highly problematic, but which also presents significant potential. It describes findings from two projects in Glasgow, a pilot installation on a city centre multi-storey block, and subsequent feasibility study for a Housing Association managed multi-storey block and identifies the problems and opportunities that may be applied in similar projects elsewhere.
32
Hurde, Yogeeta, and Nandkishor . "Grid Connected Energy System four leg Inverter for DC Voltage and Power Improvement." IJOSTHE 5, no. 4 (August 14, 2018): 4. http://dx.doi.org/10.24113/ojssports.v5i4.72.
Full textAbstract:
The first power systems were DG systems designed to meet the needs of local areas.Full load DG applications showed greater benefits in terms of power and performance as well as reducing transmission losses. GDs are very suitable for a specific location and for specific applications because they require a short construction time and require little investment. It is defined on the basis of the size of the plant, which can vary from a few KW to MW (10-50 MW). GD options can be classified as renewable or non-renewable sources from fuel sources. This study deals with a newly-conceived voltage control method for three-phase four-leg voltage source inverters (VSIs) which are being required in autonomous power generating units devoted to supply both three-phase and single-phase electrical loads
33
Kuehn, Thomas H. "Airborne Infection Control in Health Care Facilities." Journal of Solar Energy Engineering 125, no. 3 (August 1, 2003): 366–71. http://dx.doi.org/10.1115/1.1592187.
Full textAbstract:
Documented correlations between building occupant health effects and exposure to indoor airborne contaminants are very limited because of low indoor concentrations and confounding exposure elsewhere. However, an important exception has been found in hospitals where immune compromised patient mortality has been directly linked to increased indoor airborne fungal contamination caused by construction activity. Inhalation of viable Aspergillus spores often results in invasive pulmonary aspergillosis, a disease with a high fatality rate. A review of the literature is given and recommendations and needs are outlined for barriers, filtration, air pressure control and bioaerosol sensors.
34
Georgious, Ramy, Rovan Refaat, Jorge Garcia, and Ahmed A. Daoud. "Review on Energy Storage Systems in Microgrids." Electronics 10, no. 17 (September 2, 2021): 2134. http://dx.doi.org/10.3390/electronics10172134.
Full textAbstract:
Energy storage systems (ESSs) are gaining a lot of interest due to the trend of increasing the use of renewable energies. This paper reviews the different ESSs in power systems, especially microgrids showing their essential role in enhancing the performance of electrical systems. Therefore, The ESSs classified into various technologies as a function of the energy storage form and the main relevant technical parameters. In this review paper, the most common classifications are presented, summarized, and compared according to their characteristics. A specific interest in electrochemical ESSs, especially battery energy storage systems, focusing on their classifications due to their importance in the residential sector. Besides that, the benefits and drawbacks of Lithium-Ion (Li-Ion) batteries are discussed due to their significance. Finally, the environmental impact of these ESSs is discussed.
35
Orzechowski, Mateusz, and Tadeusz Orzechowski. "Energy saving and optimum insulation thicknesses in building upgrading." MATEC Web of Conferences 240 (2018): 04007. http://dx.doi.org/10.1051/matecconf/201824004007.
Full textAbstract:
Heat pumps are classified as ecologically friendly heat-generating devices and are one of the most suitable solutions for improving energy efficiency in buildings. Systems based on such solutions replace conventional sources very well. Household sector is one of the major energy consumers, where energy is used mainly for space heating and providing hot water. To increase renewable energy consumption levels, it is necessary to take decisive actions aimed at energy modernization of existing buildings. Particular emphasis must be put on the use of renewable energy sources. A wide selection of insulation materials is available on the market, however proper technologies are required to apply those materials, especially for historical buildings. Therefore, while planning investment, a question must be answered what type of material should be used, and what costs that will generate. The paper presents simple methodology for calculating the optimal insulation thickness so that the costs of the thermo-modernization would be covered by savings in heating expenses, when bank loan for the project is available at fixed interest rate.
36
Nurek, Tomasz, Arkadiusz Gendek, and Kamil Roman. "Forest residues as a renewable source of energy: Elemental composition and physical properties." BioResources 14, no. 1 (November 5, 2018): 6–20. http://dx.doi.org/10.15376/biores.14.1.6-20.
Full textAbstract:
Forest residues are a potentially important source of renewable energy. They are generated as a byproduct of timber harvesting around the world. To optimize the utilization of such biomass, one must know its physical and chemical properties. This paper presents an analysis of comminuted forest residues from Pinus sylvestris L. They were classified into four size fractions for which three density parameters were established pursuant to relevant standards. The mean bulk density of the fractions amounted to 110 to 190 kg/m3, apparent density 725 to 908 kg/m3, and specific density 1111 to 1350 kg/m3. The findings were compared to the results of previous research on other forms of forest biomass. The measured apparent-to-specific density conversion coefficient was β = 0.64. The elementary composition of forest residues measured in this work differed from that of other biomass types described in literature. In terms of carbon, nitrogen, sulfur, oxygen, and ash content, statistical analysis showed that the two compared types of biomass (forest residues and energy wood chips) formed two separate homogeneous groups, while both of these materials constituted one homogeneous group in the case of hydrogen content. The calorific value of the forest residues was 15.78 ± 0.39 MJ/kg.
37
Shabbiruddin, Neeraj Kanwar, Vinay Kumar Jadoun, Majed A. Alotaibi, Hasmat Malik, and Mohammed E. Nassar. "Fuzzy-Based Investigation of Challenges for the Deployment of Renewable Energy Power Generation." Energies 15, no. 1 (December 22, 2021): 58. http://dx.doi.org/10.3390/en15010058.
Full textAbstract:
Studying and analyzing the challenges that the renewable energy sector faces can help evaluate the risks and improve the planning. This research is done by considering the challenges in the implementation of sustainable generation of electricity through RESs in India, based on factors, including technical, financial, involvement, support, and others. The triangular fuzzy number (TFN) method, based on fuzzy logic concept, is used to analyze the challenges in this study. In general, TFN comprises of three numbers, likewise Gaussian fuzzy numbers, trapezoidal fuzzy numbers also exist. The classified sets of numbers are denotations to decision-makers’ perspective or a choice towards the criterion preference. Although alternatives are many to design a fuzzy set depending on elements count, the TFNs are the ones considered as actual representations of a fuzzy number. On the other hand, cases the Gaussian or trapezoidal, are manifestations of fuzzy intervals. Another argument is that the membership function shape corresponding to the number of fuzzy set elements is largely dependent on the study. The challenges identified along with analysis in this paper will help the industry, governments, and policymakers focus and tackle essential issues to facilitate further the deployment of RESs in India towards a more sustainable country.
38
Estevao, Joao. "An Analysis of the Impact of the 2030 Agreement on R&D Intensity in the Energy Sector." International Journal of Energy Economics and Policy 12, no. 4 (July 19, 2022): 204–16. http://dx.doi.org/10.32479/ijeep.13219.
Full textAbstract:
European Union countries signed the 2030 Climate and Energy Framework Agreement on October 24, 2014. This framework brings with it changes in the expectations of energy consumers and producers that has opened new avenues of research. Because the 2030 Agreement imposed targets to be achieved by 2030, energy companies could increase their R&D expenditures as they search for increased efficiency through a reduction of carbon dioxide emissions and stronger base in renewable sources that promotes innovation. In addition, the risks that arise from climate change can compromise the successful achievement of the targets, such as 27% renewable energy consumption, reduction in emissions of carbon dioxide by at least 40% and to improve energy efficiency. In this study, I conduct an evaluation of the behavior of R&D intensity in this sector. It analyze the behavior of companies related to the electricity sector in two different moments, before and after the 2030 Agreement, by using panel data and comparing the listed companies with headquarters in European Union countries with companies headquartered elsewhere in Europe. The results show that the 2030 Agreement had no effect on R&D intensity in companies in the electricity sector in the countries of the European Union.
39
Oyekale, Joseph, Mario Petrollese, Vittorio Tola, and Giorgio Cau. "Impacts of Renewable Energy Resources on Effectiveness of Grid-Integrated Systems: Succinct Review of Current Challenges and Potential Solution Strategies." Energies 13, no. 18 (September 16, 2020): 4856. http://dx.doi.org/10.3390/en13184856.
Full textAbstract:
This study is aimed at a succinct review of practical impacts of grid integration of renewable energy systems on effectiveness of power networks, as well as often employed state-of-the-art solution strategies. The renewable energy resources focused on include solar energy, wind energy, biomass energy and geothermal energy, as well as renewable hydrogen/fuel cells, which, although not classified purely as renewable resources, are a famous energy carrier vital for future energy sustainability. Although several world energy outlooks have suggested that the renewable resources available worldwide are sufficient to satisfy global energy needs in multiples of thousands, the different challenges often associated with practical exploitation have made this assertion an illusion to date. Thus, more research efforts are required to synthesize the nature of these challenges as well as viable solution strategies, hence, the need for this review study. First, brief overviews are provided for each of the studied renewable energy sources. Next, challenges and solution strategies associated with each of them at generation phase are discussed, with reference to power grid integration. Thereafter, challenges and common solution strategies at the grid/electrical interface are discussed for each of the renewable resources. Finally, expert opinions are provided, comprising a number of aphorisms deducible from the review study, which reveal knowledge gaps in the field and potential roadmap for future research. In particular, these opinions include the essential roles that renewable hydrogen will play in future energy systems; the need for multi-sectoral coupling, specifically by promoting electric vehicle usage and integration with renewable-based power grids; the need for cheaper energy storage devices, attainable possibly by using abandoned electric vehicle batteries for electrical storage, and by further development of advanced thermal energy storage systems (overviews of state-of-the-art thermal and electrochemical energy storage are also provided); amongst others.
40
Blaszke, Małgorzata, Maciej Nowak, Przemysław Śleszyński, and Bartosz Mickiewicz. "Investments in Renewable Energy Sources in the Concepts of Local Spatial Policy: The Case of Poland." Energies 14, no. 23 (November 25, 2021): 7902. http://dx.doi.org/10.3390/en14237902.
Full textAbstract:
The paper aims to determine the role and formula of investments in renewable energy sources in Poland’s concepts of local spatial policies. It analyses 12,777 planning documents of local spatial policy (these are resolutions adopted by municipalities—in Poland there are two types of these instruments: studies of spatial development conditions and directions and local spatial development plans) in Poland enacted in 2005–2020. On this basis, local concepts were classified and related to the geographical and functional characteristics of municipalities. Poland is an interesting case study in this respect, providing a good reference point for broader international considerations. It was found that only 58.4% of Polish municipalities include renewable energy sources in their spatial policy concept. These are definitely more often urbanised municipalities. The degree of approach to renewable energy sources is also determined by the location of the municipality in the given province. The authors diagnose serious weaknesses in the Polish spatial planning system, consisting in the lack of skilful implementation of renewable energy sources into it. This is one of the reasons for the weaker development of renewable energy sources in the country. The authors consider as an innovative element of the research the analysis of the content of all spatial policy instruments in a given country, from the perspective of renewable energy sources, including proposing a way to verify these instruments.
41
Fuentes-del-Burgo, Joaquín, Elena Navarro-Astor, Nuno M. M. Ramos, and João Poças Martins. "Exploring the Critical Barriers to the Implementation of Renewable Technologies in Existing University Buildings." Sustainability 13, no. 22 (November 16, 2021): 12662. http://dx.doi.org/10.3390/su132212662.
Full textAbstract:
For more than a decade, the European Union has been implementing an ambitious energy policy focused on reducing CO2 emissions, increasing the use of renewable energy and improving energy efficiency. This paper investigates the factors that hinder the application of renewable energy technologies (RETs) in existing university buildings in Spain and Portugal. Following a qualitative methodology, 33 technicians working in the infrastructure management offices of 24 universities have been interviewed. The factors identified have been classified into economic-financial, administrative and legislative barriers, architectural, urban planning, technological, networking, social acceptance, institutional and others. It is concluded that there have not been sufficient economic incentives to carry out RETs projects in this type of building. Conditioning factors can act individually or jointly, generating a greater effect. Most participants consider that there are no social acceptance barriers. Knowledge of these determinants can facilitate actions that help implement this technology on university campuses in both countries.
42
Blumberga, Dagnija. "Mandatory Procurement Lessons. Phenomena of External Initiator Factor." Environmental and Climate Technologies 23, no. 1 (January 1, 2019): 188–213. http://dx.doi.org/10.2478/rtuect-2019-0013.
Full textAbstract:
Abstract Financial support is needed in order to implement renewable resources in countries energy sector in the shortest time period. Among the most important supports for European Union Member states are feed-in tariff and feed-in tariff premiums. This research analyses one country’s experience in applying subsidies of the electricity tariff that has caused public protests after 20 years. There are many reasons for this which are analysed in the paper. One of the most important reasons of high subsidies of energy tariffs – coincident mandatory procurement implementation of application of fossil fuel (imported natural gas) for cogeneration units, which has to be classified as external mover (initiator) factor. Energy sector’s potential development scenarios with or without support for renewable energy resources are being analysed in the paper.
43
Hajdukiewicz, Agnieszka, and Bożena Pera. "International Trade Disputes over Renewable Energy—the Case of the Solar Photovoltaic Sector." Energies 13, no. 2 (January 20, 2020): 500. http://dx.doi.org/10.3390/en13020500.
Full textAbstract:
The development of the renewable energy industry is a priority of economic policies in many countries, since it is viewed as one of the key growth sectors in the economy, playing also a very important role in mitigating climate change. At the international level, renewable energy is an issue of international cooperation but also an area of high trade tensions between countries. The main goal of this paper is to examine the nature and sources of recent trade disputes in the solar photovoltaic sector, which is the most dynamically growing sector in the green energy industry. In particular, the paper explores the links between the contemporary trade disputes and modern protectionism and between protectionist policies and practices and the export competitiveness in the growing sector of the economy. To achieve the aim of the study we explore in detail the WTO trade disputes over photovoltaic (PV) products, which occurred in the years 2007–2018. The products covered by the analysis were solar modules and cells classified under the HS code 854140. In our research we also used measures of descriptive statistics, hierarchical cluster analysis and revealed comparative advantage indexes. Our key results demonstrate the existence of links between protectionist policy causing trade conflicts and the export competitiveness. The research has also allowed us to identify problems of future studies concerning the association between trade protectionism and global value chains in the solar energy sector.
44
Khan, Sahil Ali, and Mohammad Arif Kamal. "Geothermal Energy System for Passive Design in Buildings: Applications and Comparative Analysis." Architecture Engineering and Science 3, no. 2 (April 20, 2022): 84. http://dx.doi.org/10.32629/aes.v3i2.763.
Full textAbstract:
The use of renewable energy is essential for sustainable development, and buildings are responsible for a significant part of energy consumption. Therefore, this study is focused on geothermal energy and its application to buildings and its potential significance for energy savings and minimizing the carbon footprint. In this study, geothermal systems like earth air tunnel systems, geothermal exchange systems, earth sheltering systems have been studied and classified, based on their efficiency in different building typologies and climate, and factors affecting these systems are discussed, and systems selection for different needs and method of installation have been analyzed. Four case studies based on different geothermal systems in different regions and of different building typologies have also been compared to assess the performance and evolution in the field. Sustainable development is not the idea but the need for the future and minimizing the carbon footprint of the building is a step towards it, the use of renewable energy supports that step. Geothermal energy alone can be used for different purposes like electricity generation, passive and active heating, and cooling, also other renewable energies like solar for lighting load, use of biofuels for consumption purposes, will lead to an environment where the carbon footprint of the building can be minimized to zero.
45
Shadman, Milad, Mateo Roldan-Carvajal, Fabian G. Pierart, Pablo Alejandro Haim, Rodrigo Alonso, Corbiniano Silva, Andrés F. Osorio, et al. "A Review of Offshore Renewable Energy in South America: Current Status and Future Perspectives." Sustainability 15, no. 2 (January 16, 2023): 1740. http://dx.doi.org/10.3390/su15021740.
Full textAbstract:
This paper addresses the current status and future research and development perspectives associated with technologies to harness offshore renewable energy, including offshore wind, waves, tides, ocean currents, and thermal and salinity gradient, in South America (SA). It focuses on five countries: Argentina, Brazil, Chile, Colombia and Uruguay. At first, a comprehensive survey presents the number of scientific papers classified based on the resource to show the tendency and importance of such subjects in the academic community. Each country’s electricity matrix and grid connection are shown to understand the region’s renewable source participation situation. The potential of offshore renewable resources is addressed by considering the published technical papers in scientific journals. The main conflicts and synergies associated with ocean space utilization are presented by considering the exclusive economic zone of each country. The status of the regulatory frameworks to promote and development of offshore renewable energies is presented. Two sections are dedicated to presenting the active, decommissioned and planned projects, research groups and laboratory infrastructures to develop the technologies. The last section discusses the future perspectives on the development of this sector in SA. It is observed that SA, with more than 25,000 km of coastline, has a great potential for offshore renewable energy; however, so far, these resources have not been explored commercially. Larger investment in the sector, establishing an adequate legal framework and deploying full-scale demonstration projects at sea are necessary for the commercialization of such technologies in SA.
46
Yimen, Nasser, Oumarou Hamandjoda, Lucien Meva’a, Benoit Ndzana, and Jean Nganhou. "Analyzing of a Photovoltaic/Wind/Biogas/Pumped-Hydro Off-Grid Hybrid System for Rural Electrification in Sub-Saharan Africa—Case study of Djoundé in Northern Cameroon." Energies 11, no. 10 (October 3, 2018): 2644. http://dx.doi.org/10.3390/en11102644.
Full textAbstract:
Traditional electrification methods, including grid extension and stand-alone diesel generators, have shown limitations to sustainability in the face of rural electrification challenges in sub-Saharan Africa (SSA), where electrification rates remain the lowest in the world. This study aims at performing a techno-economic analysis and optimization of a pumped-hydro energy storage based 100%-renewable off-grid hybrid energy system for the electrification of Djoundé, which is a small village in northern Cameroon. Hybrid Optimization of Multiple Energy Resources (HOMER) software was used as an analysis tool, and the resulting optimal system architecture included an 81.8 kW PV array and a 15 kW biogas generator, with a cost of energy (COE) and total net present cost (NPC) of €0.256/kWh and €370,426, respectively. The system showed promise given the upcoming decrease in installation cost of photovoltaic systems. It will be viable in parts of SSA region but, significant investment subsidies will be needed elsewhere. The originality of this study can be emphasized in three points: (1) the modelling with the recently introduced pumped-hydro component of HOMER; (2) broadening sensitivity analysis applications to address practical issues related to hybrid renewable energy systems (HRES); and, (3) consideration of the agricultural sector and seasonal variation in the assessment of the electricity demand in an area of SSA.
47
Zhao, Jijun, Siyuan Gao, Danping Ren, Zhihua Li, and Liang Xue. "A multi-period joint energy scheduling algorithm in smart home based on prediction of the residents energy consumption." World Journal of Engineering 12, no. 2 (April 1, 2015): 135–48. http://dx.doi.org/10.1260/1708-5284.12.2.135.
Full textAbstract:
In this paper, considering a tradeoff between consumers comfort and energy efficiency, a multi-period joint energy scheduling algorithm (MPJ-ESA) based on prediction of residents energy consumption is proposed, which includes long-period preliminary sch eduling, short-period preliminary scheduling, and real-time fine-tuning scheduling. First, by analyzing historical data of energy consumption, preferred usage profile of consumers is inferred, and the dynamic comfort level is presented. Then the paper uses the wavelet neural networks (WNNs) prediction algorithm to predict the operation of the appliances which are classified into appliances with unschedulable mode and schedulable mode. Based on the energy consumption prediction and dynamic comfort level, home appliances running state are scheduled according to the prediction of renewable energy available amount and real-time pricing (RTP). The simulation results show that scheduling algorithm effectively improves the energy efficiency and enhances user satisfaction with the operation of scheduled appliances and let the consumers comfort and energy efficiency achieve a better tradeoff.
48
Al-Mezeini, Nawal Khamis, Abdulrahim M. Al-Ismaili, and Said M. Tabook. "Evaluation of Greenhouse Cucumber Production Sustainability in Terms of Energy Use Efficiency." Journal of Agricultural and Marine Sciences [JAMS] 24 (February 10, 2020): 24. http://dx.doi.org/10.24200/jams.vol24iss0pp24-29.
Full textAbstract:
Sustainable agricultural production could be assessed through energy-use efficiency (EUE). Thus, this paper aims to evaluate the EUE for cucumber greenhouse production in Oman. Data were obtained by interviewing farmers (face-to-face). Result indicated that total energy inputs (e.g. electricity, water, fertilizers and agrochemicals) and total energy output (cucumber yield) were 1159726.0 MJ ha-1 and 89942.9 MJ ha-1, respectively. The highest energy consuming input in the greenhouse production was electricity, consuming 88% of total energy input. This indicates that electricity had again the highest impact in cucumber greenhouse production and 99% of electricity goes for cooling the greenhouse. When all energy inputs were classified into its forms; direct (D) and indirect (ID), and renewable (R) and non-renewable (NR), the highest portion of total energy forms in greenhouse cucumber production was for D and NR energy. The EUE and energy productivity (EP) were found to be 0.07 and 0.10 kg MJ-1, respectively. Energy use in greenhouse cucumber production was inefficient and solar energy need to be implemented to improve cucumber greenhouse sustainability production.
49
Li, Tian Ran, Yun Hu Luo, and Lin Sun. "Risk Management of Virtual Power Plant Reserve Allocation." Applied Mechanics and Materials 448-453 (October 2013): 2695–98. http://dx.doi.org/10.4028/www.scientific.net/amm.448-453.2695.
Full textAbstract:
Virtual Power Plant (VPP) is a new entity in power systems that manages a set of various distributed energy resources (DERs). One of the functions of VPP is to determine the allocation of reserve to solve the problem of renewable generation uncertainty. In this paper, the reserve resources of VPP are classified into non-renewable distributed generation (NRDG), energy storage device (ESD), interruptible load (IL) and reserve bought from the market (RBFM). Their complementary properties should be utilized to improve the economy of reserve allocation. An optimal coordination model for risk management of NRDG configuration of VPP reserve allocation is proposed. Simulation results are presented to validate that an optimal value of NRDG configuration should exist.
50
Rocha, Christian M. Moreno, Jorge D. Melo Boiler, Samira M. Muñoz Pizarro, Leidy M. Mora Higuera, and William R. Insignares Conde. "Evolution, Challenges, and Perspective in the Implementation of Projects with Renewable Energy Sources: Colombia Case." International Journal of Energy Economics and Policy 12, no. 6 (November 28, 2022): 230–36. http://dx.doi.org/10.32479/ijeep.13460.
Full textAbstract:
This work quantifies the evolution in the implementation and development of renewable energies in Colombia, as well as evidence the current challenges and development prospects. The high demand for electricity in Colombia is increasing due to the great increase in population, industry and commerce, which generates greater energy consumption and as a consequence economic, social and environmental problems. The objective of this study was to analyze the behavior of the energy projects submitted to the Mining Energy Planning Group (UPME) during the last 15 years until July 2022, as well as to study the research areas with the highest performance. technology and the corresponding radiation intensity. In addition, it shows an historic information about the projects presented both not in force as of the date of closing of this investigation, classified according to their source, according to their range of power and according to its stage of implementation, finally, we made a synthesis of the new regulations governing the motivation and implementation of projects with renewable energy sources, being as this work a very good source of reference for further studies of the implementation of renewable energy sources in Colombia.