Дисертації з теми "Consumption of thermal and electric energy"
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Vega, Diaz Rolando. "Analysis of an electric environmental control system to reduce the energy consumption of fixed-wing and rotary-wing aircraft." Thesis, Cranfield University, 2011. http://dspace.lib.cranfield.ac.uk/handle/1826/7422.
Повний текст джерелаSilva, Vladimir Freitas Paixão e. "Impactos da redução do consumo de energia eletrica em Manaus atraves de medidas de eficiencia energetica em climatização residencial." [s.n.], 2008. http://repositorio.unicamp.br/jspui/handle/REPOSIP/265049.
Повний текст джерелаDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecanica
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Resumo: Esta dissertação tem como objetivo avaliar os impactos da redução do consumo de energia elétrica em Manaus através de medidas de eficiência energética em climatização residencial. A escolha da correta orientação geográfica, a pintura das paredes e dos telhados com cores claras, a inclusão de isolamento térmico EPS (Isopor) no forro, a inclusão de isolamento reflexivo por baixo do telhado e a abertura de áticos, foram medidas de eficiência energética aplicadas na residência do estudo de caso para avaliar a redução das cargas térmicas dos seus respectivos recintos internos (quartos). Outra medida de eficiência energética utilizada foi a substituição de condicionadores de ar do tipo janela de baixa eficiência por equipamentos de alta eficiência. As estimativas das cargas térmicas resultantes das aplicações das medidas de eficiência energética foram obtidas por meio da utilização do software CARRIER E20-II, HAP, v4.33., cuja licença de uso é encontrada à venda no mercado nacional. Definidas as cargas térmicas dos quartos, foram especificados os condicionadores de ar do tipo janela que seriam usados na climatização desses ambientes. O emprego combinado dessas medidas de eficiência energética permitiu que fossem quantificadas as respectivas economias de consumos e de redução de demanda de energia elétrica e seus efetivos impactos sobre o Sistema Manaus.
Abstract: This thesis aims to assess the impacts of electricity consumption reduction in Manaus through energy efficiency measures applied in home climatization. The choice of correct geographical orientation, walls and roofs painting with clear colors, the inclusion of thermal insulation EPS (Styrofoam) in the lining, the inclusion of reflective insulation under the roof, attic opening and closing, are energy efficiency measures applied in the case study residence to reduce the thermal loads on their respectives rooms. Another efficiency measure used was the replacement of low efficiency window air-conditioners for high-efficiency ones. The resulting thermal loads from the application of these measures were obtained through the use of software CARRIER E20-II, HAP, v4.33., whose using license is found for sale on the domestic market. Defined the rooms thermal loads, the cooling capacities of the window air-conditioners were specified to be used in the cooling of these environments. The combined employment of these energy efficiency measures has allowed quantify their electric energy consumption economies and demand reductions and its impacts on the Manaus System.
Mestrado
Planejamento de Sistemas Energeticos
Mestre em Planejamento de Sistemas Energéticos
Даценко, Ольга Олександрівна. "Підвищення енергоефективності дитячого садочку та моделювання енергоспоживання з використанням сучасного програмного забезпечення". Master's thesis, КПІ ім. Ігоря Сікорського, 2020. https://ela.kpi.ua/handle/123456789/39531.
Повний текст джерелаThe master's dissertation "Improving the energy efficiency of kindergarten and modeling energy consumption using modern software" consists of 99 pages, 28 figures, 49 tables, and also contains 42 sources in the list of references. The relevance of the topic is to use modern methods of monitoring the consumption of energy resources to make the most effective management decisions in terms of energy efficiency. The purpose of the work is to study the energy consumption of the building on the example of a kindergarten and the implementation of energy saving measures. The task of the research is to conduct an energy audit of the kindergarten, calculate the load on the heating and electricity supply system, determine ways to increase the energy efficiency of the building and calculate the feasibility of energy saving measures, develop an automated energy metering system. The object of research is a kindergarten in Kyiv of serial times of construction. In the course of the work a detailed energy audit was performed, which included: - collection of initial data on the characteristics of the building, its enclosing structures and indoor engineering systems; - collection of data on energy consumption of the facility; - study of operating modes; - specification of geometrical characteristics of the building; - calculations of thermal indicators of protections, - study of the microclimate of buildings, - performance of necessary instrumental measurements and calculations; - determination of specific energy characteristics; - development of economically justified measures for energy saving with bringing the characteristics of fences to regulatory requirements; - modeling of energy consumption of the building in a specialized software product with the definition of energy characteristics; - development of proposals for the development of the energy management system. The subject of the research is the analysis of the expediency of carrying out energy saving measures in the spheres of heat and electricity supply in a kindergarten in the city of Kyiv with the use of modern software. The scientific novelty of the master's dissertation is to develop a system of automated energy accounting in kindergarten. The obtained results, proposed methods and approaches can be used to analyze the energy consumption of other buildings.
QUEIROZ, PATRÍCIA VALÉRIA SATHLER DE. "MEASUREMENT OF ELECTRIC ENERGY CONSUMPTION: ALGORITHM FOR DETECTING POTENTIAL USERS OF THERMO-ACCUMULATION AS AN ALTERNATIVE FOR LOAD SHIFT." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2011. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=34588@1.
Повний текст джерелаEsta dissertação desenvolveu-se de forma articulada com o projeto de PeD LIGH-ANEEL, coordenado pelo Programa de Pós-Graduação em Metrologia (PósMQI), Projeto Ref. PeD 003/2008, intitulado Racionalização do uso de energia e aplicação da termoacumulação como estratégia para proposição de tarifa diferenciada voltada a clientes comerciais de alto consumo. A dissertação teve como objetivo o desenvolvimento e validação de um algoritmo para identificação de clientes potenciais ao uso da tecnologia de termoacumulação. O trabalho orientou-se no contexto da crescente demanda por energia imposta ao setor elétrico pela expansão da economia, notadamente em horários de alta demanda. A motivação deste trabalho, atendendo aos interesses do PósMQI na área de energia, é oferecer uma ferramenta de auxílio à decisão para o planejamento energético das concessionárias. Como resultado obteve-se o mapeamento das curvas de cargas, obtidas por meio do sistema computacional desenvolvido (SIMCAR). Este sistema (amigável) permite enquadrar os clientes potenciais, segundo características de consumo estruturadas em três categorias indicativas do uso da termoacumulação: muito potencial, potencial e já modula. Dentre as conclusões, o algoritmo desenvolvido mostrou-se ferramenta eficaz de auxílio ao planejamento energético e a termoacumulação uma alternativa sustentável para adequação da matriz energética do país, podendo gerar economias de até 40 porcento.
An algorithm to measure and detect potential thermo-accumulation customers among the clients of a distributing utility was proposed in this work. Such algorithm uses statistical methods for the treatment of missing data and is applied to the measured hourly demands of medium and high voltage customers of the utility. Basically, the thermo-accumulation technique can be defined as a strategy to shift load from peak hours to off-peak hours. The algorithm allows the construction of load curves from the observed load series after the removal of outliers and/or missing values. From the profile of such curves, the algorithm produces the classification of the clients into three possible categories: higly potential, just potential and non potential (i.e. an already modulated client). Also important to mention this dissertation, is part of an R&D project developed for a brazilian southern utility. A friendly computer system named SIMCAR, developed in Visual Basic, implemented the proposed algorithm. As a final word, in surveys conducted with users of this technology, it was mentioned that the savings on energy consumption can be as high as 40 per cent.
Bruch, Rafael. "Estudo das perdas térmicas de panelas entre o vazamento no forno elétrico à arco e o transporte para o forno-panela." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2012. http://hdl.handle.net/10183/60805.
Повний текст джерелаThe search for improved steel products takes special attention to the melthops. The introduction of ladle metallurgy, and therefore the secondary refining, contributed essentially to increase the quality of steel produced. One effect was to increase the residence time of the steel in the ladle, forcing the use of refractory materials of better quality. Temperature control of liquid steel during the process is of fundamental importance for achieving the requirements of quality and productivity currently required. With the development of technologies and the reach of energetic efficiency, it becomes necessary to reduce the thermal losses during the steel production cycle. In this study the correlations between the thermal losses in the ladles through the knowledge of waiting times and transport times of the ladles to the of the electric arc furnace to the ladle furnace were determined as well as a comparison between temperatures of ladle refractory lining with and without refractory insulation. Improvements in the ladle cycle were proposed to reduce the thermal losses in the ladles and to optimize the ladle cycle and, consequently, to reduce the electric energy in the ladle furnace, reducing the costs involved during the manufacturing process of steel. The results showed statistical significance between the energy consumption in the ladle furnace and heat losses in the ladles. The results obtained showed that minimizing the waiting time of the ladle before the tap and reducing transportation time of the ladle to the ladle furnace are essential to reduce the heat losses in the ladles.
Velloso, Nina Miglioranza. "Alojamento de cachaços em instalações climatizadas : analise de desempenho reprodutivo e do uso de energia eletrica." [s.n.], 2008. http://repositorio.unicamp.br/jspui/handle/REPOSIP/257021.
Повний текст джерелаDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Agricola
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Resumo: A importância da suinocultura brasileira no contexto socioeconômico do país é cada vez mais evidente. Por ser uma atividade que gera milhares de empregos anualmente, além de incrementar o produto interno bruto da nação por meio das expressivas exportações da carne suína, cada vez mais atenção é despendida com os requerimentos dos animais. Apesar disso, pouco tem sido pesquisado sobre as exigências de uma categoria em especial, a dos machos reprodutores do plantel, que são extremamente susceptíveis a condições climáticas adversas. Deste modo, torna-se importante a realização de estudos acerca dos requisitos necessários para mantê-los em conforto térmico, visto que são grandes as perdas na produção devido aos dias muito quentes e às grandes amplitudes térmicas. Uma alternativa para minimizar estas perdas é o uso de sistemas de climatização. Este trabalho teve por objetivo avaliar dois grupos de cachaços, grupos A e B, alojados, respectivamente, em instalações climatizadas por meio de sistema automatizado de ventilação artificial e nebulização, e em instalações climatizadas apenas por ventilação artificial e seguindo o manejo de acionamento dos ventiladores já praticado na propriedade. Foram considerados aspectos de desempenho reprodutivo e conforto térmico dos animais e do uso de energia elétrica pelos equipamentos de climatização. O experimento foi conduzido em uma granja comercial localizada na cidade de Capivari/São Paulo, com animais de uma mesma linhagem genética. O parâmetro utilizado na comparação do desempenho reprodutivo dos animais de ambos os grupos foi a análise das características do sêmen, que se relacionam diretamente com a taxa de prenhez das fêmeas. As edificações de alojamento dos animais também foram comparadas, avaliando-se variáveis climáticas, custos operacionais, gastos com equipamentos de climatização e automação, além da utilização da energia elétrica por parte dos mesmos. Os principais resultados obtidos demonstraram que o sistema de climatização automatizado manteve os animais em uma condição ambiental mais segura, porém não houve melhora nos índices de qualidade seminal dos animais deste grupo. Os valores médios de volume seminal e concentração espermática foram superiores nos animais do grupo B. Os impactos no custo mensal da conta de energia elétrica do posto transformador que fornece energia elétrica para a instalação dos cachaços foram de 2,26% e de 4,82%, para os dois meses completos avaliados
Abstract: Swine grow activities in Brazil is exhibiting an increasing importance to the national social economy. The particular attention devoted to the animal physical requirements is strongly supported by the direct and indirect job opportunities generated as well as by the significant swine meet exportation which push the national internal gross product to high levels. In spite of that, little research efforts has been directed to a special animal group identified as the breeding stock reproducing males, which are very susceptible to temperature changes. That information gives support to a deep study on animal thermal comfort, which is strongly associated to production losses and to the thermal amplitude variations. The application of environmental controlling systems aims to minimize these above referred losses. This research work aimed to evaluate two groups of males, named group A and group B, kept under artificial automatic ventilation and nebulization, as well as only under artificial ventilation following the traditional fan operation, respectively. Factors as reproducing performance, animal thermal comfort, as well as electrical energy use by the environment controlling system have been considered. Experimental trials were carried in a swine growing facility located at Capivari, SP, Brazil by employing animals belonging to a same commercial genetic group. Semen characteristics were employed as a factor of comparison, which are associated to the female pregnancy rate. The shelter¿s building of those animals were also compared, by assessing up climatic variables, operating costs, spending on air conditioning equipment and automation, and the use of electric energy by them. The main results showed that the automated system of air conditioning kept the animals in a safer environmental condition, however there was no improvement in seminal quality scores for the animals of this group. The mean values of seminal volume and sperm concentration were higher in the animals of group B. The impacts on the cost of monthly account of electric energy of the post processor, which provides electricity for the installation of males, were 2.26% and 4.82% for the two whole months assessed.
Mestrado
Construções Rurais e Ambiencia
Mestre em Engenharia Agrícola
Ferasso, Clauber Andre. "Análise do impacto causado por sistemas de aquecimento solar na demanda e no consumo de energia elétrica em residências populares." Universidade do Vale do Rio dos Sinos, 2013. http://www.repositorio.jesuita.org.br/handle/UNISINOS/4113.
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FINEP - Financiadora de Estudos e Projetos
A contribuição das fontes de energias alternativas, principalmente a solar térmica, para a diversificação da matriz energética brasileira é importante devido, principalmente, ao aumento da demanda do consumo de energia elétrica, ocasionado pelo progresso e desenvolvimento da população e do País. Parte deste aumento é consequência do uso simultâneo de milhares de chuveiros elétricos, na maioria das vezes no horário de ponta, considerado um dos responsáveis pelo elevado pico na curva de demanda entre 18 e 21 horas. Frente a isso, a utilização da energia solar através de sistemas de aquecimento solar para o uso doméstico, vem ao encontro deste propósito. Após análise do consumo médio mensal de energia elétrica fornecida pela concessionária AES Sul no período de um ano em um conjunto residencial na cidade de Canoas – RS, foi possível estimar o custo da utilização do chuveiro elétrico nesse local, por domicílio, que representa entre 25 a 30 % da fatura de energia elétrica. A produção de energia térmica através de sistemas de aquecimento solar para pré- aquecimento de água quente para uso doméstico foi simulada utilizando-se o software TRNSYS, para diversas configurações de sistemas (área de coletor e capacidade de armazenamento). A relação entre a demanda de energia para aquecimento de água e a energia produzida pelo SAS foi parametrizada utilizando-se o conceito de fração solar mensal e anual. Foi considerada uma temperatura mínima de consumo de água quente de 40 °C e um perfil de consumo correspondente à taxa de ocupação média dos domicílios no local. Os dados climáticos necessários para a simulação foram obtidos a partir do ano meteorológico típico (TMY) para Porto Alegre. Os resultados obtidos das diversas simulações mostraram que é possível obter uma economia direta para consumidor de até 58% de energia consumida pelo chuveiro elétrico e uma economia de energia estimada em 12.399 kWh para o sistema elétrico ao longo de 20 anos. Estes resultados podem ser melhorados com a diminuição do custo unitário do SAS ou através de incentivos decorrentes da diminuição dos custos de ampliação da capacidade da rede elétrica por parte das concessionárias, decorrentes da mudança do perfil de carga do sistema.
The contribution of alternative energy sources, particularly solar thermal, to diversify the Brazilian energy matrix is important, mainly due to increased demand of electricity consumption, caused by the progress and development of the population as well as the country. Part of this increase is a consequence of the simultaneous use of thousands of electric showers, mostly during peak hours, considered one of the chief responsible for the high peak in the demand curve between 6.00 and 9.00PM. Given this, the use of solar energy, through solar heating systems for domestic use, meets this purpose. After the analysis of the average monthly consumption of electricity provided by the supplier AES Sul in the period of one year in a residential complex in the city of Canoas – RS, it was possible to estimate the cost of using electric showers in that location, per household, which was between 25 to 30% of the electricity bill. The production of thermal energy through solar heating systems for preheating domestic hot water was simulated using the TRNSYS software for various system configurations (collector area and storage capacity). The relationship between energy demand for water heating and energy produced by SAS was parameterized using the concept of monthly and annual solar fraction, considering a minimum temperature of hot water of 40 ° C, and a profile of consumption corresponding to the average occupancy rate of households at the site. The climatic data required for the simulation were obtained from the typical meteorological year (TMY) to Porto Alegre and the results of several simulations showed that it is possible to get direct savings to the consumer up to 58% of energy consumed by electric shower and energy savings estimated at 12,399 kWh for the electricity system over a period of 20 years. These results can be improved by reducing the unit cost of SAS or through incentives from lowering the cost of expanding the capacity of the electric grid by suppliers, resulting from the change of the system load profile.
Saccani, Michele. "Whole ship energy optimization: the case study of a chemical tanker." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amslaurea.unibo.it/6324/.
Повний текст джерелаSun, Zhifeng. "Energy Consumption Optimization of Electric Vehicles." Thesis, KTH, Fordonsdynamik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-302774.
Повний текст джерелаDenna rapport avhandlar ett examensarbete där flera metoder har studerats för att förbättra energikonsumptionen för ett elektriskt fordon med två permanentmagnetsynkrona motorer. Två fördelningskartor för drivande moment är framtagna baserat på effektivitetskartor och lastöverföring. Fördelningskartorna för drivande moment som är baserat på effektivitet visar upp till 8,94% energiminskning. Två olika regenerativa bromsstrategier är framtagna och jämförda. Båda strategierna har ren regeneration vid låga decelerationer och är reglerat genom modifierat gaspedalsmappning. Strategi 1 ger inte mer regeneration när bromspedalen trycks ned och är då enklare medans strategi 2 kan blanda in mer vridmoment från elmotorn. Bakaxelstyrning är också studerat i termer av dess bidrag till energikonsumption samt en LQR regulator är utvecklad för reglering av fordonets bakaxelstyrning.
Gomes, César Emanuel Brandão. "Fine grained monitoring of electric energy consumption." Master's thesis, Universidade de Aveiro, 2012. http://hdl.handle.net/10773/10937.
Повний текст джерелаHoje em dia assistimos a uma grande pressão e esforço no sentido de estimular a conservação de energia, seja devido a limitações económicas, preocupações ambientais, ou normas regulatórias. No topo do consumo de energia está a energia sob a forma de electricidade Para se conseguir incentivar a utilização eficiente da energia é necessário fornecer consciencialização energética. Se os consumidores de elecricidade tiverem acesso a informação detalhada sobre como, quando e que aparelhos estão a consumir energia, estes poderão tomar boas e bem suportadas decisões e anuir mudar os seus hábitos de modo a reduzir o consumo de energia, e por fim, gastar menos dinheiro. O projecto aqui apresentado desenvolve as bases para um aparelho que fornece informação detalhada sobre o consumo de energia eléctrica para uma casa. A informação a ser fornecida deverá ser separada individualmente para virtualmente cada aparelho singular presente. A técnica escolhida para desenvolver o aparelho foi Monitorização Não Intrusiva de Cargas de Aparelhos. A partir de um único ponto de medida o sistema deverá identificar as cargas individuais na casa, o que faz com que o hardware tenda a ser simples e minimal, recaindo a complexidade para o software. O sistema desenvolvido deverá ser de baixo custo e de fácil instalação. O sistema que foi desenvolvido foi capaz de identificar individualmente e com grande sucesso os aparelhos presentes num ambiente controlado. Ao contrário de outros sistemas deste tipo, o sistema apresentado nesta dissertação é capaz de distinguir cargas eletricamente idênticas, através do uso da técnica de Medição Indirecta de Potência implementada através de uma Rede de Sensores Sem Fios.
Nowadays we witness a great pressure and effort in order to stimulate energy conservation, either due to economic constraints, environmental concerns, or regulatory pressures. At the top of the energy consumption is the consumption of energy in the form of electricity. The first step to improve energy utilization efficiency is energy awareness. So if there is some manner to provide the average person information about how he is consuming electricity, he may take it by its own interest, and In fact, if electricity consumers have access to detailed information about how, when and by which devices energy is consumed, they can make good and well supported decisions on how they can change their habits to spend less energy and ultimately spend less money. The project hereby presented, develops the basis for a device that provides detailed information on electrical energy expenditure for a home. The information to be provided aims to be disambiguated for virtually every individual appliance present. The chosen technique to develop such a device was Non-Intrusive Appliance Load Monitoring. The system identifies individual loads from a single measurement point. That makes that the hardware tends to be simple and minimal, passing the complexity to the software. The system aims to be very low cost and easy to deploy. The system developed was able to identify with great success individual appliances in the total load on a controlled environment. Unlike other systems of this type, the system presented in this dissertation has the ability of disambiguating electrically identical loads, by the use of the technique of Indirect Power Sensing deployed with a Wireless Sensor Network
Armstrong, Stephen George. "Thermal evaluation of building detail." Thesis, University of Newcastle Upon Tyne, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.387382.
Повний текст джерелаLi, Huan. "Energy consumption minimization strategy for fuel cell hybrid electric vehicles." Thesis, Bourgogne Franche-Comté, 2018. http://www.theses.fr/2018UBFCA034/document.
Повний текст джерелаGlobal warming, environment pollution and exhaustion of petroleum energies have risen their attention of the humanity over the world. Fuel cell hybrid electric vehicle (FCHEV) taking hydrogen as fuel and have zero emission, is thought by public and private organisms as one of the best ways to solve these problems. This PhD dissertation consider a FCHEV with three power sources: fuel cell, battery and supercapacitor, which increases the difficult to design an energy management strategy (EMS) to split the power between the different power sources.Among the EMS available in the current literature, the Equivalent consumption minimization strategy (ECMS) was selected because it allows a local optimization without rely on prior knowledge of driving condition while giving optimal results.Due to low energy density of supercapacitor, its equivalent hydrogen consumption is neglected in most bibliographic references, which not only counter to the aim of minimizing whole hydrogen consumption but also increase the complication of EMS due to the need of an additional EMS to calculate supercapacitor power demand. Thus, a sequential quadratic programming ECMS (SECMS) strategy is proposed to consider energy cost of all three power sources into the objective function. A rule based control strategy (RBCS) and hybrid strategy (HEOS) are also designed in order to to be compared with SECMS. Degradation of energy sources represents a major challenge for the stability of the developed SECMS system. So, based on online estimating state of heath of fuel cell and battery, an adaptive ECMS (AECMS) has been designed through adjusting the equivalent factor and dynamical change rate of fuel cell. The simulation results show that the AECMS can ensure the charge sustenance of battery and the increase of fuel cell durability.To validate the proposed energy management algorithms and the numerical models an exerimental test bench has been built around the real time interface DSPACE. The comparison of the simulation and experimental results showed that the proposed SECMS is operated at around maximum efficiency, supercapacitor supplies peak power, battery works as the energy buffer. It has been proved that the neglect of supercapacitor equivalent hydrogen consumption in ECMS leads to not optimal operation. Compared with RBCS and HEOS, SECMS has least hydrogen consumption and most stable fuel cell current
Mardikar, Yogesh Mukesh. "Establishing baseline electrical energy consumption in wood processing sawmills a model based on energy analysis and diagnostics /." Morgantown, W. Va. : [West Virginia University Libraries], 2007. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=5412.
Повний текст джерелаTitle from document title page. Document formatted into pages; contains xvi, 222 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 203-207).
Kamanzi, Janvier. "Thermal electric solar power conversion panel development." Thesis, Cape Peninsula University of Technology, 2017. http://hdl.handle.net/20.500.11838/2527.
Повний текст джерелаThe world has been experiencing energy-related problems following pressuring energy demands which go along with the global economy growth. These problems can be phrased in three paradoxical statements: Firstly, in spite of a massive and costless solar energy, global unprecedented energy crisis has prevailed, resulting in skyrocketing costs. Secondly, though the sun releases a clean energy, yet conventional plants are mainly being run on unclean energy sources despite their part in the climate changes and global warming. Thirdly, while a negligible percentage of the solar energy is used for power generation purposes, it is not optimally exploited since more than its half is wasted in the form of heat which contributes to lowering efficiency of solar cells and causes their premature degradation and anticipated ageing. The research is geared at addressing the issue related to unsatisfactory efficiencies and anticipated ageing of solar modules. The methodology adopted to achieve the research aim consisted of a literature survey which in turn inspired the devising of a high-efficiency novel thermal electric solar power panel. Through an in-depth overview, the literature survey outlined the rationale of the research interest, factors affecting the performance of PVs as well as existing strategies towards addressing spotted shortcomings. While photovoltaic (PV) panels could be identified as the most reliable platform for sunlight-to-electricity conversion, they exhibit a shortcoming in terms of following the sun so as to maximize exposure to sunlight which negatively affects PVs’ efficiencies in one hand. On the other hand, the inability of solar cells to reflect the unusable heat energy present in the sunlight poses as a lifespan threat. Strategies and techniques in place to track the sun and keep PVs in nominal operational temperatures were therefore reviewed.
Kunchum, Sandeep. "A network infrastructure for real-time monitoring of campus energy consumption." Diss., Rolla, Mo. : University of Missouri-Rolla, 2007. http://scholarsmine.mst.edu/thesis/pdf/Kunchum_09007dcc80490489.pdf.
Повний текст джерелаVita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed March 26, 2008) Includes bibliographical references (p. 83-84).
Si, Yau-li. "Forecasts of electricity demand and their implication for energy developments in Hong Kong." [Hong Kong : University of Hong Kong], 1990. http://sunzi.lib.hku.hk/hkuto/record.jsp?B13009102.
Повний текст джерелаChawdhry, P. K. "Identification of boiler-turbine systems in electric power stations." Thesis, Queen's University Belfast, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.372987.
Повний текст джерелаWilmshurst, Andrea Denise. "Industrial drying with special reference to electric infra-red." Thesis, University of Cambridge, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.303242.
Повний текст джерела黃毓琛 and Yuk-sum Wong. "Performance simulation and energy coordination for electric vehicles." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2000. http://hub.hku.hk/bib/B31223734.
Повний текст джерелаMangisa, Siphumlile. "Statistical analysis of electricity demand profiles." Thesis, Nelson Mandela Metropolitan University, 2013. http://hdl.handle.net/10948/d1011548.
Повний текст джерелаHowell, P. J. L. "Modelling the thermal performance of intensive pig buildings." Thesis, University of Reading, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.356233.
Повний текст джерелаYao, Enxin. "Optimization of energy consumption schedule of residential loads and electric vehicles." Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/58302.
Повний текст джерелаApplied Science, Faculty of
Electrical and Computer Engineering, Department of
Graduate
Negrão, Cezar O. R. "Conflation of computational fluid dynamics and building thermal simulation." Thesis, University of Strathclyde, 1995. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=21238.
Повний текст джерелаGregg, Christopher B. "ALTERNATIVE ENERGY TESTBED ELECTRIC VEHICLE AND THERMAL MANAGEMENT SYSTEM INVESTIGATION." Ohio University / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1187371346.
Повний текст джерелаZumr, Zdenek. "Last Mile Asset Monitoring: Low Cost Rapid Deployment Asset Monitoring." PDXScholar, 2014. https://pdxscholar.library.pdx.edu/open_access_etds/1967.
Повний текст джерелаTaghi, Nazari Alireza. "Interaction between thermal comfort and HVAC energy consumption in commercial buildings." Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/597.
Повний текст джерелаFedor, Craig Steven. "Synthesizing Vehicle Cornering Modes for Energy Consumption Analysis." Thesis, Virginia Tech, 2018. http://hdl.handle.net/10919/83556.
Повний текст джерелаMaster of Science
Harvey, Daniel R. "Willans Line Modeling for Powertrain Analysis and Energy Consumption of Electric Vehicles." Thesis, Virginia Tech, 2021. http://hdl.handle.net/10919/104087.
Повний текст джерелаMaster of Science
Developing robust and accurate methods for analyzing electric vehicle energy consumption and powertrain efficiency is of great interest. For the purposes of this paper, powertrain refers to a motor / inverter pair which is coupled to a simple gear reduction for torque multiplication. Many vehicles are designed with motors of varying power and torque capabilities which can present challenges when attempting to effectively compare electric vehicles from different manufacturers. The proposed modeling method presented in this work utilizes public test data to derive detailed vehicle and powertrain information. Vehicle energy consumption is also modeled and compared to net EPA test data. Eight electric vehicles are modeled with each vehicle representing a specific segment of the current electric vehicle market. A bi-directional Willans line is applied to model the propel and brake phases of each electric vehicle over the US certification drive cycles. The bi-directional approach effectively isolates the vehicle powertrain from non-intrinsic losses. From the derived powertrain parameters and modeled energy consumption, the proposed method is deemed accurate and highly useful for translating public test data to detailed vehicle information. Lastly, a sensitivity analysis is presented with the proposed method deemed reasonably resilient to changes in input parameters. The modeling method is most sensitive to changes of powertrain marginal efficiency and vehicle accessory load but constraining these inputs to reasonable ranges for electric vehicles proves sufficient.
Lord, Nathan. "Simulation Tools for Predicting Energy Consumption and Range of Electric Two-wheelers." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1468844436.
Повний текст джерелаBeute, Nico. "Domestic utilisation of electrical grid energy in South Africa." Thesis, Potchefstroom University, 1993. http://hdl.handle.net/20.500.11838/2187.
Повний текст джерелаThe domestic sector is one of the largest users of nett energy in the RSA (24%, excluding energy used for transport), but it accounts for only 14% of the electrical energy used in the RSA. There is a very strong correlation between the time of the peak of the load for the domestic sector and the time of the peak of the national load. The domestic load is the largest contributor to the peak of the national load. This makes the domestic load more important than is generally realised. Only limited research has been done about the ways in which domestic energy is used in South Africa. Developed countries, such as the United States of America, are continuously engaged in end-use load research, so they have vast data banks available on domestic end-uses of electricity. Data on domestic end-use of electricity are urgently needed especially for South Africa with its very fast growing newly urbanised sector. Since most energy sources are not replenishable, ways and means must be found to promote the wise and effective use of all forms of energy. Effective use of energy can only be promoted if the ways in which electricity is used are known. In this dissertation the electrical energy requirements of the South African domestic sector are analyzed for the present situation and for the next few decades. A model is developed to represent the electrical load. The model has subsections representing the components of the national domestic electrical load, concentrating on electrical energy for domestic water heating, with responses to factors such as: * population growth, * urbanisation, * electrification, * energy efficiency of appliances, * consumer awareness of energy conservation. The model is to be used for scenario planning of the electrical grid. The results of this study will assist to ensure effective planning of the electrical grid of South Africa into the next century.
Pereira, de Araujo Joao Lucas. "Promoting residential energy conservation through real-time consumption feedback /." Connect to resource, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1164833138.
Повний текст джерелаTamaro, Courtney Alex. "Vehicle powertrain model to predict energy consumption for ecorouting purposes." Thesis, Virginia Tech, 2016. http://hdl.handle.net/10919/71635.
Повний текст джерелаMaster of Science
Al-Bakri, Usama A. R. "Natural ventilation in traditional courtyard houses in the central region of Saudi Arabia." Thesis, Cardiff University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.391599.
Повний текст джерелаKhan, Bruno Shakou. "Optimization of the fuel consumption of a parallel hybrid electric vehicle." Thesis, Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/16763.
Повний текст джерелаHashim, Nizar Hessain. "Evaluation of alternative thermal strategies for the precast concrete system houses in Jeddah, Saudi Arabia." Thesis, Cardiff University, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.358781.
Повний текст джерелаSodagar, Behzad. "An investigation into the thermal performance of housing in the hot dry climate of Iran." Thesis, University of Newcastle Upon Tyne, 1991. http://hdl.handle.net/10443/288.
Повний текст джерелаWright, Andrew John. "The development and use of a model for investigating the thermal behaviour of industrial buildings." Thesis, Open University, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.284684.
Повний текст джерелаRIFAI, Nabil. "Monitoring the energy consumption in buildings in B2B sector." Thesis, KTH, Tillämpad termodynamik och kylteknik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-183387.
Повний текст джерелаXie, Tian. "Multi-zone modeling of Thermal Comfort and Energy Consumption of a hospital ward : a summer case study." Thesis, Högskolan i Gävle, Avdelningen för bygg- energi- och miljöteknik, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-7160.
Повний текст джерелаNicholson, Emma Leah. "Essays on restructured electricity markets." Connect to Electronic Thesis (ProQuest) Connect to Electronic Thesis (CONTENTdm), 2008. http://worldcat.org/oclc/436443232/viewonline.
Повний текст джерелаNewsham, Guy R. "Investigating the role of thermal comfort in the assessment of building energy performance using a spatial model." Thesis, University of Cambridge, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.292780.
Повний текст джерелаXu, Tianyang. "Research on Building Thermal Model and Energy Consumption Estimation Based on Infrared Thermalgraphy." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018.
Знайти повний текст джерела黃毓琛 and Yuk-sum Wong. "System design and energy management strategy for hybrid electric vehicles." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B3955885X.
Повний текст джерелаLee, Sang Hoon. "Management of building energy consumption and energy supply network on campus scale." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/43580.
Повний текст джерелаMoniot, Matthew Louis. "Path Selection to Minimize Energy Consumption of an Electric Vehicle using Synthetic Speed Profiles and Predictive Terminal Energy." Thesis, Virginia Tech, 2017. http://hdl.handle.net/10919/78223.
Повний текст джерелаMaster of Science
Banvait, Harpreetsingh. "OPTIMAL ENERGY MANAGEMENT SYSTEM OF PLUG-IN HYBRID ELECTRIC VEHICLE." ProQuest, 2009. http://hdl.handle.net/1805/2095.
Повний текст джерелаPlug-in Hybrid Electric Vehicles (PHEV) are new generation Hybrid Electric Vehicles (HEV) with larger battery capacity compared to Hybrid Electric Vehicles. They can store electrical energy from a domestic power supply and can drive the vehicle alone in Electric Vehicle (EV) mode. According to the U.S. Department of Transportation 80 % of the American driving public on average drives under 50 miles per day. A PHEV vehicle that can drive up to 50 miles by making maximum use of cheaper electrical energy from a domestic supply can significantly reduce the conventional fuel consumption. This may also help in improving the environment as PHEVs emit less harmful gases. However, the Energy Management System (EMS) of PHEVs would have to be very different from existing EMSs of HEVs. In this thesis, three different Energy Management Systems have been designed specifically for PHEVs using simulated study. For most of the EMS development mathematical vehicle models for powersplit drivetrain configuration are built and later on the results are tested on advanced vehicle modeling tools like ADVISOR or PSAT. The main objective of the study is to design EMSs to reduce fuel consumption by the vehicle. These EMSs are compared with existing EMSs which show overall improvement. x In this thesis the final EMS is designed in three intermediate steps. First, a simple rule based EMS was designed to improve the fuel economy for parametric study. Second, an optimized EMS was designed with the main objective to improve fuel economy of the vehicle. Here Particle Swarm Optimization (PSO) technique is used to obtain the optimum parameter values. This EMS has provided optimum parameters which result in optimum blended mode operation of the vehicle. Finally, to obtain optimum charge depletion and charge sustaining mode operation of the vehicle an advanced PSO EMS is designed which provides optimal results for the vehicle to operate in charge depletion and charge sustaining modes. Furthermore, to implement the developed advanced PSO EMS in real-time a possible real time implementation technique is designed using neural networks. This neural network implementation provides sub-optimal results as compared to advanced PSO EMS results but it can be implemented in real time in a vehicle. These EMSs can be used to obtain optimal results for the vehicle driving conditions such that fuel economy is improved. Moreover, the optimal designed EMS can also be implemented in real-time using the neural network procedure described.
Benítez, Sánchez Ignacio Javier. "Dynamic segmentation techniques applied to load profiles of electric energy consumption from domestic users." Doctoral thesis, Universitat Politècnica de València, 2015. http://hdl.handle.net/10251/59236.
Повний текст джерела[ES] El sector eléctrico se halla actualmente sometido a un proceso de liberalización y separación de roles, que está siendo aplicado bajo los auspicios regulatorios de cada Estado Miembro de la Unión Europea y, por tanto, con distintas velocidades, perspectivas y objetivos que deben confluir en un horizonte común, en donde Europa se beneficiará de un mercado energético interconectado, en el cual productores y consumidores podrán participar en libre competencia. Este proceso de liberalización y separación de roles conlleva dos consecuencias o, visto de otra manera, conlleva una consecuencia principal de la cual se deriva, como necesidad, otra consecuencia inmediata. La consecuencia principal es el aumento de la complejidad en la gestión y supervisión de un sistema, el eléctrico, cada vez más interconectado y participativo, con conexión de fuentes distribuidas de energía, muchas de ellas de origen renovable, a distintos niveles de tensión y con distinta capacidad de generación, en cualquier punto de la red. De esta situación se deriva la otra consecuencia, que es la necesidad de comunicar información entre los distintos agentes, de forma fiable, segura y rápida, y que esta información sea analizada de la forma más eficaz posible, para que forme parte de los procesos de toma de decisiones que mejoran la observabilidad y controlabilidad de un sistema cada vez más complejo y con más agentes involucrados. Con el avance de las Tecnologías de Información y Comunicaciones (TIC), y las inversiones tanto en mejora de la infraestructura existente de medida y comunicaciones, como en llevar la obtención de medidas y la capacidad de actuación a un mayor número de puntos en redes de media y baja tensión, la disponibilidad de datos sobre el estado de la red es cada vez mayor y más completa. Todos estos sistemas forman parte de las llamadas Smart Grids, o redes inteligentes del futuro, un futuro ya no tan lejano. Una de estas fuentes de información proviene de los consumos energéticos de los clientes, medidos de forma periódica (cada hora, media hora o cuarto de hora) y enviados hacia las Distribuidoras desde los contadores inteligentes o Smart Meters, mediante infraestructura avanzada de medida o Advanced Metering Infrastructure (AMI). De esta forma, cada vez se tiene una mayor cantidad de información sobre los consumos energéticos de los clientes, almacenada en sistemas de Big Data. Esta cada vez mayor fuente de información demanda técnicas especializadas que sepan aprovecharla, extrayendo un conocimiento útil y resumido de la misma. La presente Tesis doctoral versa sobre el uso de esta información de consumos energéticos de los contadores inteligentes, en concreto sobre la aplicación de técnicas de minería de datos (data mining) para obtener patrones temporales que caractericen a los usuarios de energía eléctrica, agrupándolos según estos mismos patrones en un número reducido de grupos o clusters, que permiten evaluar la forma en que los usuarios consumen la energía, tanto a lo largo del día como durante una secuencia de días, permitiendo evaluar tendencias y predecir escenarios futuros. Para ello se estudian las técnicas actuales y, comprobando que los trabajos actuales no cubren este objetivo, se desarrollan técnicas de clustering o segmentación dinámica aplicadas a curvas de carga de consumo eléctrico diario de clientes domésticos. Estas técnicas se prueban y validan sobre una base de datos de consumos energéticos horarios de una muestra de clientes residenciales en España durante los años 2008 y 2009. Los resultados permiten observar tanto la caracterización en consumos de los distintos tipos de consumidores energéticos residenciales, como su evolución en el tiempo, y permiten evaluar, por ejemplo, cómo influenciaron en los patrones temporales de consumos los cambios regulatorios que se produjeron en España en el sector eléctrico durante esos años.
[CAT] El sector elèctric es troba actualment sotmès a un procés de liberalització i separació de rols, que s'està aplicant davall els auspicis reguladors de cada estat membre de la Unió Europea i, per tant, amb distintes velocitats, perspectives i objectius que han de confluir en un horitzó comú, on Europa es beneficiarà d'un mercat energètic interconnectat, en el qual productors i consumidors podran participar en lliure competència. Aquest procés de liberalització i separació de rols comporta dues conseqüències o, vist d'una altra manera, comporta una conseqüència principal de la qual es deriva, com a necessitat, una altra conseqüència immediata. La conseqüència principal és l'augment de la complexitat en la gestió i supervisió d'un sistema, l'elèctric, cada vegada més interconnectat i participatiu, amb connexió de fonts distribuïdes d'energia, moltes d'aquestes d'origen renovable, a distints nivells de tensió i amb distinta capacitat de generació, en qualsevol punt de la xarxa. D'aquesta situació es deriva l'altra conseqüència, que és la necessitat de comunicar informació entre els distints agents, de forma fiable, segura i ràpida, i que aquesta informació siga analitzada de la manera més eficaç possible, perquè forme part dels processos de presa de decisions que milloren l'observabilitat i controlabilitat d'un sistema cada vegada més complex i amb més agents involucrats. Amb l'avanç de les tecnologies de la informació i les comunicacions (TIC), i les inversions, tant en la millora de la infraestructura existent de mesura i comunicacions, com en el trasllat de l'obtenció de mesures i capacitat d'actuació a un nombre més gran de punts en xarxes de mitjana i baixa tensió, la disponibilitat de dades sobre l'estat de la xarxa és cada vegada major i més completa. Tots aquests sistemes formen part de les denominades Smart Grids o xarxes intel·ligents del futur, un futur ja no tan llunyà. Una d'aquestes fonts d'informació prové dels consums energètics dels clients, mesurats de forma periòdica (cada hora, mitja hora o quart d'hora) i enviats cap a les distribuïdores des dels comptadors intel·ligents o Smart Meters, per mitjà d'infraestructura avançada de mesura o Advanced Metering Infrastructure (AMI). D'aquesta manera, cada vegada es té una major quantitat d'informació sobre els consums energètics dels clients, emmagatzemada en sistemes de Big Data. Aquesta cada vegada major font d'informació demanda tècniques especialitzades que sàpiguen aprofitar-la, extraient-ne un coneixement útil i resumit. La present tesi doctoral versa sobre l'ús d'aquesta informació de consums energètics dels comptadors intel·ligents, en concret sobre l'aplicació de tècniques de mineria de dades (data mining) per a obtenir patrons temporals que caracteritzen els usuaris d'energia elèctrica, agrupant-los segons aquests mateixos patrons en una quantitat reduïda de grups o clusters, que permeten avaluar la forma en què els usuaris consumeixen l'energia, tant al llarg del dia com durant una seqüència de dies, i que permetent avaluar tendències i predir escenaris futurs. Amb aquesta finalitat, s'estudien les tècniques actuals i, en comprovar que els treballs actuals no cobreixen aquest objectiu, es desenvolupen tècniques de clustering o segmentació dinàmica aplicades a corbes de càrrega de consum elèctric diari de clients domèstics. Aquestes tècniques es proven i validen sobre una base de dades de consums energètics horaris d'una mostra de clients residencials a Espanya durant els anys 2008 i 2009. Els resultats permeten observar tant la caracterització en consums dels distints tipus de consumidors energètics residencials, com la seua evolució en el temps, i permeten avaluar, per exemple, com van influenciar en els patrons temporals de consums els canvis reguladors que es van produir a Espanya en el sector elèctric durant aquests anys.
Benítez Sánchez, IJ. (2015). Dynamic segmentation techniques applied to load profiles of electric energy consumption from domestic users [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/59236
TESIS
Vuppuluri, Prem Kiran. "Impact of Sustainable Cool Roof Technology on Building Energy Consumption." PDXScholar, 2014. http://pdxscholar.library.pdx.edu/open_access_etds/1530.
Повний текст джерелаModlin, Danny Robert. "Utilizing time series analysis to forecast long-term electrical consumption /." Electronic version (PDF), 2006. http://dl.uncw.edu/etd/2006/modlind/dannymodlin.pdf.
Повний текст джерелаDel, Barga Christopher. "Design and Optimization of a Mobile Hybrid Electric System to Reduce Fuel Consumption." Thesis, Virginia Tech, 2015. http://hdl.handle.net/10919/76797.
Повний текст джерелаMaster of Science