Journal articles: 'Transport energy efficiency'

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Moriarty, Patrick, and Damon Honnery. "Energy efficiency: Lessons from transport." Energy Policy 46 (July 2012): 1–3. http://dx.doi.org/10.1016/j.enpol.2012.04.056.

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Mateichyk, Vasyl, Miroslaw Śmieszek, and Nataliia Kostian. "Evaluation of transport system configuration by efficiency indicators." Transport technologies 2022, no. 2 (December 10, 2022): 52–62. http://dx.doi.org/10.23939/tt2022.02.052.

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The study is devoted to the process of evaluating the efficiency of the transport system in terms of urban mobility. The approach is based on the use of a system of performance indicators using neurocomputer technologies. Generalized models for obtaining a vector of performance indicators and an integral performance indicator in the form of computer neural networks are proposed. It is shown that to record the fact that the indicator values fall to the threshold and below, it is enough to use a neural network built on perceptron neurons. The multi-layered model for determining the integral indicator allows assessing the importance of individual indicators in the system of monitoring the efficiency of a given configuration of the transport system. An experimental study of twenty-five states of the transport system of various configurations in the cities of Poland and Ukraine was carried out. The key indicators of the system's efficiency are determined, namely, the energy efficiency indicator of the vehicle as a system element, the environmental indicator and the traffic safety indicator. Based on the results of the experimental study, a neural network structure is proposed for evaluating the energy efficiency of given configurations of the transport system. For the purpose of training and testing the obtained network, the procedure of adjusting the threshold value of the activation function and normalizing the values of the input parameters array of the transport system was used. The constructed network was implemented using Visual Studio 2019 using the C++ language. The network was adjusted to determine the energy efficiency estimate with a given accuracy by replacing the perceptron neuron with a regular one with a sigmoidal activation function. The random nature of the choice of the configuration and the initial values of the weighting factors made it possible to obtain a model with an accuracy of implementation on the control sample in the range from 90 to 98.7% at a learning rate of 0.1.

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Lebedevas, Sergejus, Nadežda Lazareva, Paulius Rapalis, Vygintas Daukšys, and Tomas Čepaitis. "INFLUENCE OF MARINE FUEL PROPERTIES ON IGNITION, INJECTION DELAY AND ENERGY EFFICIENCY." Transport 36, no. 4 (December 2, 2021): 339–53. http://dx.doi.org/10.3846/transport.2021.15952.

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According to the International Council on Combustion Engines (CIMAC) and International Maritime Organization (IMO) statistics, the rational selection of Marine Bunker Fuel (MBF) properties is an effective way to improve operating conditions and energy efficiency of all types of marine Diesel Engines (DEs). The publication presents the results of studies on the influence of heavy and distillate MBF properties on the characteristics of different DE types: high-speed (Caterpillar 3512B, MTU 8V 396TB), medium-speed (SKL VDS 48/42, ChN 26.5/31) ir low-speed (MAN B&W 6S60MC). The aim of work is to form a methodological framework for assessing the influence of marine fuel properties on the energy performance of different types of ship power plants. Numerical methods show that in the case of unfavourable selection of the density and viscosity of marine fuels regulated by the standard ISO 8217:2017, the changes in specific fuel consumption be reach up to 10% low-speed, 4…7% medium-speed, and 2…3% high-speed DEs. As the density varies from light grades to 1010 kg/m3, the change in be is 3…4%. At low viscosity, as the density increases to 1030 kg/m3, the low-speed engine comparative fuel consumption increases by 5%. It is recommended not to use fuel with a density >1010 kg/m3 and a viscosity <300…400 mm2/s. Developed solutions for the rational selection of bunkered marine fuel properties for a specific DE model trough the influence of density and viscosity on fuel injection and combustion characteristics based on multiparametric diagrams of relative fuel consumption change.

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Narinbaevna, Irisbekova Mavluda, and Alimova Zebo Khamidullayevna. "INDICATORS FOR ASSESSING THE EFFICIENCY OF FUEL USE IN ROAD TRANSPORT." European International Journal of Multidisciplinary Research and Management Studies 02, no. 06 (June 1, 2022): 13–18. http://dx.doi.org/10.55640/eijmrms-02-06-03.

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This article discusses the evaluation of fuel efficiency indicators in road transport. At the same time, the main criterion for evaluating the efficiency of the use of automotive fuel is the specific fuel consumption in grams per unit of transport work. The energy intensity is calculated by dividing the total amount of energy consumed by the fuel by the transport work performed at the same time.

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Lipscy, Phillip Y., and Lee Schipper. "Energy efficiency in the Japanese transport sector." Energy Policy 56 (May 2013): 248–58. http://dx.doi.org/10.1016/j.enpol.2012.12.045.

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Al-Mofleh, Anwar, Soib Taib, and Wael A. Salah. "MALAYSIAN ENERGY DEMAND AND EMISSIONS FROM THE TRANSPORTATION SECTOR." TRANSPORT 25, no. 4 (December 31, 2010): 448–53. http://dx.doi.org/10.3846/transport.2010.55.

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Road transport represents one of the greatest areas of challenge for energy efficiency. A growing percentage of petrol usage is due to consumption in the transportation sector. However, in other sectors, petrol has been recently partially or totally substituted by other fuels. The need for worldwide action to achieve energy efficiency in the transportation sector has been recognized by the agencies of the United Nations and other international governmental and non‐governmental organizations. Transportation is one of the key factors for the growth and development of Malaysian economy. Currently, more than 80% of primary energy consumption based on fossil fuels and demand stays high and is supposed continually grow in the future. Even if technology developments eventually able to reduce specific consumption, world energy demand is likely to increase in line with its population. This sector also accounts for a substantial amount of air pollution in cities and contributes significantly to greenhouse gas emissions. This paper aims to analyze factors influencing the pattern and emission level of energy consumption in the transportation sector of Malaysia and extrapolates the total energy demand and vehicular emissions.

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Usón, Alfonso Aranda, Antonio Valero Capilla, Ignacio Zabalza Bribián, Sabina Scarpellini, and Eva Llera Sastresa. "Energy efficiency in transport and mobility from an eco-efficiency viewpoint." Energy 36, no. 4 (April 2011): 1916–23. http://dx.doi.org/10.1016/j.energy.2010.05.002.

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Popov, S. P., and O. A. Baldynov. "Evaluation of energy efficiency of the long distance energy transport systems for renewable energy." E3S Web of Conferences 114 (2019): 02003. http://dx.doi.org/10.1051/e3sconf/201911402003.

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This article describes the systems of long-distance transport of energy from renewable energy sources. A comparative analysis of the energy efficiency of energy complexes in the transport of energy analysis is performed carriers such as electricity and hydrogen in a liquefied and chemically bound state.

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Bora, Gyula, and B. Forman. "Transport, energy efficiency and environmental issues in Hungary." International Journal of Environmental Technology and Management 1, no. 3 (2001): 246. http://dx.doi.org/10.1504/ijetm.2001.000753.

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Petrovic, Dr Stojan, Dr Velimir Patrovic, and Dr Vladimir Pajkovic. "Transport Energy Efficiency: Case of Serbia – A Review." IOSR Journal of Mechanical and Civil Engineering 14, no. 02 (April 2017): 32–39. http://dx.doi.org/10.9790/1684-1402063239.

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TAKAHASHI, Kazuo. "Development of High Efficiency Thermal Energy Transport System." Journal of the Society of Mechanical Engineers 112, no. 1087 (2009): 466–67. http://dx.doi.org/10.1299/jsmemag.112.1087_466.

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Xiang, Zixia, Yanhong Yin, and Yuanwen He. "A Microeconomic Methodology to Evaluate Energy Efficiency by Consumption Behaviors and Strategies to Improve Energy Efficiency." Sustainability 10, no. 11 (November 21, 2018): 4327. http://dx.doi.org/10.3390/su10114327.

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The present paper highlights a quantitative method to maximize energy efficiency based on the minimum energy consumption and maximum quality of life from consumption behaviors. Quality of life is expressed by utility, which is a Constant Elasticity of Substitution (CES) function of demands for composite goods, car trips and public transport trips. Individual energy consumption is estimated by the demand of goods and we applied this method to Nagasaki to evaluate energy efficiency. Our results showed that 28,154 kcal of energy is needed to support the life of one individual per day in Nagasaki. Furthermore, we found that 76% of energy was used for composite goods and 24% was used for mobility goods. To achieve maximum energy efficiency, our results highlight that energy should be reduced by increasing the consumption of composite goods and public transport trips, while simultaneously decreasing the consumption of car trips. Compared to residents in urban and suburban areas, individuals in Central Business Districts (CBD) were found to have higher energy efficiency. Findings in Nagasaki suggest three policy implications: First, eco-energy consumption patterns should be encouraged to decrease energy use, while maintaining quality of life. Second, mixed land use is attributed to increased energy efficiency. Lastly, the energy efficiency of mobility could be improved though increasing the attraction of public transport.

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Molocchi, Andrea. "Electric cars or high-efficiency transport networks?" ECONOMICS AND POLICY OF ENERGY AND THE ENVIRONMENT, no. 1 (July 2010): 13–29. http://dx.doi.org/10.3280/efe2010-001002.

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The main drivers of the electric cars diffusion which is projected in the next decade are to be seen in the industry effort to create new spaces in mature car markets (supply side), and in demand side effects of current climate mitigation policies in the transport sector, focused on CO2 emissions and energy efficiency of new vehicles sold. Indeed the energy performances of electric vehicles are projected to be highly variable; the final results of fleet average comparisons with internal combustion engines vehicles will be affected by at least: a) the real energy efficiency of the EV models (in particu- lar by their weight), b) the battery efficiency rate; c) the average energy losses of the national grids, and d) the national thermoelectric generation efficiency. For example, if sensitivity analysis on Germany or USA power plants efficiencies is undergone, EV primary energy consumptions result to be respectively +8% and +30% higher than conventional ICE cars. Moreover, EV credentials in terms of transport external costs reduction are very poor, particularly for congestion. If we look at research results comparing the external costs of different transport modes, high net benefits may be alternatively seen in public transport and rail based mobility (and also in short sea shipping for certain freight transport types) either in terms of energy efficiency and external costs reduction. An EU27 wide transport indicator based analysis is provided in chapter 4 to better highlight this "structural" additional driver of transport external costs, which has strictly little to do with vehicle level efficiency, rather it represents an efficiency in urban planning and infrastructural planning: a "system" efficiency in providing availability and access to highly energy efficient transport modes and services. In the final chapter recommendations for transport and energy European policies are provided, starting from a target setting based on external costs indicators (capturing also and not exclusively the energy efficiency and savings potential offered by transport infrastructures and vehicles), followed by an urgently needed Long term Action plan for railways networks and intermodality development. As to EVs, it is recommended to regulate them under an extension of the current EU CO2/km average target approach, by setting a common (final) energy consumption efficiency standard for all car innovations. Public funds collected from external costs road charging may be better concentrated by EU and Member States on this infrastructural Action Plan rather than on urban electricity grids for EVs.

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Viktorelius, Martin, and Monica Lundh. "Energy efficiency at sea: An activity theoretical perspective on operational energy efficiency in maritime transport." Energy Research & Social Science 52 (June 2019): 1–9. http://dx.doi.org/10.1016/j.erss.2019.01.021.

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Radosavljevic, Dusan, Aleksandar Manojlovic, Olivera Medar, and Nebojsa Bojovic. "Vehicle fleet energy efficiency: Influence on overall vehicle effectiveness." Thermal Science 22, no. 3 (2018): 1537–48. http://dx.doi.org/10.2298/tsci170926074r.

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This paper presents the research on vehicle fleet energy efficiency impact upon overall vehicle effectiveness. Transport companies and companies with own vehicle fleets tend to enhance their resource effectiveness, and to increase their transport service quality with the objective of attaining a competitive position on the market. Since energy consumed for transport operations is an important transport process resource, a method for assessing transport process effectiveness has been developed with the objective of increasing vehicle fleet effectiveness and its energy efficiency, and the overall vehicle effectiveness human indicator has been defined accordingly. The developed method was then implemented in an actual vehicle fleet and variations of the overall vehicle effectiveness human indicator were researched, as well as specific energy consumptions for respective net transport volumes depending on the following indicators: vehicle payload capacity utilization rate and mileage utilization rate. It is shown that specific energy consumption influences overall vehicle effectiveness depending on both the payload capacity utilization rate and mileage utilization rate.

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Cieślicki, Rafał, and Mykola Karpenko. "AN INVESTIGATION OF THE IMPACT OF PUMP DEFORMATIONS ON CIRCUMFERENTIAL GAP HEIGHT AS A FACTOR INFLUENCING VOLUMETRIC EFFICIENCY OF EXTERNAL GEAR PUMPS." Transport 37, no. 6 (December 22, 2022): 373–82. http://dx.doi.org/10.3846/transport.2022.18331.

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Gear pumps are widely used in transport machines not only in hydraulic drive systems, but also in lubrication and fuel systems. A positive displacement pump converts mechanical energy into pressure energy stored in the liquid, which it transports to the hydraulic cylinder or motor. The efficiency of this process depends on the efficiency of the system components, including the efficiency of the pump, which depends on the amount of internal leakage through the gaps between the high and low pressure sides. The larger the gaps, the lower the volumetric efficiency. This article presents an investigations of impact of pump deformations on circumferential gap height. The article presents a three-dimensional model of an external gear pump using Finite Element Method (FEM) during operating conditions. The model reflects pumping operation at discharge pressures up to 32 MPa and it was validated against strain measurements of pump casing. The simulation results indicate that the pump casing becomes deformed due to pressure, causing a significant increase in the height of the circumferential gap. The increase of the discharge pressure from 8 to 32 MPa causes more than twofold local increase in the height of the circumferential gap. The obtained results indicate that for the correct modelling of the flow generated by gear pumps, it is necessary to consider the change in the size of the gaps resulting from the deformation of the pump.

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Shabanov, A. V., V. K. Vanin, and A. E. Yesakov. "Energy saving technologies and energy efficiency of motor transport power plants." Izvestiya MGTU MAMI 15, no. 4 (December 15, 2021): 83–91. http://dx.doi.org/10.31992/2074-0530-2021-50-4-83-91.

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The perspective energy sources alternative to hydrocarbons, which are currently used in the world, are considered. Energy-saving technologies for the use of hydrocarbon fuel in vehicles are analyzed. The need to develop the use of electric drives on automobiles is noted. The importance of systematical accumulation and analyzing of the existing experience of operating vehicles with electric drives abroad and in the Russian Federation is considered. Monitoring the technologies developed abroad and the problems arising during the operation of electric vehicles will make it possible to determine the priority ways of their development and to concentrate the efforts of researchers in the direction ensuring the maximum efficiency of their application. One of the currently attractive and economically viable ways of developing road transport for domestic practice is the use of vehicles with hybrid power plants. It is shown that the production of hybrid vehicles and electric vehicles abroad is successfully developing and is nowadays one of the most dynamic in the world. Indicators of efficiency of electric power consumption of vehicles with electric drive of various automobile manufacturers are given. A comparative analysis of technologies for the use of electric automobiles to improve the environmental situation in megalopolises is carried out and the problems of increasing the efficiency of automobile power plants are considered. It is shown that the climatic conditions of the Russian Federation with long periods of low temperatures of atmospheric air strongly affect the energy losses associated with heating the passenger compartment, and to a large extent - on the energy efficiency of the power plant of electric vehicles. To assess the efficiency of using electric vehicles, it is proposed to use a universal indicator of the efficiency of energy consumption. It is proposed to carry out a comparative assessment of the energy consumption of various vehicles by the energy parameter qEL. The calculated data show that the use of vehicles with electric drive and, in particular, rechargeable hybrids is more profitable in comparison with the use of vehicles equipped exclusively with internal combustion engines.

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Gamayunova, Olga, and Roman Golov. "Potential of energy saving on transport." E3S Web of Conferences 135 (2019): 02025. http://dx.doi.org/10.1051/e3sconf/201913502025.

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The transport system of the Russian Federation includes not only railway, automobile, air, sea and river transport, but also main gas and oil pipelines. Given the volume and variety of modes of transport, the introduction of measures to improve energy efficiency in the transport sector will save significant amounts of fuel and energy resources. In the light of the annual increase in energy consumption, the degree of negative impact on the environment and the amount of emissions of harmful substances, energy saving issues in transport make this issue even more important. The article describes the dynamics of the Russian car market for the previous year, shows the key ways to improve energy efficiency and energy saving in road transport.

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Lin, Zhiwei, Nan Zhang, Janarthanan Jayawickramarajah, and Igor V. Rubtsov. "Ballistic energy transport along PEG chains: distance dependence of the transport efficiency." Physical Chemistry Chemical Physics 14, no. 30 (2012): 10445. http://dx.doi.org/10.1039/c2cp40187h.

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Skrúcaný, Tomáš, Saša Milojević, Štefánia Semanová, Tomáš Čechovič, Tomasz Figlus, and František Synák. "The Energy Efficiency of Electric Energy as a Traction Used in Transport." Transport technic and technology 14, no. 2 (December 1, 2018): 9–14. http://dx.doi.org/10.2478/ttt-2018-0005.

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Abstract The article deals with the problem of electric power production in terms of environmental impact, in particular the energy efficiency of its production to utilize primary sources. The efficiency of its production directly depends on the composition of primary sources and technologies used. Difference in efficiency by converting various forms of energy into electrical power and their ratio in the use directly affect the resulting efficiency, production of emissions and thus the environmental impact. Electric traction, its production, is burdened less efficient than other types of tractions used in transport, but at the final reconciliation of their consumption in vehicles, this difference decreases or delays because the vehicles themselves work with different conversion efficiency of its traction on mechanical work, vehicle driving.

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Milewski, Dariusz, and Beata Milewska. "Efficiency of the Consumption of Energy in the Road Transport of Goods in the Context of the Energy Crisis." Energies 16, no. 3 (January 24, 2023): 1257. http://dx.doi.org/10.3390/en16031257.

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Transport costs are strongly influenced by fuel prices and fuel consumption in transport, i.e., energy efficiency. The aim of the article is to present the problem of energy efficiency in freight transport with the use of Heavy Duty Vehicles (HDV). The authors presented the factors of energy efficiency in road transport, energy efficiency of the road vehicles, the share of fuel costs in the total costs of transport companies and the relationship between the increase in fuel prices and the increase in transport rates. Research methods include, apart from literature analysis, interviews conducted in Polish transport companies in 2022 and the analysis of data collected by the authors on the transport services market over the last 20 years. The increase in rates over the last 20 years, until 2021, largely coincided with the increase in fuel prices, while in 2022, for the first time in this period, the increase in fuel prices was greater than the increase in rates. However, the prices for transport services increased with the increase in energy consumption costs, not with changes in fuel prices. The cost of energy consumption depends on the efficiency of its use, which is constantly increasing, although to a small extent. Research shows that the efficiency of fuel consumption in high-tonnage transport changes at a rate of 0.8–1% per year while the proportion of fuel costs in Polish transport companies transporting goods by road in the last 20 years oscillates between 29% and 46%. There was also an increase in the freight rates on this market, in most cases by over 30%. Despite this, however, the profitability of some companies deteriorated. A large increase in transport rates, compensating for the increase in fuel prices, applies mainly to transport companies whose strategy is to compete with the quality of services, and when high-value loads are transported, while a small increase in transport rates, which does not compensate for the increase in fuel prices, applies mainly to companies whose strategy is to compete on the price of transport services and when low-value cargo is being transported. The results of research on the market in Poland conducted by the authors of the article agrees with the results and opinions of other authors and researchers from other countries. The authors also agree with the view that the possibilities of increasing the efficiency of energy consumption in road transport by the carriers themselves are limited. The road transport market, especially in Poland, is highly competitive, which results in high efficiency of transport processes. However, this efficiency is largely affected by factors beyond the control of these companies (technological factors, infrastructure and energy sources). It seems that the involvement of the state is necessary. The research carried out by the authors of the article also confirmed the existing relationships between the weight of the transported cargo and energy consumption identified by other authors.

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Stachura, Paulina. "Measuring energy efficiency - structural and index decomposition analysis." Central European Review of Economics and Management 2, no. 4 (December 22, 2018): 71. http://dx.doi.org/10.29015/cerem.584.

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Aim: The aim is to recognize the main determinants of the energy efficiency improvement in transport in Poland in the years 2000-2014 using structural and index decomposition analysis, and to identify areas where there is still potential for further reduction of energy consumption.Design / Research methods: Techniques used to analyse changes in energy use are: structural decomposition analysis and index decomposition analysis. Each of these two methods is characterized by distinctive, unique techniques and approaches, as they have developed quite independently. Index decomposition analysis measures the impact of energy efficiency gains on the level of energy consumption, at the most detailed sector disaggregation level allowed by the available data. Whereas structural decomposition analysis allows to analyse the impact of the external factors, such as technological, demand, and demographic effects, on the fluctuations of the total energy consumption. The similarities and differences between the two approaches are summarized and illustrated with a numerical example of Polish transport.Conclusions / findings: The article recognizes the main determinants of the energy efficiency improvement in transport sector in Poland in the years 2000-2014. In case of Poland ODEX shows an overall progress of energy efficiency in transport by 24.3%. Results obtained with decomposition analysis indicate large divergences in energy efficiency improvements between modes of transport and vehicle types and identify areas where there is still potential for further reduction of energy consumption. Results from decomposing structure of energy use, show activity effect to be main reason for energy use growth. The distribution of each mode in total traffic of passengers and goods changes toward less energy efficient modes. The only factor driving down the energy use is energy savings.Originality / value of the article: Using two methods of decomposition analysis and comparing obtained outcomes allows to get a broader view on energy use trends. Results presented in this article are a good starting point for further detailed analysis of changes in energy use of transport.

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Izvarin, Mihail, Marina Evstaf'eva, Daniil Talyukin, and Viktoriya Pavlova. "Comparison of Transportation Energy Efficiency on the World Railways." Proceedings of Petersburg Transport University 19, no. 3 (September 25, 2022): 537–49. http://dx.doi.org/10.20295/1815-588x-2022-3-537-549.

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Purpose: To conduct analytical comparison of energy efficiency (specific volumetric capacity) of transportation by rail, to analyze passenger and freight turnover dynamics by years, to calculate relative error in the consumption of fuel and energy resources by rail transport, also to study the statistics of fuel and energy resources consumption for to carry out this work by the countries: Russian Federation and United States of America. To conduct analytical study of discrepancy and statistical error between the data of the world and Rosstat national statistics. To show the relation between energy efficiency of rail transportations and CO2 emission level. To study the trend of changes in annual specific volumetric capacity and to suggest possible reasons for dynamics presence. Methods: Analytical work with statistical data from international and domestic digests in annual dynamics by picked countries; comparison and conclusions based on considered data. Results: Comparative analysis of change dynamics for passenger and freight turnover annually was carried out, statistical deviation dynamics for fuel and energy resources consumption data was calculated, fuel main types consumption by rail transport was considered, energy consumption efficiency by this type of transport was calculated and energy volumetric capacity for rail transport of leading countries of the world was analyzed. Practical significance: Environmental pollution problem plays a significant role in the world at the moment. Railway transport, which plays an important economic role in every country, is a major energy consumer. Equally to other energy consumers, on rail transport, it’s constantly held the analysis of fuel usage efficiency and of CO2 emission volumes. Comparative analysis of changes in specific energy volumetric capacity annually with hypothetical conclusions on reasons, leading to given dynamics, will make it possible to predict and provide for a timely response on the basis of first prerequisites of economic and general political changes. Analysis of energy efficiency of a railway transport will demonstrate the state of Russian railways in a dynamic comparison with Western countries and will allow to analyze positive experience of the industry development in other countries with the possibility of application in our country.

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Sablin, Oleg, Dmytro Bosyi, Valeriy Kuznetsov, Konrad Lewczuk, Ivan Kebal, and Sergiy S. Myamlin. "Efficiency of energy storage control in the electric transport systems." Archives of Transport 62, no. 2 (June 30, 2022): 105–22. http://dx.doi.org/10.5604/01.3001.0015.9569.

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The problems of storage and supplying the energy, together with reducing energy intensity for transport, are now crucial for developing sustainable and reliable transport systems. The energy network must be gradually adapted to new loads and power consumption patterns, especially in railways. The article aims to develop the simulation model to investigate the energy storage systems in its use in the electric transport infrastructure. The authors review selected technical solutions for electric energy storage in transport. The theoretical aspects of energy exchange in the energy storage systems were presented as a base for a continuous simulation model of electric transport power supply. In the non-periodic random voltage input applied to the storage unit, it is pro-posed to use the calculation method based on the Duamel integral to analyze its charge-discharge processes. The resistance functions were applied to analyze the traction power supply mode with variable in time and space by active loads. The simulation showed that the direct connection of the unit to the traction network significantly reduces the traction energy consumption.

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Stala-Szlugaj, Katarzyna, and Zbigniew Grudzinski. "Energy efficiency and steam coal transport over long distances." E3S Web of Conferences 10 (2016): 00089. http://dx.doi.org/10.1051/e3sconf/20161000089.

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Ribeiro, Suzana, and A. Abreu. "Energy efficiency in transport sector for mitigating climate change." IOP Conference Series: Earth and Environmental Science 6, no. 20 (February 1, 2009): 202009. http://dx.doi.org/10.1088/1755-1307/6/20/202009.

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Corral, Alvaro, Francisco Izurieta, Veronica Guayanlema, Juan Pablo Díaz, Henry Acurio, and Paola Quintana. "Assessment opportunities for energy efficiency in Ecuadorian road transport." DYNA 84, no. 200 (January 1, 2017): 309–15. http://dx.doi.org/10.15446/dyna.v84n200.52495.

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El transporte es vital para el desarrollo social y económico de las sociedades alrededor del mundo. Por lo tanto, se tiene que considerar que el transporte masivo ha incrementado a través del tiempo con el consumo discriminado de combustibles fósiles que han servido para suplir la demanda en el transporte. Existen impactos sociales y medio ambientales que tienen que ser evaluados junto con la demanda de energía en Ecuador. La misma que en 2012 equivalió a 46 millones de BEP, donde 73% fue consumida por vehículos de carga pesada y 32% por vehículos de carga liviana. Este patrón de consumo combinado con una flota de vehículos ineficiente y un subsidio discriminado resulto en un derroche excesivo de energía. La investigación se enfoca en el análisis de la situación del transporte en Ecuador, para identificar el desperdicio de energía, el medio ambiente, y las oportunidades de eficiencia energética en este sector.

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Zachariadis, Theodoros, and Zissis Samaras. "Validation of road transport statistics through energy efficiency calculations." Energy 26, no. 5 (May 2001): 467–91. http://dx.doi.org/10.1016/s0360-5442(01)00012-3.

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Verstraete, D. "On the energy efficiency of hydrogen-fuelled transport aircraft." International Journal of Hydrogen Energy 40, no. 23 (June 2015): 7388–94. http://dx.doi.org/10.1016/j.ijhydene.2015.04.055.

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Orasch, Wolfgang, and Franz Wirl. "Technological efficiency and the demand for energy (road transport)." Energy Policy 25, no. 14-15 (December 1997): 1129–36. http://dx.doi.org/10.1016/s0301-4215(97)00105-5.

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Schatten, Kenneth H. "The efficiency of convective energy transport in the sun." Astrophysical Journal 329 (June 1988): 1028. http://dx.doi.org/10.1086/166447.

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Barić, Mate, Josip Orlović, Leonardo Šango, and Mateo Pedišić. "Energy Efficiency of Container Cargo Flow in Largest East Adriatic Ports." Journal of Maritime & Transportation Science 61, no. 1 (December 2021): 35–43. http://dx.doi.org/10.18048/2021.61.03.

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Modern cargo flow nowadays requires proper analysis in order to optimize the costs and environment impact. To properly assess the ports at eastern Adriatic region transport energy efficiency and emissions were analysed, including both sea and land transport. For the sea transport Otrant gate was chosen as an entry point in Adriatic Sea. The analysed ports are Trieste, Koper and Rijeka as well-established container terminals and ports of Zadar and Ploče as terminals which in future may provide significant service. For the land transport, using both truck and train, Budapest was chosen as a final destination due to its location further in land at similar distance from all selected ports. As a cargo unit one 10 tonne TEU unit was used. The purpose of this analysis was to determine required energy to transport that one unit and emissions which such transport produce, not a volume or speed of transport. All the calculations were made using EcoTransIT calculator. The results showed that north Adriatic ports have one of the best positions in terms of efficiency of land transport, however southern Croatian ports have to develop transport infrastructure, mainly railroad, to be considered as a notable stakeholder.

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Monastyrskyi, Grygorii, and Olena Borysiak. "Ecological and energy efficiency approaches to providing innovative development of municipal transport logistics." Herald of Ternopil National Economic University, no. 4(94) (December 3, 2019): 7–18. http://dx.doi.org/10.35774/visnyk2019.04.007.

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Introduction. Climate change, limitation of natural energy resources indicate the increasing role of ecological and energy security. The actual issue is the usage of ecological types of transport, improving the municipal transport management system. According to this, the article is devoted to research of innovative directions of development of municipal transport logistics based on sustainable development principles. Methods. The methodological basis of the research is the general scientific and economic-statistical methods: analysis, synthesis, statistical method – to investigate the international experience of reforming the transport system; inductions and deductions – to determine directions of development of municipal transport logistics of Ukraine; abstract-logical, economic-mathematical programming – to evaluate the conditions of the using ecological and energy efficient approaches to providing innovative development of the transport system in cities. Results. The article investigates the international experience of reforming the transport system on the basis of municipal ecology and development of «smart» cities. In the context of the using ecological and energy efficient approaches to reforming municipal transport logistics, public transport, the topical issue is the development of algorithms for implementing the Internet of things and artificial intelligence into the transport system. The priority directions of innovative development of municipal transport logistics in Ukraine are the digitization of processes of traffic management, diversification of ecological and energy efficient types of transport, forming partnerships between energy service companies and transport service providers. The article evaluates the conditions of the using ecological and energy efficient approaches to providing innovative development of the transport system in cities. This process is aimed at optimization of the usage of ecological types of transport, highlighting common priorities of the transport logistics development. The modeling of relationship between the usage of ecological types of transport and the level of emissions of harmful substances into the atmosphere is considered. For the purpose of innovative development of municipal transport logistics on the principles of municipal ecology and energy efficiency, the improvement of bicycle infrastructure in cities, the development of partnerships between energy service companies and public transport service providers are proposed. Discussion. The prospect of further research is to develop a model for optimizing the management of ecological and energy efficient transport in cities, developing partnerships between energy service companies and public transport service providers.

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Watson, Inara, Amer Ali, and Ali Bayyati. "Energy Efficiency of High-Speed Railways n." Advances in Environmental and Engineering Research 03, no. 04 (December 26, 2022): 1–22. http://dx.doi.org/10.21926/aeer.2204055.

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The world is becoming more dependent on energy resources, which translates into political dependency on energy-exported states. This will significantly impact the economy, transport, and the environment around the world. Railway transport is becoming an essential mode of transportation because it can operate on an electrified network and has zero carbon emissions. High-Speed Railways (HSR) is an energy-intensive transport system, and it is important economically and environmentally to reduce the amount of used energy. This study examined high-speed rail from an energy efficiency point of view and found factors that can significantly reduce the energy consumption of high-speed rail. This research aims to answer the question that motivated this research: what fundamental factors affect the energy consumption of the selected HSR systems? It estimated the dynamic changes in the total energy consumption for seven HSR systems from 2010-2017 and benchmarked the most energy efficient HSR systems. The non-radial Data Envelopment Analyses methodology has been used to fulfil this research. To conduct complex statistical analyses, IBM SPSS has been applied. The main findings have shown that the decrease in vehicle mass, improved design of high-speed rolling stock and increased occupancy of trains will support the reduction of energy consumption by high-speed railways. The changes in energy consumption strongly correlate with the type of high-speed rolling stock and operational strategies. The expected outcomes of this research will contribute to developing and advancing more sustainable HSR systems. This research will support train operators in making decisions when acquiring new trains and assess the benefits of acceleration in modernising the current rolling stock.

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Tyurina, E. A., A. S. Mednikov, P. Y. Elsukov, and S. N. Sushko. "Analysis of the efficiency of energy systems of long-distance energy transport." E3S Web of Conferences 124 (2019): 01038. http://dx.doi.org/10.1051/e3sconf/201912401038.

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The article presents the results of the comparative efficiency of energy systems for the transfer of natural gas energy over long distances from large deposits to final consumers. The result of the research is the limits of competitiveness of systems based on direct current transmissions, gas pipelines, a promising technology for converting natural gas to synthetic liquid fuel (SLF) methanol on installations of combined production of SLF and electricity based on their detailed mathematical models.

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Kosai, Shoki, Muku Yuasa, and Eiji Yamasue. "Chronological Transition of Relationship between Intracity Lifecycle Transport Energy Efficiency and Population Density." Energies 13, no. 8 (April 22, 2020): 2094. http://dx.doi.org/10.3390/en13082094.

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Interests in evaluating lifecycle energy use in urban transport have been growing as a research topic. Various studies have evaluated the relationship between the intracity transport energy use and population density and commonly identified its negative correlation. However, a diachronic transition in an individual city has yet to be fully analyzed. As such, this study employed transport energy intensity widely used for evaluating transport energy efficiency and obtained the transport energy intensity for each transportation means including walk, bicycle, automobile (conventional vehicles, electric vehicles, hybrid vehicles, and fuel cell vehicles), bus and electric train by considering the lifecycle energy consumption. Then, the intracity lifecycle transport energy intensity of 38 cities in Japan in 1987–2015 was computed, assuming that the cause of diachronic transition of intracity transport energy efficiency is the modal shifting and electricity mix change. As a result, the greater level of population density was associated with the lower intracity transport energy intensity in Japanese cities. The negative slope of its regression line increased over time since the intracity lifecycle transport energy intensity in cities with low population density continuously increased without any significant change of population density. Finally, this study discussed the strategic implications particularly in regional areas to improve the intracity lifecycle transport energy efficiency.

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Holub, H., V. Kharuta, O. Zaiats, and M. Tkachuk. "RESEARCH OF BIOENERGY POTENTIAL ON IMPROVING ENERGY EFFICIENCY AND ENVIRONMENTALITY IN TRANSPORT PROJECTS." Collection of scientific works of the State University of Infrastructure and Technologies series "Transport Systems and Technologies", no. 39 (June 30, 2022): 262–68. http://dx.doi.org/10.32703/2617-9040-2022-39-25.

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The article considers the problems of energy efficiency management of the rolling stock of the transport sector. The operation and operation of vehicles are analyzed and it is determined that road transport is the main consumer of energy resources in the transport sector, which is about 90%. Road transport requires 6.5 times more fuel than rail, and 5 times more fuel than sea or river. It has been studied that the transport sector has a negative impact on environmental friendliness due to high emissions. To successfully solve this problem, it is necessary to use bioenergy, which will increase the energy efficiency and environmental friendliness of the transport sector and is a strategy for the development of the transport sector of the country and the European Union. An analytical review of legislative acts, namely EU directives and national transport strategy for the period up to 2030, which regulate the promotion of energy efficiency in transport. The main groups of tools and the use of information technology are considered, which allow to achieve the set goals in the development of energy efficiency in transport. The impact of alternative fuels resulting from the processing of biological waste or biological raw materials for the country's transport sector, in particular road transport, which will significantly reduce CO2 emissions, has been studied. Biofuels are able to provide clean energy for all modes of transport and are currently the most important type of alternative fuel. Its influence on improving the energy efficiency and environmental friendliness of the transport sector has been studied.

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Stadnik, N. I., D. A. Semenchenko, A. K. Semenchenko, and P. V. Belitskiy. "Influence of coal transport technologies on energy efficiency of the mine conveyor transport." Geo-Technical mechanics, no. 143 (2018): 85–101. http://dx.doi.org/10.15407/geotm2018.143.085.

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V, Krupnov. "METHODOLOGY FOR MONITORING THE TRANSPORT ENERGY EFFICIENCY OF VEHICLES FOR INTERCITY CARGO TRANSPORTATION." National Transport University Bulletin 1, no. 51 (2022): 242–47. http://dx.doi.org/10.33744/2308-6645-2022-1-51-242-247.

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The article proposes a method of monitoring the transport energy efficiency of cars for long-distance freight transport, which is developed on the example of the analysis of the characteristics of low-capacity vehicles. It is relevant in terms of providing conceptually-oriented renewal of rolling stock for long-distance transport in a market economy. The object of study is the transport and technological process with the use of light-duty vehicles in the conditions of long-distance transportation. The purpose of the work is to form a method of monitoring and analysis of transport energy efficiency of cars for the renewal of rolling stock in suburban and long-distance freight. To achieve this goal, the theory of energy efficiency of a generalized type of car is used. Regularities of quantitative influence of various factors (road resistance index and coefficient of static capacity utilization capacity of rolling stock) on the values of light-duty transport energy efficiency indicators on the calculated main routes are determined. The results of the article can be used in transport companies transporting in Ukraine. KEY WORDS: METHODOLOGY, MONITORING, TRANSPORT ENERGY EFFICIENCY, TECHNICAL AND OPERATING INDICATORS, ROAD, LOW LIFT CAR

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Akbar, Usman, József Popp, Hameed Khan, Muhammad Asif Khan, and Judit Oláh. "Energy Efficiency in Transportation along with the Belt and Road Countries." Energies 13, no. 10 (May 20, 2020): 2607. http://dx.doi.org/10.3390/en13102607.

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China’s huge investment in the “belt and road initiative” (BRI) may have helped improve the economic level of participating countries, but it may also be accompanied by a substantial increase in greenhouse gas (GHG) emissions. The BRI corridors aim to bring regional stability and prosperity. In such efforts, energy efficiency due to increased transport has been overlooked in the recent literature. This paper employed a data envelopment analysis of the slack-based measurement (SBM) for bad output to assess the transport energy efficiency of 19 countries under the BRI economic corridors. By using the most cited transport-related input variables, such as vehicles, labor, motor oil, jet fuel, and natural gas, this study first analyzes the transport energy efficiency by first assuming the output variables individually and then takes two years as a pre- and post-BRI case by considering the aggregated output model. The results show an increase in economic activity but a decline in transport energy efficiency in terms of consumption and emissions.

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E.E. Karsibaev, S.S. Duyshebaev, and A.Zh. Abzhapbarova. "THE MAIN DIRECTIONS OF IMPROVING ENERGY EFFICIENCY IN THE TRANSPORT SECTOR." Herald of KSUCTA n a N Isanov, no. 3 (September 23, 2019): 362–67. http://dx.doi.org/10.35803/1694-5298.2019.3.362-367.

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The article deals with the actual problems of providing the economy with energy-efficient vehicles. The global development trend of the transport sector is its environmental and energyefficient orientation. In Kazakhstan, at the state level, legislative measures and concepts for the introduction and development of the "green" economy are being taken. The article analyzes the causes of high energy consumption in transport, the main directions of implementation of energy efficiency policy in transport. On the example of the largest metropolis of Kazakhstan – Almaty, the main measures to ensure sustainable development of transport, reducing emissions of pollutants into the atmosphere are presented. Also, the international experience in reducing air pollution by exhaust gases is considered, recommendations for its use are given. Energy-efficient focus of the transport sector will ensure the transition of the cities of Kazakhstan to the modern level of development and sustainability, in accordance with the best international practices and strategic documents of the Republic of Kazakhstan.

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Bonnet, Caroline, Stéphane Raël, Melika Hinaje, Sophie Guichard, Théophile Habermacher, Julian Vernier, Xavier François, Marie-Cécile Péra, and François Lapicque. "Direct fuel cell—supercapacitor hybrid power source for personal suburban transport." AIMS Energy 9, no. 6 (2021): 1274–98. http://dx.doi.org/10.3934/energy.2021059.

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<abstract> <p>In view to proposing an alternative to oversized energy sources currently installed in electric vehicles for suburban transport, a direct hybrid fuel cell (FC)-supercapacitors (SC) source has been designed and tested on a test bench. The rated 15.6 kW source—with an air-cooled 5.6 kW FC and a 165 F SC storage device—was shown perfectly suited to traction of a 520 kg vehicle along the NEDC cycle, then validating the previously developed concept of a one-ton car propelled by a 10 kW FC in the rated 30 kW hybrid source for this cycle. In comparison with a FC used alone, hybridization was shown to allow the power demand for the cell to vary in quite a narrower range, as formerly observed. Moreover, the rates of fuel cell voltage and current generated in the driving cycle, were shown to be reduced by one order of magnitude by the direct hybridization which is to contribute to the FC durability. Two operating parameters were shown to have a significant effect on the hybrid source efficiency, namely the capacity of the SC at 110 or 165 F, and the recovery of deceleration power—emulated by an external power supply—which can decrease by 25% the fuel consumption in NEDC cycle conditions, as predicted by the model.</p> </abstract>

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Gamayunova, Olga, and Kirill Kulakov. "Using alternative fuels to increase energy efficiency in the transport sector." E3S Web of Conferences 135 (2019): 02024. http://dx.doi.org/10.1051/e3sconf/201913502024.

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The trend of recent years is the constant increase in fuel consumption by transport. Transport is the most important consumer of the highest quality types of liquid fuel, a large consumer of electricity. The article describes the main types of alternative fuel, the advantages of replacing gasoline with natural gas, evaluates the economic efficiency of conversing a car to gas and proposes general measures for energy conservation and energy efficiency in the transport sector.

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Kashtanov, A. L., A. A. Komyakov, and M. M. Nikiforov. "Forecasting and verification of railway transport energy efficiency key indicators." Herald of the Ural State University of Railway Transport, no. 1 (2021): 46–54. http://dx.doi.org/10.20291/2079-0392-2021-1-46-54.

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The article reflects the issues of forecasting the target indicators of energy efficiency on the example of JSC «Russian Railways». The approaches selected for assessing the quantitative values of the key performance indicators of the Russian Railways holding in the development of the Energy Strategy for the period up to 2020 and for the future up to 2030 are considered. The accepted methods are conventionally classified into four groups, including: a heuristic method based on the analysis of time trends, an indirect method based on known values of indicators and using mathematical models. The method of forecasting the specific consumption of electricity and diesel fuel for train traction and the energy intensity of the production activity of JSC «Russian Railways» is considered in detail. Regression models have been developed that characterize the dependence of the specific fuel and energy consumption on such indicators as the volume of transportation work, the average mass of the train, and the share of freight work in the total work. In order to assess the accuracy of the obtained forecast values of the indicators included in the energy strategy of JSC «Russian Railways», they were verified by the results of 2017-2019. The results obtained allow us to speak about the sufficient effectiveness of the approaches considered in the article to predict the KPI of JSC «Russian Railways». The error in forecasting the main indicator of energy efficiency of JSC «Russian Railways» - the energy intensity of production activities - was 0,06 %.

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Solovev, A. A., D. E. Malkin, M. A. Melkomukov, I. I. Yakushevich, and A. K. Kuguk. "Energy model of transport machines with braking energy recovery." Journal of Physics: Conference Series 2094, no. 4 (November 1, 2021): 042053. http://dx.doi.org/10.1088/1742-6596/2094/4/042053.

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Abstract Most of the time, modern transport vehicles operate in unsteady modes. Undoubtedly, the reasons for the decrease in the efficiency of machines are fluctuations in speed and load, their deviations from the optimal values cause an increase in energy losses. Another reason for the increase in energy losses is the process of forced braking when it is necessary to stop the car. A class of vehicles with hybrid propulsion systems that can recover braking energy are currently being developed. Significant advantages among them are transport vehicles with a flywheel energy storage, which have a long service life. This article discusses the energy model of transport vehicles with the possibility of braking energy recuperation.

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Solaymani, Saeed, and Saeed Sharafi. "A Comparative Study between Government Support and Energy Efficiency in Malaysian Transport." Sustainability 13, no. 11 (May 31, 2021): 6196. http://dx.doi.org/10.3390/su13116196.

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The 2030 Agenda states that sustainable transport systems, as well as other associated energy systems and policies, would create a strong economic foundation for all countries. In this regard, countries need to pay more attention to their transport systems. This has been accomplished through a great deal of work and policies that they can enact, such as improving fuel efficiency and government support. Therefore, this study attempts to compare the impact of a 10% increase in government subsidies and a 5% increase in improvement in fuel efficiency to the transport subsectors in Malaysia using a computable general equilibrium model (CGE). Results suggest that fuel efficiency improvement is an effective policy in increasing economic growth, exports, investment, and household consumption for the entire economy. While both policies increase output, employment, investment, and household use across the transport subsectors, except water transport, the magnitude of the impacts is greater for improving fuel efficiency policy. Improving fuel efficiency, despite the reduction in energy consumption in the land and water transportation subsectors, has led to a rebound in the air and other transport subsectors. However, increasing government subsidies to transport subsectors increases energy consumption and CO2 emissions in these subsectors. The outcomes of this policy can be used for the future of sustainable development in Malaysian transportation systems.

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Misanovic, Slobodan, Zlatomir Zivanovic, and Slaven Tica. "Energy efficiency of different bus subsystems in Belgrade public transport." Thermal Science 19, no. 6 (2015): 2233–44. http://dx.doi.org/10.2298/tsci151116193m.

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Research in this paper comprised experimental determination of energy efficiency of different bus subsystems (diesel bus, trolleybus and fully electric bus) on chosen public transport route in Belgrade. Experimental measuring of energy efficiency of each bus type has been done based on the analysis of parameters of vehicle driving cycles between stops. Results of this analysis were basis for development of theoretical simulation model of energy efficiency. The model was latter compared with the results of simulation done by "Solaris bus & Coach" company for the chosen electric bus route. Based on demonstrated simulation, characteristics of electric bus batteries were defined, the method and dynamic of their recharge was suggested, as well as choice for other aggregates for drive system and technical characteristics for the electric buses were suggested.

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Beresnev, P. O., A. A. Eremin, A. M. Belyaev, D. V. Zezyulin, V. S. Makarov, A. V. Papunin, V. V. Belyakov, V. E. Kolotilin, and A. A. Kurkin. "Energy efficiency evaluation of off-road transport with hydrostatic transmission." Izvestiya MGTU MAMI 10, no. 1 (March 15, 2016): 2–8. http://dx.doi.org/10.17816/2074-0530-66893.

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The paper describes control system for multifunctional off-road transport with hydrostatic transmission movement at adverse terrain. Graphs of simulation results for developed machine are shown to select and justify the parameters, characteristics and adjustments of hydrostatic transmission.

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Chekalin, V. S., М. Yu Ermakova, and I. S. Kovalychuk. "ENHANCING THE ENERGY EFFICIENCY OF RUSSIA'S TRANSPORT INFRASTRUCTURE UNDER DIGITALIZATION." ECONOMIC VECTOR 2, no. 21 (June 2020): 58–61. http://dx.doi.org/10.36807/2411-7269-2020-2-21-58-61.

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Pei, Lei, Glenn Solis, Mien T. X. Nguyen, Nikhil Kamat, Lynn Magenheimer, Min Zhuo, Jiahua Li, et al. "Paracellular epithelial sodium transport maximizes energy efficiency in the kidney." Journal of Clinical Investigation 126, no. 7 (May 23, 2016): 2509–18. http://dx.doi.org/10.1172/jci83942.

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Journal articles on the topic 'Transport energy efficiency'

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