Dissertations / Theses on the topic 'Energy'
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Золотова, Світлана Григорівна, Светлана Григорьевна Золотова, Svitlana Hryhorivna Zolotova, and T. V. Konoplenko. "Energy producing: solar energy." Thesis, Видавництво СумДУ, 2011. http://essuir.sumdu.edu.ua/handle/123456789/13440.
Full textGohar, Ali Hina. "Maximum Power Point Tracking of Photovoltaic system using Non-Linear Controllers." Doctoral thesis, Universitat Autònoma de Barcelona, 2020. http://hdl.handle.net/10803/671122.
Full textLa creciente demanda de energía, el agotamiento de los combustibles fósiles y el aumento del calentamiento global debido a la emisión de carbono han hecho surgir la necesidad de un sistema energético alternativo, de eficiencia general y respetuoso con el medio ambiente. La energía solar se considera una de las formas de energía más inagotables de este universo, pero tiene el problema de la baja eficiencia debido a las diferentes condiciones ambientales. El panel solar exhibe un comportamiento no lineal en condiciones climáticas reales y la potencia de salida fluctúa con la variación de la irradiancia solar y la temperatura. Las condiciones climáticas cambiantes y el comportamiento no lineal de los sistemas fotovoltaicos plantean un desafío en el seguimiento de la variación máxima de PowerPoint. Por lo tanto, para extraer y entregar continuamente la máxima potencia posible del sistema fotovoltaico, en determinadas condiciones ambientales, se debe formular la estrategia de control de seguimiento del punto de máxima potencia (MPPT) que opere continuamente el sistema fotovoltaico en su MPP. Se requiere un controlador no lineal robusto para asegurar MPPT manejando las no linealidades de un sistema y haciéndolo robusto frente a condiciones ambientales cambiantes. El control de modo deslizante (SMC) se usa ampliamente en sistemas de control no lineales y se ha implementado en sistemas fotovoltaicos (PVC) para rastrear MPP. SMC es robusto contra perturbaciones, incertidumbres del modelo y variaciones paramétricas. Representa fenómenos indeseables como el parloteo, inherentes a él, que provocan pérdidas de energía y calor. En esta tesis, en primer lugar, se formula un controlador SMC de orden entero para extraer la máxima potencia de un sistema fotovoltaico solar en condiciones climáticas variables empleando el esquema MPPT de perturbar y observar (P&O) para el sistema fotovoltaico autónomo propuesto. El sistema propuesto consta de dos esquemas de bucles, a saber, el bucle de búsqueda y el bucle de seguimiento. P&O MPPT se utiliza en el bucle de búsqueda para generar la señal de referencia y se utiliza un controlador SMC de seguimiento en el otro bucle para extraer la máxima potencia fotovoltaica. El sistema fotovoltaico está conectado con la carga a través del convertidor elevador DC-DC electrónico de potencia. Primero se deriva un modelo matemático del convertidor elevador y, en base al modelo derivado, se formula un SMC para controlar los pulsos de puerta del interruptor del convertidor elevador. La estabilidad del sistema de circuito cerrado se verifica mediante el teorema de estabilidad de Lyapunov. El esquema de control propuesto se prueba bajo diferentes niveles de irradiancia y los resultados de la simulación se comparan con el controlador clásico proporcional integral derivado (PID). El SMC clásico describe fenómenos indeseables como el parloteo, inherente a él, que causa pérdidas de energía y calor. En la siguiente parte de esta tesis, se analiza el diseño del controlador de modo deslizante adaptativo (ASMC) para el sistema fotovoltaico propuesto. El control adoptado se ejecuta utilizando un ASMC y la mejora se actualiza utilizando un algoritmo de optimización MPPT del Método de búsqueda de patrón mejorado (IPSM). Se utiliza un IPSM MPPT para generar el voltaje de referencia para controlar el controlador ASMC subyacente. Se ha realizado una comparación con otros dos algoritmos de optimización, a saber, Perturb \ Observe (P&O) y Particle Swarm Optimization (PSO) con IPSM para MPPT. Como estrategia no lineal, la estabilidad del controlador adaptativo está garantizada mediante la realización de un análisis de Lyapunov.
The increasing energy demands, depleting fossil fuels, and increasing global warming due to carbon emission has arisen the need for an alternate, overall efficiency, and environment-friendly energy system. Solar energy is considered to be one of the most inexhaustible forms of energy in this universe, but it has the problem of low efficiency due to varying environmental conditions. Solar panel exhibits nonlinear behavior under real climatic conditions and output power fluctuates with the variation in solar irradiance and temperature. Changing weather conditions and nonlinear behavior of PV systems pose a challenge in the tracking of varying maximum PowerPoint. Hence, to continuously extract and deliver the maximum possible power from the PV system, under given environmental conditions, the maximum power point tracking (MPPT) control strategy needs to be formulated that continuously operates the PV system at its MPP. A robust nonlinear controller is required to ensure MPPT by handling nonlinearities of a system and making it robust against changing environmental conditions. Sliding mode control (SMC) is extensively used in non-linear control systems and has been implemented in photovoltaic systems (PV) to track MPP. SMC is robust against disturbances, model uncertainties, and parametric variations. It depicts undesirable phenomena like chattering, inherent in it causing power and heat losses. In this thesis, first, an integer order SMC controller is formulated for extracting maximum power from a solar PV system under variable climatic conditions employing the perturb and observe (P&O) MPPT scheme for the proposed stand-alone PV system. The proposed system consists of two loops schemes, namely the searching loop and the tracking loop. P&O MPPT is utilized in the searching loop to generate the reference signal and a tracking SMC controller is utilized in the other loop to extract the maximum PV power. PV system is connected with load through the power electronic DC-DC boost converter. A mathematical model of the boost converter is derived first, and based on the derived model, an SMC is formulated to control the gate pulses of the boost converter switch. The closed-loop system stability is verified through the Lyapunov stability theorem. The proposed control scheme is tested under varying irradiance levels and the simulation results are compared with the classical proportional integral derivative (PID) controller. Classical SMC depicts undesirable phenomena like chattering, inherent in it causing power and heat losses. In the next part of this thesis, the design of the adaptive sliding mode controller (ASMC) is discussed for the proposed PV system. The adopted control is executed utilizing an ASMC and the enhancement is actualized utilizing an Improved Pattern Search Method (IPSM) MPPT optimization algorithm. An IPSM MPPT is used to generate the reference voltage in order to command the underlying ASMC controller. Comparison with two other optimization algorithms, namely, a Perturb & Observe (P&O) and Particle Swarm Optimization (PSO) with IPSM for MPPT has been conducted. As a non-linear strategy, the stability of the adaptive controller is guaranteed by conducting a Lyapunov analysis. The performance of the proposed control architectures is validated by comparing the proposals with that of the well-known and widely used PID controller. The simulation results validate that the proposed controller effectively improves the voltage tracking, system power with reduced chattering effect, and steady-state error. A tabular comparison is provided at the end of each optimization algorithm category as a resume quantitative comparison. It is anticipated that this work will serve as a reference and provides important insight into MPPT control of the PV systems.
Pizarro, Ramón, and Guillermo Mella. "Brokers de energía en Chile energy advisory." Tesis, Universidad de Chile, 2018. http://repositorio.uchile.cl/handle/2250/168296.
Full textPizarro, Ramón, [Parte I], Mella, Guillermo, [Parte II]
A partir de la publicación de la Ley 20.805 del Ministerio de Energía, clientes de energía eléctrica podrán optar por un régimen de tarifa libre, en detrimento de una tarifa regulada, por las empresas distribuidoras de energía del mercado local. El cambio supuso la creación de una oportunidad de negocio e involucró al sector energético, a los encargados de la generación (Generadoras), a los encargados de la transmisión y encargados de la distribución (Empresas Eléctricas). El proyecto de "Brokers de Energía en Chile”, asume como desafío el asesoramiento estratégico y técnico, para usuarios susceptibles de cambiarse de tarifas reguladas a tarifas libres de mercado, dado que para muchas empresas las materias energéticas, no son el core de sus negocios. El servicio será suministrado por la sociedad Energy Advisory Ltda., con marca comercial “Energi-A”, que prestará servicios de asesorías de eficiencia energética a compañías comerciales, industriales, empresas de servicios y explotación de materias primas, ubicadas en la I, II y Región Metropolitana del país. El objetivo de Energi-A, es alcanzar en el plazo de 3 años, ingresos por sobre los MM$222, que es el proyectado de ingresos de contratos solo con 7 nuevos clientes que tenga la capacidad conectada mínima que indica la ley. El ingreso corresponde al cobro de la comisión del servicio de asesoría, a un promedio del 12% con una proyección a 12 meses, sobre los ahorros de eficiencia en materia energética del cliente. Con una inversión para capital de trabajo de MM$28, principalmente destinado a soportar la operación los primeros años del proyecto. Por la naturaleza del servicio de asesorías en eficiencia energética, el proyecto no presenta riesgos críticos en la propuesta del plan estratégico. Por lo tanto, la invitación es a sumarse a un proyecto que promueve “La eficiencia energética”, que reviste una importancia crítica para alcanzar mejores usos de recursos y aporta un gramo de arena a combate por el cambio climático.
Yan, Zuanhong. "Control of fluctuating renewable energy sources : energy quality & energy filters." Thesis, University of Birmingham, 2018. http://etheses.bham.ac.uk//id/eprint/8568/.
Full textLi, Ka-ming, and 李家明. "Energy audit for building energy conservation." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1995. http://hub.hku.hk/bib/B31253192.
Full textMandryka, V. "Energy efficiency in energy consumption systems." Thesis, Sumy State University, 2015. http://essuir.sumdu.edu.ua/handle/123456789/40670.
Full textLi, Ka-ming. "Energy audit for building energy conservation /." Hong Kong : University of Hong Kong, 1995. http://sunzi.lib.hku.hk/hkuto/record.jsp?B14723244.
Full textLong, Courtney. "Energy." Thesis, Wichita State University, 2010. http://hdl.handle.net/10057/3316.
Full textThesis (M.Mus.)--Wichita State University, College of Fine Arts, Dept. of Music
The score is in C. Energy is a four movement, continuous piece. The movements are: I. Upward -- II. Forward -- III. Circular -- IV. Namaste. Each movement intends to convey the different energies created in certain yoga positions.
Kořista, Ján. "Energetický audit." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2016. http://www.nusl.cz/ntk/nusl-240419.
Full textFavre-Perrod, Patrick. "Hybrid energy transmission for multi-energy networks /." Zürich : ETH, 2008. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=17905.
Full textMuñiz, García Claudia. "Rapid Energy Transfer to an Energy Buffer." Thesis, KTH, Kommunikationssystem, CoS, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-91941.
Full textDetta examensarbete introducerar en ny teknologi som är applicerbar till de flesta mobila och portabla elektriska apparater då dessa behöver energi för att fungera. Detta arbete försöker klippa den sista ledningen den som leder till den primära kraftkällan. Med andra ord, är denna teknik en snabb och effektiv trådlös energiöverföring genom ett starkt, fokuserat närbeläget magnetfält. Tack vare magnetfältets kraftiga dämpning undviks interferens med intilliggande kommunikationssystem eller personskador. Denna energi är överförd till, och lagras inuti en bärbar apparat där endast en liten och enkel sekundärkrets har placerats. Examensarbetsprojektet påbörjades med skapandet av en inledande SPICE datormodell. Modellen möjliggjorde ett enkelt och snabbt sätt att testa både konvergens och genomförbarhet av topologin samtidigt som designen utvecklades från den välkända och vitt använda Switch Power Supply-teknologin till den detaljerade designen och implementationen av prototypen. Modellen stöttade samtidigt den iterativa processen av test och optimering. Alla faser är utförligt beskrivna i rapporten och arbetet visar både teoretiskt och praktiskt att denna idé är genomförbar och möjliggör kraftöverföring.
Riou, Marie-Ève. "Energy Compensation Following Exercise-Induced Energy Expenditure." Thesis, Université d'Ottawa / University of Ottawa, 2014. http://hdl.handle.net/10393/31292.
Full textCauchi, Savona Silvano. "Energy absorbing composites for crash energy management." Thesis, Queen Mary, University of London, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.409297.
Full textGkinis, Spyridon. "Modelling energy markets and pricing energy derivatives." Thesis, City University London, 2003. http://openaccess.city.ac.uk/8405/.
Full textSanchez-Friera, Paula. "Total energy calculations from self-energy models." Thesis, University of York, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.369299.
Full textPukhkaiev, Dmytro. "Energy-efficient Benchmarking for Energy-efficient Software." Master's thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-192604.
Full textЛитвиненко, Олексій Семенович, Алексей Семеновмч Литвиненко, Oleksii Semenovych Lytvynenko, and N. Bunkovska. "Energy management as constituent of energy saving." Thesis, Видавництво СумДУ, 2006. http://essuir.sumdu.edu.ua/handle/123456789/8503.
Full textYeremenko, А. "Solar energy is an energy alternative source." Thesis, Sumy State University, 2017. http://essuir.sumdu.edu.ua/handle/123456789/62568.
Full textЛепетюха, Л. В. "Energy saving and alternative sources of energy." Thesis, Вид-во СумДУ, 2007. http://essuir.sumdu.edu.ua/handle/123456789/17475.
Full textDu, Sijun. "Energy-efficient interfaces for vibration energy harvesting." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/270359.
Full textSchumacher, Katja. "Innovative energy technologies in energy-economy models." Doctoral thesis, Humboldt-Universität zu Berlin, Wirtschaftswissenschaftliche Fakultät, 2007. http://dx.doi.org/10.18452/15654.
Full textEnergy technologies and innovation are considered to play a crucial role in climate change mitigation. Yet, the representation of technologies in energy-economy models, which are used extensively to analyze the economic, energy and environmental impacts of alternative energy and climate policies, is rather limited. This dissertation presents advanced techniques of including technological innovations in energy-economy computable general equilibrium (CGE) models. New methods are explored and applied for improving the realism of energy production and consumption in such top-down models. The dissertation addresses some of the main criticism of general equilibrium models in the field of energy and climate policy analysis: The lack of detailed sectoral and technical disaggregation, the restricted view on innovation and technological change, and the lack of extended greenhouse gas mitigation options. The dissertation reflects on the questions of (1) how to introduce innovation and technological change in a computable general equilibrium model as well as (2) what additional and policy relevant information is gained from using these methodologies. Employing a new hybrid approach of incorporating technology-specific information for electricity generation and iron and steel production in a dynamic multi-sector computable equilibrium model it can be concluded that technology-specific effects are crucial for the economic assessment of climate policy, in particular the effects relating to process shifts and fuel input structure. Additionally, the dissertation shows that learning-by-doing in renewable energy takes place in the renewable electricity sector but is equally important in upstream sectors that produce technologies, i.e. machinery and equipment, for renewable electricity generation. The differentiation of learning effects in export sectors, such as renewable energy technologies, matters for the economic assessment of climate policies because of effects on international competitiveness and economic output.
Zou, Fan. "Energy Saving Curtain : ENERGY INVENTORY AND CONSERVATION POSSIBILITIES." Thesis, University of Gävle, Department of Technology and Built Environment, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-398.
Full textThis paper presents the energy saving curtains, in order to make the
consumers be more aware of the energy efficiency of the energy saving
curtains, the paper gave related analysis and conclusions.
The work was performed by using the Parasol Program, developed by Lunds University, Sweden. The Program is used for quantifying the influence of window size, glass type, textile type, wall thermal insulation and sun shading on annual energy use and indoor thermal comfort. The results which are obtained from the calculations are applicable to similar climatic and environment conditions. Calculations were performed to investigate the potential for using sunshade devices to reduce annual energy demand for cooling and heating. Different materials and dimensions of the energy saving
curtain are used as variables in the analysis. The results indicated that for the current climatic conditions and other related factors, the total reduction rate of the annual energy consumption of office used buildings in Stockholm is estimated generally 20% -30% lower comparing to those buildings without energy saving curtain system. That means at least 20% of energy cost can be saved by the energy saving curtain system.
Thorburn, Karin. "Electric Energy Conversion Systems : Wave Energy and Hydropower." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-7081.
Full textKarimu, Amin. "Essays on Energy Demand and Household Energy Choice." Doctoral thesis, Umeå universitet, Nationalekonomi, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-79713.
Full textElmes, John. "MAXIMUM ENERGY HARVESTING CONTROL FOROSCILLATING ENERGY HARVESTING SYSTEMS." Master's thesis, University of Central Florida, 2007. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3400.
Full textM.S.E.E.
School of Electrical Engineering and Computer Science
Engineering and Computer Science
Electrical Engineering MSEE
Mohd, Amin Mohd Farid. "Energy planning and energy policy analysis for Malaysia." Thesis, University of Sussex, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.360504.
Full textBlack, Alison E. "Dietary energy intake measurements : validations against energy expenditure." Thesis, University of Ulster, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.322419.
Full textBetancur, Alejandro. "Energy Made Visible: Behavioral Effects fo Social Energy." Thesis, Boston College, 2005. http://hdl.handle.net/2345/401.
Full textAbstract Energy is an emerging concept in social psychology. Baumeister et. al., likening energy to a muscle, have defined exertion of self control as an energy depleting behavior. Energy depletion is measured by reduced performance on a subsequent self-control task. In contrast, Canavan's work on social energy focuses on energy generation and replenishment. Social energy is produced when two or more people are intrinsically interested in the same thing and form a satisfying relationship over this interest. Individuals high in social energy exert more effort, persist longer, and perform better. The present study was conducted in a 2x2 ANOVA design with Social Energy and Depletion as the independent variables and persistence and performance as the dependent variables. Participants worked in groups of two or three groups and were randomly assigned to conditions. In High Social Energy, they imagined managing The Beatles. In the No Social Energy, they imagined managing a cover band playing Beatle's songs. The participants then performed either a depleting or non-depleting proofreading task. Afterwards, the dependent variables were assessed in several tasks: a handgrip task and a measure of creativity and persistence. The results indicate: (1) no significant effect of depletion on the handgrip task and (2) no significant effect of social energy on any of the behavioral measures (i.e. handgrip task or creativity measure). In conclusion, the results did not support either the Depletion or Social Energy behavioral predictions. In the questionnaire data differences between Social Energy and No Social Energy showed significantly higher energy states, social energy, intrinsic motivation, flow, and most important more effort and hard work. The study does improve upon former Social Energy studies in terms of its conceptualization because it successfully manipulated No Social Energy and presented a more sophisticated conceptualization of energy. The manipulations of Social Energy and Depletion interfered with each other making it impossible to test the hypotheses. Paper to be presented at the annual Psychology Honors Conference, Psychology Department, Boston College, Chestnut Hill, Massachusetts, May 2005
Thesis (BS) — Boston College, 2005
Submitted to: Boston College. College of Arts and Sciences
Discipline: Psychology
Discipline: College Honors Program
Balouchi, Farouk. "Footfall energy harvesting : footfall energy harvesting conversion mechanisms." Thesis, University of Hull, 2013. http://hydra.hull.ac.uk/resources/hull:8433.
Full textBembry, Walter T. IV. "Emergency thermal energy storage: cost & energy analysis." Thesis, Kansas State University, 2011. http://hdl.handle.net/2097/13086.
Full textDepartment of Mechanical Engineering
Donald Fenton
The need to store and access electronic information is growing on a daily basis as more and more people conduct business and personal affairs through email and the internet. To meet these demands, high energy density data centers have sprung up across the United States and around world. To ensure that vital data centers run constantly, proper cooling must be maintained to prevent overheating and possible server damage from occurring. Emergency cooling systems for such systems typically utilize traditional batteries, backup generator, or a combination thereof. The electrical backup provides enough power to support cooling for essential components within the data centers. While this method has shown to be reliable and effective, there are several other methods that provide reliable emergency cooling at a fraction of the cost. This paper address the lack of information regarding the initial, operation, and maintenance costs of using Thermal Energy Storage (TES) tanks for emergency cooling. From research and various field examples, five emergency cooling system layouts were designed for various peak cooling loads. Looking at the different cooling loads, components, and system operations an economic evaluation of the system over a 20 year period was conducted. The economic analysis included the initial and maintenance costs of each system. In an effort to better understand power consumption of such systems and to help designer’s better estimate the long term costs of TES tanks systems, five layouts were simulated through a program called TRNSYS developed for thermal systems. To compare against current systems in place, a benefit to cost ratio was done to analyze TES versus a comparable UPS. The five simulated systems were one parallel pressurized tank, one parallel and one series atmospheric tank, one parallel low temperature chilled water, and one series ice storage tank. From the analysis, the ice storage and pressurized systems were the most cost effective for 1 MW peak cooling loads. For 5 MW peak cooling loads the ice storage and chilled water systems were the most cost effective. For 15 MW peak loads the chilled water atmospheric TES tanks were the most cost effective. From the simulations we concluded that the pressurized and atmospheric systems consumed the least amount of power over a 24 hour period during a discharge and recharge cycle of the TES tank. From the TRNSYS simulations, the ice storage system consumed 22 – 25% more energy than a comparable chilled water system, while the low temperature storage system consumed 6 – 8% more energy than the chilled water system. From the benefit-cost-ratio analysis, it was observed that all systems were more cost effective than a traditional battery UPS system of comparable size. For the smaller systems at 1 MW the benefit-cost-ratio ranged between 0.25 to 0.55, while for larger systems (15 MW) the ratio was between 1.0 to 3.5 making TES tanks a feasible option for providing emergency cooling for large and small systems.
Sani, Hassan Abubakar. "Management of distributed energy resources in energy systems." Thesis, Cardiff University, 2016. http://orca.cf.ac.uk/100111/.
Full textJasonarson, Ivar Kristinn. "Digitalization for Energy Efficiency in Energy Intensive Industries." Thesis, KTH, Energiteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-276987.
Full textIndustrin är på väg in i en fjärde industriell revolution (Industri 4.0). Revolutionen möjliggörs av framsteg inom informations- och kommunikationsteknologier (digitalisering) och koncept som internet av saker och cyberfysiska system. Industri 4.0 förväntas ha en stor påverkan på tillverknings- och processindustrin, vilket kommer att förändra hur produkter utvecklas, produceras och säljs. Industri 4.0 är dock ett nytt koncept och dess effekter är fortfarande osäkra. I samband med att en allt strängare klimat- och energiagenda i Sverige sätter press på industrisektorn, är det viktigt att sektorn utnyttjar den fulla potentialen som Industri 4.0 kan bidrag med för en ökad hållbarhet. Det här examensarbetet analyserar det nuvarande läget för digitalisering inom de svenska energiintensiva industrierna (dvs. massa och pappers-, stål- och kemisk industrin) och hur det kan påverka energieffektiviteten i sektorn. Studien genomfördes med hjälp av kvalitativa forksningsmetoder. En litteraturstudie och fördjupade intervjuer med anställda inom branscherna genomfördes. Resultaten visar att trots att digitalisering anses vara viktig för de svenska energiintensiva industriernas framtida konkurrenskraft, anses sektorns digitala mognad inte vara hög. Digital teknik kan öka energieffektiviteten på ett antal olika sätt (t.ex. genom bättre optimeringsverktyg, ökad tillgänglighet av processer och effektivare underhållshantering). Det finns dock ingen tydlig koppling mellan digitala strategier och energieffektivitetsåtgärder i de energiintensiva industrierna i Sverige. Dessutom anses energieffektivitet inte vara den främsta drivkraften för att implementera digitala teknologier, utan anses snarare vara en positiv bieffekt. För att påskynda implementeringen av digital teknik är det viktigt att fortsätta stötta forskningen inom området och uppmuntra till ett närmare samarbete mellan olika aktörer samt bemöta utmaningar som osäkerheten kring framtida avkastningar på investeringar och frågor relaterade till datasäkerhet och ägande.
Afrane-Okese, Yaw. "Domestic energy use database for integrated energy planning." Master's thesis, University of Cape Town, 1998. http://hdl.handle.net/11427/18688.
Full textRazmjoo, Ali (Armin). "Measuring energy sustainability by using energy sustainability indicators." Doctoral thesis, Universitat Politècnica de Catalunya, 2021. http://hdl.handle.net/10803/671796.
Full textEl objetivo principal de esta tesis es investigar la sostenibilidad energética en los países en desarrollo utilizando indicadores efectivos. Como es sabido, problemas como el calentamiento global y el consumo ineficiente de energía conducirán a serios problemas en el futuro del mundo y en particular en los países en desarrollo. Aquellos países que cuentan con políticas adecuadas y acciones efectivas por parte de los legisladores y expertos en energía pueden prevenir estos problemas con confianza. Por estas razones, la presente tesis se ha centrado en desarrollar indicadores que puedan medir el grado de sostenibilidad energética para lograr la sostenibilidad energética que los países analizaron. En este sentido, la tesis comienza a investigar el método del Índice de Desarrollo de Energía Sostenible (SEDI) y mejora este método al encontrar y evaluar los indicadores efectivos para mejorar y completar la metodología SEDI. En este sentido, se realizó un análisis numérico de 12 países. Siguiendo la metodología, se proponen nuevos indicadores asociados con la energía en línea con el Hábitat III y los ODS de la ONU. Además, se analizan las estrategias apropiadas para combinar los diferentes objetivos de las Naciones Unidas y se eligen los indicadores para proporcionar el mejor rendimiento del índice. Para esta investigación, es necesario analizar muchos datos relacionados y encontrar nuevos indicadores basados en estos datos que puedan ser obtenidos y aplicados por los formuladores de políticas y expertos en energía para su aplicación en los países en desarrollo debido al alto porcentaje del sector de consumo de energía en estas comunidades. Por lo tanto, los principales hallazgos de esta tesis son indicadores propuestos para mejorar la calidad de vida de los habitantes de diferentes áreas del mundo con respecto a los diferentes aspectos de la energía, como el acceso a la energía, la energía asequible y el ahorro de energía. Para alcanzar estos objetivos, se necesita corregir las políticas, la evaluación de la sostenibilidad energética basada en los sistemas energéticos de un país, la estrecha colaboración de los encargados de formular políticas con los expertos en energía, utilizando indicadores efectivos, el equilibrio del suministro de energía, la equidad en el acceso a sostenibilidad energética y ambiental de las zonas urbanas y remotas. Estas acciones conducirán a lograr la sostenibilidad energética con confianza.
Gibbs, Vance Scott. "State building energy efficiency determination using energy audits." Birmingham, Ala. : University of Alabama at Birmingham, 2009. https://www.mhsl.uab.edu/dt/2009m/gibbs.pdf.
Full textCho, Yuljae. "Hybrid energy harvesting towards a sustainable energy system." Thesis, University of Oxford, 2017. http://ora.ox.ac.uk/objects/uuid:27495fce-c95f-4df9-a0e2-b380571b5fcd.
Full textČtrnáctý, Jaromír. "Energy Performance Contracting." Master's thesis, Vysoká škola ekonomická v Praze, 2009. http://www.nusl.cz/ntk/nusl-11032.
Full textBafana, Ramzi, and Zain Zulfiqar. "Solar Energy." Thesis, Blekinge Tekniska Högskola, Institutionen för tillämpad signalbehandling, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-2079.
Full textRamzi: +46723231353, +966561993488 Zain:
Murray, Malcolm Charles. "Semantic energy." Thesis, University of the Highlands and Islands, 2012. https://pure.uhi.ac.uk/portal/en/studentthesis/semantic-energy(4bcea30e-b1a9-4a94-9d08-eb537036e835).html.
Full textBull, Edward. "POTENTIAL ENERGY." Master's thesis, University of Central Florida, 2010. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2192.
Full textM.F.A.
Department of English
Arts and Humanities
Creative Writing MFA
Papchenko, O. "Free energy." Thesis, Сумський державний університет, 2013. http://essuir.sumdu.edu.ua/handle/123456789/33782.
Full textMelnik, E. S. "Geothermal energy." Thesis, Сумський державний університет, 2013. http://essuir.sumdu.edu.ua/handle/123456789/33764.
Full textЗолотова, Світлана Григорівна, Светлана Григорьевна Золотова, Svitlana Hryhorivna Zolotova, and D. S. Volovik. "Energy management." Thesis, Видавництво СумДУ, 2010. http://essuir.sumdu.edu.ua/handle/123456789/18382.
Full textКравченко, Наталія Олександрівна, Наталия Александровна Кравченко, Nataliia Oleksandrivna Kravchenko, and R. Lopatka. "Hydrogen Energy." Thesis, Видавництво СумДУ, 2011. http://essuir.sumdu.edu.ua/handle/123456789/13492.
Full textKaraganova, E., and E. Konchenko. "Alternative energy." Thesis, Вид-во СумДУ, 2005. http://essuir.sumdu.edu.ua/handle/123456789/13380.
Full textКосяненко, Н. Н. "Energy resources." Thesis, Вид-во СумДУ, 2007. http://essuir.sumdu.edu.ua/handle/123456789/17481.
Full textКравченко, Наталія Олександрівна, Наталия Александровна Кравченко, Nataliia Oleksandrivna Kravchenko, and I. Bodnar. "Ocean energy." Thesis, Видавництво СумДУ, 2011. http://essuir.sumdu.edu.ua/handle/123456789/13490.
Full textBahl-Moore, Liz. "Urban Energy." VCU Scholars Compass, 2015. http://scholarscompass.vcu.edu/etd/3678.
Full textHowland, Alexis (Alexis Blair). "The residential energy map : catalyzing energy efficiency through remote energy assessments and improved data access." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/81633.
Full textCataloged from PDF version of thesis.
Includes bibliographical references (p. 67-71).
Although energy efficiency has potential to be a significant energy resource in the United States, many energy efficiency projects continue to go unrealized. This is especially true in the residential sector, where efficiency programs, frequently administered by utilities, see very low participation rates. However, growing access to data and the growing prevalence of mapping technologies provide new avenues for introducing energy performance information in ways that could encourage increased energy efficiency implementation. Renters and homebuyers are increasingly using online interactive maps to inform their housing choices. If energy data is mapped or incorporated into an existing real estate map, energy efficiency could become a valued asset that influences housing decisions and encourages building upgrades by property owners. However, major obstacles remain in accessing the data necessary to create meaningful energy maps. Privacy is the most significant barrier to displaying building-level energy consumption and performance information. This thesis explores how an energy map could catalyze energy efficiency upgrades, specifically in the residential market. This research examines existing energy maps, existing energy assessment platforms and what data they use, and evaluates the state of energy data access in the United States. It seeks to answer what data is necessary to map building level energy performance, what policies are necessary to access that data, and how should energy information be displayed in a map for the most meaningful impact. This research suggests that State mandates may be necessary to access individual residential building energy data; that the Federal government should recommended a standardized platform, such as the Standard Energy Efficiency Data platform, to create a national standard for storing energy data and data taxonomy; and that an energy map will be most effective when displaying a relative energy performance score which could possibly be calculated from energy data and other publicly available building records.
by Alexis Howland.
M.C.P.
Fofana, Alpha, and Carl Mossberg. "Energy harvesting from ambient WiFi energy : A method of harvesting and measuring ambient WiFi energy." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-257860.
Full textMed den nuvarande utvecklingen inom trådlös teknik och IoT-domänen har efterfrågan på elektroniska applikationer med låg effekt ökat och en av utmaningarna är att hitta effektiva och hållbara sätt att driva dessa typer av enheter. Syftet med detta projekt var att undersöka frågan hur vi skördar radiovågsenergi och kan vi skörda tillräckligt mycket med energi för att den ska vara användbar i en applikation. I ett typiskt kontor finns fler källor till radiovågor, däribland WiFi som antas ha en hög nyttjandegrad. Projektet valde att inrikta sig på WiFi bandet och undersöka om det går att utvinna tillräckligt med energi där.Projektet strävade efter att leverera en färdig produkt med alla ingående delar, en antenn, en likriktare, en lagringsenhet och ett matchningsnätverk för att anpassa antenn och likriktare till varandra. För att undersöka hur mycket energi som finns att skörda gjordes först beräkningar och sedan mätningar i bland annat ett typiskt kontor. Det konstaterades att det rör sig om väldigt låga nivåer och betonas att de apparater som använder WiFi klarar av att känna av signaler som är långt mycket lägre än de som krävs för att kunna utvinna energi. Detta innebär alltså att apparaterna kan kommunicera felfritt samtidigt som energiinnehållet är så lågt att det inte går att utvinna någon energi.Projektet ägnar stor del åt att optimera den impedansmatchning som måste ske mellan antenn och likriktare för att största möjliga effektutbyte ska kunna ske. Basen är ett kretskort med ett typiskt impedansnätverk och genom beräkningar, simuleringar och experiment tas en prototyp fram. För att kunna analysera resultaten används en mikrokontroller som tar de analoga värdena, omvandlar dem till digitala och skickar dem till en PC för analys.Mätningar gjordes i en kontorsmiljö och den maximala mängden energi som gick att utvinna var 350 mJ på 24 timmar. Energin lagrades i en superkondensator och bedöms vara tillräcklig för att driva en lågenergisensor i ca 30 sekunder.