Дисертації з теми "170102 Industrial energy efficiency"
Оформте джерело за APA, MLA, Chicago, Harvard та іншими стилями
Ознайомтеся з топ-50 дисертацій для дослідження на тему "170102 Industrial energy efficiency".
Біля кожної праці в переліку літератури доступна кнопка «Додати до бібліографії». Скористайтеся нею – і ми автоматично оформимо бібліографічне посилання на обрану працю в потрібному вам стилі цитування: APA, MLA, «Гарвард», «Чикаго», «Ванкувер» тощо.
Також ви можете завантажити повний текст наукової публікації у форматі «.pdf» та прочитати онлайн анотацію до роботи, якщо відповідні параметри наявні в метаданих.
Переглядайте дисертації для різних дисциплін та оформлюйте правильно вашу бібліографію.
Nehler, Therese. "The Non-Energy Benefits of Industrial Energy Efficiency : Investments and Measures." Licentiate thesis, Linköpings universitet, Energisystem, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-131831.
Повний текст джерелаNorman, Jonathan. "Industrial energy use and improvement potential." Thesis, University of Bath, 2013. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.577741.
Повний текст джерелаKunytsia, Maksym. "Energy audit of an industrial facility,Hagby waste management plant." Thesis, KTH, Industriell ekologi, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-192303.
Повний текст джерелаSoua, Ridha. "Wireless sensor networks in industrial environment : energy efficiency, delay and scalability." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2014. http://tel.archives-ouvertes.fr/tel-00978887.
Повний текст джерелаParamonova, Svetlana. "Re-viewing industrial energy-efficiency improvement using a widened system boundary." Doctoral thesis, Linköpings universitet, Energisystem, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-132777.
Повний текст джерелаFörbättrad industriell energieffektivitet är viktig för att nå målen i EU:s strategi för ökad hållbarhet. Att energieffektivisera är inte prioriterat inom företagen och potentialen är därför stor. Denna paradox kallas för energieffektiviseringsgapet och förklaras av hinder för energieffektivisering. Det låga intresset för energifråga beror också på att den inte ligger inom företagens kärnkompetens och inte uppfattas som strategisk. De styrmedel som syftar till att överbrygga gapet har hittills handlat om snabbare spridning av energieffektiv teknik. Detta är inte tillräckligt och gapet kan utvidgas genom att inkludera energiledningsåtgärder. För att överbrygga det utvidgade gapet behövs ett utvidgat systemperspektiv. Syftet med denna avhandling är att undersöka den industriella energieffektiviseringspotentialen och möjligheter för att nå den genom att utvidga systemgränsen. I denna avhandling kvantifierades det utvidgade gapet med hjälp av kategorisering av energidata som inkluderar de mest elintensiva svenska industriföretagen. Resultaten visar att teknikrelaterade åtgärder utgör 61% av energibesparingar medan energiledningsrelaterade åtgärder står för 38%. Dessutom kan energieffektivisering genom energiledningsrelaterade åtgärder förbättras med lägre kostnader. Energieffektiviseringspotentialer för olika nivåer av industriella elmotorsystem kvantifierades och det visar sig att den högsta potentialen ligger i de åtgärder som inkluderar personaldeltagandet och optimering av rutiner. Det bevisar att de vanliga metoder som baseras på tekniska lösningar inte till fullo kan lösa energiparadoxen. Utvärderingen av det svenska energikartläggningsprogrammet för små och medelstora företag (SMF) som gjordes i denna avhandling visar en brist på kunskap inom energiområdet bland de företagen. Implementeringsgraden av åtgärder föreslagna i kartläggningar står för endast 54%, medan det också finns ett behov av att nå de SMF som inte omfattas av programmet. En internationell studie av energieffektiviseringspotentialen i SMF indikerade att energiledning inte prioriteras bland dessa överhuvudtaget. För att överbrygga det utvidgade gapet måste externa kunskaper om hur man arbetar med energi stanna inom företagen. För detta behövs metoder som baseras på långsiktighet och systematisk syn på komplicerade industriella processer. Metoderna bör vara universella och tillämpas i en särskild kontext. Ett exempel på en sådan metod för stora företag presenteras i avhandlingen men att tillämpa den på SMF är problematiskt på grund av begränsade resurser. Deltagandet i nätverk för energieffektivisering kan vara ett sätt att initiera energiarbetet inom SMF på en kontinuerlig basis. Dessutom bevisar avhandlingen ett behov av skapandet av en gemensam taxonomi för energidata samt av en central portal där data kan rapporteras och lagras. Detta skulle förenkla övervakning av slutenergianvändning, kontroll av åtgärdsimplementering samt jämförelse mellan processer, företag och branscher.
Carter, Shane. "Industrial energy efficiency: Using data analytics to monitor excess pump use." Thesis, Carter, Shane (2016) Industrial energy efficiency: Using data analytics to monitor excess pump use. Masters by Coursework thesis, Murdoch University, 2016. https://researchrepository.murdoch.edu.au/id/eprint/40395/.
Повний текст джерелаBrus, Alexander. "Validation of energy efficiency requirements for machine tools and industrial washing machines." Thesis, KTH, Energiteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-256062.
Повний текст джерелаProduktionsutrustning står för en stor andel av energianvändningen inom industrin. Men än så länge finns det inget standardiserat sätt att kravställa energieffektivitet vid inköp av nya maskiner. Scania har därför börjat implementera krav på energieffektivitet i deras inköpsprocess för produktionsutrustning. Som en del av detta behövs ett sätt att validera att de ställda kraven också uppfylls. Denna studie undersöker hur krav på energieffektivitet kan valideras på ett användarvänligt och tidseffektivt sätt. Först kartläggs de energieffektivitetskrav som ställs av Scania och lagstiftning. Dessa krav definieras sedan så tydligt som möjligt för att möjliggöra en validering. Två mätningar av energianvändning på komponentnivå på en bearbetningsmaskin och en industriell tvättmaskin analyseras. Sedan utförs en kostnadsanalys för att avgöra ett tidsspann som kan sägas vara tidseffektivt för en valideringsprocess. Resultaten från detta används sedan för att utveckla en valideringsmetod och ett interaktivt protokoll. Denna metoden testas sedan genom en simulerad validering. Den föreslagna metoden består av två delar, en inspektion och en mätning. Inspektionen är endast visuell och validerar kraven på effektivitetsklass på motorer och pumpar, samt krav på specifik utrustning. Mätningen utförs genom att köra maskinen genom fyra olika maskinlägen i åtta steg och validerar krav på när energi används, och hur mycket som används. Den föreslagna metoden validerar alla krav på energieffektivitet som Scania ställer på bearbetningsmaskiner och industriella tvättmaskiner. Den kan utföras under ett tidsspann som är mycket kortare än gränsen för vad som är kostnadseffektivt. Den föreslagna metoden kan validera krav på energianvändning från elektriska komponenter, tryckluftsanvändning, och visuellt bekräfta att kravställd utrustning är på plats och vissa egenskaper baserat på märkningen. Metoden kommer också att kunna validera alla nya krav på energianvändning från elektriska komponenter, vilket innebär att den enkelt kan appliceras på andra typer av produktionsutrustning.
Gebremeskel, Anteneh. "New Service Development : Energy Efficiency Consultancy Service." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-12907.
Повний текст джерелаRohdin, Patrik. "Energy efficiency and ventilation in Swedish industries barriers, simulation and control strategy." Doctoral thesis, Linköpings universitet, Energisystem, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-15531.
Повний текст джерелаSandberg, Maria. "Efficient treatment of forest industrial wastewaters : Energy efficiency and resilience during disturbances." Doctoral thesis, Karlstads universitet, Fakulteten för teknik- och naturvetenskap, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-13031.
Повний текст джерелаMcKenna, Russell. "Industrial energy efficiency : interdisciplinary perspectives on the thermodynamic, technical and economic constraints." Thesis, University of Bath, 2009. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.507763.
Повний текст джерелаImran, Shabbir. "Evaluation of energy saving and energy efficiency potentials in industrial processes through energy benchmarking and implementation of cogeneration technologies." Thesis, University of the West of Scotland, 2017. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.736953.
Повний текст джерелаApeaning, Raphael Wentemi. "Energy Efficiency and Management in Industries : a case study of Ghana’s largest industrial area." Thesis, Linköpings universitet, Energisystem, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-77558.
Повний текст джерелаRasmussen, Josefine. "The Investment Process for Capital Investments : The case of industrial energy-efficiency investments and non-energy benefits." Licentiate thesis, Linköpings universitet, Företagsekonomi, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-126367.
Повний текст джерелаLockhart, Robert W. "Simulation and evaluation of energy efficiency programs, case study of five industrial programs." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0026/MQ51398.pdf.
Повний текст джерелаScarrow, Ryan Matthew. "Uncovering the Energy Efficiency of the Post-Industrial World: An Analysis of Ecological Factors in Energy Use Across Nations, 1960-2007." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1286987799.
Повний текст джерелаTriebs, Thomas Peter. "The impact of institutional change on firm efficiency : three applications to energy market reform." Thesis, University of Cambridge, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.609058.
Повний текст джерелаFripp, R. N. "Design of digital controller for multivariable plants with actuator failures." Thesis, University of Salford, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.239978.
Повний текст джерелаSimanic, Branko. "Energy Auditing and Efficiency in a Chain Hotel : the Case of Scandic, Järva Krog." Licentiate thesis, KTH, Tillämpad termodynamik och kylteknik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-32942.
Повний текст джерелаQC 20110427
Cai, Zhichang. "From energy efficiency to integrated sustainable urbanism in residential development in China." Licentiate thesis, KTH, Industriell ekologi, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-25233.
Повний текст джерелаQC 20101013
Thollander, Patrik. "Towards Increased Energy Efficiency in Swedish Industry : Barriers, Driving Forces & Policies." Doctoral thesis, Linköpings universitet, Energisystem, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-14907.
Повний текст джерелаIndustriell energieffektivisering är ett av de viktigaste sätten att reducera hotet om en globaluppvärmning. En högre relativ elanvändning, i jämförelse med europeiska konkurrenter, tillsammans med stigande energikostnader beroende av stigande energipriser för den svenskaindustrin, riskerar leda till försämrad lönsamhet och försämrad konkurrenskraft. Det är såledesav stor vikt att främja energieffektivisering, exempelvis genom olika typer av styrmedel. Lönsamma energieffektiviseringsåtgärder genomförs emellertid inte alltid, till följd av olikahinder för energieffektivisering. För att kunna formulera precisa styrmedel är det därför avstor vikt att dessa hinder som förhindrar implementering av energieffektiviserande åtgärder,identifieras. Det är också av stor vikt att identifiera drivkrafterna. Syftet med denna avhandling är att analysera industriella energisystem och mera specifikt studera faktorer somfrämjar och förhindrar effektiv slutanvändning av energi i svensk industri. Resultaten visar att hotet om stigande energikostnader, exempelvis beträffande elektricitet,både för icke energiintensiv och för energiintensiv svensk tillverkningsindustri, kan reduceraskraftigt om energieffektiv teknik implementeras. Medan åtgärder i icke energiintensiv industrifrämst är relaterade till stödprocesser så visar sig åtgärderna i den studerade svenska energiintensiva gjuteriindustrin vara relaterade till både stöd- och produktionsprocesser. I fallstudierna beträffande hinder och drivkrafter visade sig de största hindren vara - med storavariationer mellan fallen - tekniska risker såsom risk för produktionsstörningar och avbrott; brist på tid/andra prioriteringar; brist på kapital; kostnader för produktionsstörningar; ickeenergirelaterade investeringar prioriteras högre; tekniken passar ej för företaget;svårigheter/kostnader att erhålla korrekt information beträffande energianvändningen av deninköpta utrustningen; och brist på budgetmedel. De största drivkrafterna var, utöver kostnadsminskningar till följd av minskad energianvändning, förekomsten av en långsiktigenergistrategi och en eldsjäl. Drivkrafterna varierade inte, till skillnad mot hindren, så mycketmellan de olika undersökta fallen. Beslutsstöd såsom exempelvis optimering har visat sig kunna ge ökad information vid störremer kapitalintensiva investeringar i energiintensiva små- och medelstora företag. Vidare har energianalyser visat sig vara ett effektivt sätt, i termer av besparad kWh per statligt insattkrona, att ge industrin information beträffande möjliga energieffektiviserande åtgärder. Resultat från avhandlingen indikerar att ett stöd gentemot icke energiintensiva och små och medelstora företag framförallt bör inkludera statligt finansierade energianalyser med denlokala energirådgivaren som en deltagande aktör.
Godoi, José Maria Alves. "Eficiência energética industrial: um modelo de governança de energia para a indústria sob requisitos de sustentabilidade." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/86/86131/tde-10082011-002253/.
Повний текст джерелаLife conditions on Earth are being changed by ways still unknown to man. Energy efficiency is one of the strategies to mitigate climate change and to improve quality of life. As manufacturing is the greatest energy user, this work studies industrial energy efficiency, examines the energy and sustainability issue, its costs, the evolution of the regulatory framework, the development of energy rationalizing programs and other relevant market forces in Brazil, as those resulting from the competitive dynamic etc. Finally, the work defines energy management, its control instruments and, based on corporate governance concepts, proposes an energy governance model for manufacturing under sustainability requirements.
Bueno, Rosete Isabel. "Energy Audit of an industrial building in Sweden : Case study of a CNC processed components’ producer company." Thesis, Högskolan i Gävle, Energisystem, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-27061.
Повний текст джерелаThiel, Dennis. "Reducing industrial energy costs through energy efficiency measures in the South African foundry industry - evaluation and opportunities of a South African foundry." Master's thesis, University of Cape Town, 2016. http://hdl.handle.net/11427/24288.
Повний текст джерелаKolks, Giacomo, and Jürgen Weber. "Modiciency - Efficient industrial hydraulic drives through independent metering using optimal operating modes." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-199423.
Повний текст джерелаDudarev, Ivan. "Development and Implementation of Energy Savings and Energy Management Methodology in an Industrial Enterprise." Doctoral thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-234357.
Повний текст джерелаSalazar, Marlon Bruno. "Demanda de energia na indústria brasileira: efeitos da eficiência energética." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/11/11132/tde-15052012-094631/.
Повний текст джерелаThe conservation of energy, specifically energy efficiency is gaining importance lately in Brazil and the world due environmental impacts that intensive use of energy generates to the environment and for the fact that the supply of energy, mainly derived from nonrenewable sources, is becoming increasingly scarce. Studies which approach the impacts that efficiency gains can generate in terms of cost and energy conservation and, therefore, to reduce the effects of industrial activity on the environment are gaining importance. This work had as its main motivation to determine the impact of energy efficiency in energy demand of Brazilian industry. For this we used two complementary methodologies to discourse on the subject. First, the energy intensity was decomposed into two distinct effects: Intensity effect and Structural effect. The results suggest that the Intensity effect was mainly responsible for the loss of efficiency in energy used by industry. As the Intensity Effect is an important proxy for the Energy Efficiency, we attempted to determine the impact of energy consumption in Brazilian industry. Other variables were also used to compose the function of energy demand, such as industrial GDP, weighted average prices of different energy sources and the level of salaries paid in the industry. The results suggest that a 1% increase in the intensity effect has an impact of 0.297% in industrial energy consumption. We also sought to pursue the determinants of Energy Efficiency. For this purpose, we used as explanatory variables the Net Fixed Capital Formation as a proxy of the investment made by the industry, the Use of Installed Capacity as an indicator of excess or industrial underused and finally the Real Exchange Rate, as most energy-intensive industrial sectors are also characterized by a strong opening to foreign trade. The results suggest that increased use of installed capacity implies the loss of energy efficiency. On the other hand, increase in Net Fixed Capital Formation contributes to the reduction of the Intensity Effect which implies an increase in the efficient use of energy. It was concluded that the increased Rate of Investment in the economy, besides increasing the Energy Efficiency in industry, is also responsible for reducing energy consumption and thus benefit the industrial sector itself by reducing costs as well as the whole society through the benefits that the reduction of energy production can have on the environment and saving non-renewable resources.
Savazzi, Éder Renato [UNESP]. "Sustentabilidade e otimização energética de uma planta industrial utilizando a tecnologia de regeneração." Universidade Estadual Paulista (UNESP), 2017. http://hdl.handle.net/11449/151687.
Повний текст джерелаApproved for entry into archive by LUIZA DE MENEZES ROMANETTO (luizamenezes@reitoria.unesp.br) on 2017-09-26T17:54:15Z (GMT) No. of bitstreams: 1 savazzi_er_me_guara.pdf: 10486715 bytes, checksum: c5f7f12a7e3167bc3b4a4449aacfcfa3 (MD5)
Made available in DSpace on 2017-09-26T17:54:15Z (GMT). No. of bitstreams: 1 savazzi_er_me_guara.pdf: 10486715 bytes, checksum: c5f7f12a7e3167bc3b4a4449aacfcfa3 (MD5) Previous issue date: 2017-08-01
O emprego de centrífugas tipo batelada numa usina sucroalcooleira é feito a partir de dados disponibilizados pelos fabricantes dos equipamentos, em função, basicamente, da capacidade produtiva de cada máquina e da sua eficiência energética. Grande parte das unidades sucroalcoleiras em atividade no país ainda operam com máquinas antigas, de pequeno porte, com baixa eficiência energética, com acionamento por motores multi-polos comandados por contatores para variação da velocidade. Até a década passada as usinas produtoras de açúcar e etanol geravam energia apenas o suficiente para seu auto consumo; com os incentivos do governo federal através de programas como o Proinfa, as usinas foram motivadas a comercializar seu excedente de energia para o SIN, possibilitando o aumento de suas receitas. Pelo fato de produzir sua própria energia através da queima do bagaço, praticamente não havia preocupação com os equipamentos de baixa eficiência energética que operavam nestas plantas, porém, a partir da possibilidade da comercialização do excedente de energia foi necessário um trabalho para melhorar o desempenho energético dos equipamentos de maior consumo. Deste modo, a proposta deste trabalho consiste na análise comparativa da substituição de centrífugas antigas por centrífugas modernas (considerando o dimensionamento adequado em função do processo e dos limites operacionais de cada máquina), com foco tanto nos resultados técnicos, quanto produtivos e financeiros do investimento. As centrífugas propostas possuem motor de alto rendimento acionados por inversor de frequência regenerativo, que possibilita a geração de energia pela própria máquina durante a etapa de desacelaração e, como se trata de um processo cíclico, a devolução de energia para a rede é feita repetidamente a cada ciclo. O modelo de otimização proposto foi validado a partir de dados de aplicações em empreendimentos existentes, com resultados compatíveis com o que foi efetivamente implantado; seu pay-back tem a capacidade de pagar a implantação de uma nova máquina por ano, apenas com o retorno financeiro do ganho com energia elétrica.
The use of batch centrifuges in a sugar mills is based on data provided by the equipment manufacturers, basically due to the production capacity of each machine and its energy efficiency. Most of the sugar-alcohol units in operation in the country still operate with old machines, small, with low energy efficiency, driven by multi-pole motors driven by contactors for speed variation. Until the past decade, sugar and ethanol-only plants that produced only enough energy for their own consumption, with the federal government's incentives through programs like Proinfa, the mills were motivated to market their surplus energy to SIN. Thus enabling an increase in its revenue. Because it produced its own energy through the burning of the bagasse, there was practically no concern with the low energy efficiency equipment that operated in these plants, from the possibility of the commercialization of surplus energy, a work was needed to improve the energy performance of the equipment Consumption. Thus, the proposal of this work consists of the comparative analysis of the replacement of old centrifuges by modern centrifuges (considering the adequate design depending on the process and the operational limits of each machine), focusing both on technical and productive and financial investment results. The proposed centrifuges have high efficiency motor driven by a regenerative frequency inverter, which allows the generation of energy by the machine itself during the deceleration stage and as it is a cyclic process the return of energy to the network is done repeatedly every cycle. The proposed optimization model was validated from application data in existing projects, with results compatible with what was effectively implemented, the pay-back has ability to pay for the deployment of a new machine per year, only with the financial return of the gain in electric power.
Absalyamova, Viktoriya. "Energy Analysis within Industrial Hydraulics and Correspondent Solar PV System Design." Thesis, Högskolan Dalarna, Maskinteknik, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:du-5099.
Повний текст джерелаCastro, Renato Ely. "Plataforma automatizada e normatizada de monitoração, verificação e gestão de índices de energia." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2014. http://hdl.handle.net/10183/96660.
Повний текст джерелаThis work describes the requirements for the definition, implementation, maintenance and improvement of energy management systems in the industrial environment with a systematic approach concerning continuous improvement routines for energy efficiency. For this purpose, it was proposed the establishment of a framework based on automation to implement monitoring, verification and management of energy resources compatible with a standardized energy management system, including requirements for energy use and consumption, in addition to monitoring, documentation, communication, project best practices, equipment acquisition, systems, processes and human resources involved in energy performance. The strategy of energy use analysis proposed in this work is based on the methodology of monitoring and targeting that consists of a systematic approach in the use of energy resources in order to achieve the best economic result through the permanent management of energy consumption. Furthermore, this work includes that system as a procedure in the planning phase of ISO50001 standard which establishes the concepts for energy management systems implementation. In order to aggregate all tools associated to this scenario, this paper proposes the use of a supervisory tool integrated to a real-time software (Soft-PLC) that runs the control application and a factory floor distributed system automation hardware in an IEC61131 compatible environment. The project of the control application of energy use was conducted using different programming languages defined in IEC to perform all the procedures of measurement, monitoring and management required by the system, including comparative analysis with the "best practices", use of innovative technologies, product and service approach, energy audit and compliance with regulatory milestones. The expected results of adopting an automation-based platform for energetic management include system flexibility, adaptability and usability. Besides, a project of automation in this scenario of open platform tends to introduce lower development and deployment costs.
Castillo, Ramos Gerardo. "Drivers and barriers to industrial energy efficiency and climate change mitigation in Mexico : the case of the iron and steel industry." Thesis, University of East Anglia, 2011. https://ueaeprints.uea.ac.uk/32708/.
Повний текст джерелаMathias, Rodrigo Escada [UNESP]. "Redução do consumo de energia fóssil na geração de vapor utilizado em restaurante industrial de empresa automotiva." Universidade Estadual Paulista (UNESP), 2016. http://hdl.handle.net/11449/144534.
Повний текст джерелаApproved for entry into archive by Felipe Augusto Arakaki (arakaki@reitoria.unesp.br) on 2016-11-07T19:55:46Z (GMT) No. of bitstreams: 1 mathias_re_me_guara.pdf: 1662746 bytes, checksum: 954b916c500d16709c82f21f90f55277 (MD5)
Made available in DSpace on 2016-11-07T19:55:46Z (GMT). No. of bitstreams: 1 mathias_re_me_guara.pdf: 1662746 bytes, checksum: 954b916c500d16709c82f21f90f55277 (MD5) Previous issue date: 2016-09-01
No atual contexto energético mundial, a busca pela mitigação e, sempre que possível, a substituição de combustíveis fósseis por fontes renováveis, são a pauta de diversas instituições e empresas, pois a disponibilidade de recursos não é proporcional ao crescimento do consumo. Este trabalho tem por objetivo a redução do uso de gás natural para geração de vapor nos processos de cocção de cozinha industrial. Foi realizado a caracterização do processo e dos equipamentos, identificando o fluxo de vapor ao longo de todo o processo. De modo comparativo, desenvolveu-se propostas utilizando energia renovável para redução do uso de combustível fóssil. Para suportar essa atividade foram realizadas modelagens termodinâmica do sistema atual comparando-a aos sistemas propostos, mostrando o comportamento e definindo qual proposta teria a maior colaboração na redução do consumo de combustível. Por fim, foi estudado a viabilidade financeira de cada proposta através do método do VPL e payback. O presente trabalho gerou oito propostas, entre energia solar, produção de biogás a partir de resíduos orgânicos e efluentes de estação de tratamento de esgoto, geração de energia elétrica por meio de microturbina a gás e motor de combustão interna. Conclui-se que das oito propostas, três apresentaram potencial energético capaz de substituir em 100 % a vazão mássica de gás natural demandada na cozinha industrial, além de obterem viabilidade financeira satisfatória para seguir em frente com implementação do projeto. A substituição do gás natural pelo biogás gerado a partir de efluentes da estação de tratamento foi a proposta que apresentou o melhor desempenho, a mesma foi capaz de substituir 100 % da vazão mássica de gás natural utilizado para gerar vapor aos vasos de pressão da cozinha industrial, sendo 199.741 kWh de potencial energético e um VPL positivo de R$ 2.473.966,15, com retorno dos investimentos em menos de um ano.
In the current global energy context of mitigation of non-renewable fuels and whenever it is possible, replacing fossil fuels by renewable sources are the agenda of the most of institutions and companies, because the availability of resources is not proportional to the growth of consumption. This work has as target to reduce the use of natural gas for steam generation in the cooking process of industrial kitchen. It was performed a process and equipment characterization, identifying the steam flow along the whole process. In a comparative way, it has developed proposals using renewable energy for reducing the use of fossil fuel. To support that, it was done a thermodynamic modeling of the current system compared with the proposed ones, showing the behavior and defining which proposal had the larger collaboration in terms of fuel consumption reduction. Finally, it was analyzed the financial feasibility of each alternatives by NPV and payback method. The present work has created eight proposals, such as solar energy, biogas production from organic waste and from wastewater of sewage treatment station, electric energy from gas micro turbine and internal combustion engine. Concludes that from eight proposals, three presented energetic potential able to replace in 100 % the natural gas mass flow demanded in the industrial kitchen, beyond to get satisfactory financial viability to move forwards with the project implementation. The replacement of natural gas by generated biogas from wastewater of sewage treatment station was the proposal that presented the best performance, this ones was able to replace 100 % of the natural gas mass flow used to generate steam to the pressure vessel of industrial kitchen, where 199.741 kWh of energetic potential and a NPV of R$ 2.473.966,15, with an investment return less than one year.
Naturesa, Jim Silva. "Eficiência energética, política industrial e inovação tecnológica." [s.n.], 2011. http://repositorio.unicamp.br/jspui/handle/REPOSIP/258233.
Повний текст джерелаTese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Civil, Arquitetura e Urbanismo
Made available in DSpace on 2018-08-18T03:25:41Z (GMT). No. of bitstreams: 1 Naturesa_JimSilva_D.pdf: 5201250 bytes, checksum: 844230f71c467ed3cab5b7b4ecc69ddc (MD5) Previous issue date: 2011
Resumo: Essa tese procura relacionar os conceitos de eficiência energética, política industrial e inovação tecnológica. O objetivo é apresentar os principais pontos para uma nova política industrial, fundamentada na eficiência energética, que tenha como conseqüências a redução do consumo de energia elétrica e, principalmente, a divulgação do conceito de inovação tecnológica. O uso eficiente de energia elétrica diminui a necessidade de expansão do setor elétrico, postergando investimentos necessários ao atendimento do mercado de energia. Para os consumidores, as principais vantagens são a redução do gasto com energia elétrica, a otimização dos sistemas e marketing associado às idéias de preservação ambiental. Nesse sentido, o Programa Nacional de Conservação de Energia Elétrica (PROCEL), através de inúmeras iniciativas, é uma importante ferramenta governamental para a conservação de energia e o aumento da eficiência energética no país. Para que esses programas obtenham sucesso uma nova política industrial é necessária. Projetos de eficiência devem ter como objetivo a modernização do parque industrial - buscando a capacitação produtiva, gerencial e comercial das empresas. Para tanto, tais projetos, que em muitos casos baseiam-se na substituição de equipamentos antigos por novos, pode ser encarada como uma inovação incremental. Logo é proposta uma nova política industrial na qual o foco é a inovação tecnológica via eficiência energética. A idéia principal é utilizar os recursos destinados à inovação tecnológica em projetos de eficiência, pois esses conceitos são sinônimos. Os principais beneficiados serão as Micros, Pequenas e Médias Empresas (MPMEs) que, normalmente, gastam grande parte do seu faturamento com energia elétrica
Abstract: This thesis tries to relate the concepts of energy efficiency, industrial politics and technological innovation. The goal is to present the main points for a new industrial policy, based on energy efficiency, which has the consequences of reducing energy consumption and, especially, the dissemination of the concept of technological innovation. The efficient use of electric energy diminishes the necessity of expansion of the electric sector, postponing necessary investments to the attendance of the energy market. To consumers, the main advantages are the reduction of electric energy consumption, the optimization of the systems and the marketing linked with the ideas of environment preservation. In this direction, the Programa Nacional de Conservação de Energia Elétrica (PROCEL), through innumerable initiatives, is an important governmental tool for the conservation of energy and the increase of the energy efficiency in the country. Therefore these programs get success a new industrial politics is necessary. Projects of efficiency must have as objective the modernization of the industrial plants - increasing the production, management and commercial qualifications of the companies. To reach these targets, such projects, which in many cases are based on the equipment replacement, can be faced as an incremental innovation. Consequently, it is suggested a new industrial politics, which focus the technological innovation by means of efficiency energy. The main idea is to use the resources destined for the innovation technology in efficiency projects, therefore - in our point of view, these two concepts are synonymous. The main beneficiaries will be the Small and Medium Size Companies that, normally, spend great part of its invoicing with electrical energy
Doutorado
Recursos Hidricos, Energeticos e Ambientais
Doutor em Engenharia Civil
Willkomm, Johannes, Matthias Wahler, and Jürgen Weber. "Potentials of Speed and Displacement Variable Pumps in Hydraulic Applications." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-200237.
Повний текст джерелаMateu, Royo Carlos. "Development of High Temperature Heat Pumps for Industrial Waste Heat Recovery." Doctoral thesis, Universitat Jaume I, 2021. http://dx.doi.org/10.6035/14107.2021.744033.
Повний текст джерелаUno de los mayores desafíos de esta década recae en el desarrollo de sistemas energéticos más sostenibles que contribuyan a la preocupación medioambiental, especialmente la mitigación del cambio climático. Extender las condiciones de funcionamiento de la tecnología de bomba de calor a temperaturas más elevadas permitirá descarbonizar el sector industrial desde dos vertientes: recuperando calor de fuentes de calor residual, actualmente disipado al ambiente y producir calor a los niveles térmicos requeridos, útiles para los procesos industriales, reduciendo así las emisiones de CO2 equivalentes del sector industrial y contribuyendo al desarrollo sostenible. Esta tesis pretende abordar el desarrollo de bombas de calor de alta temperatura a través de un análisis teórico y experimental, para abordar diferentes desafíos tecnológicos: arquitectura, refrigerantes, prototipo experimental, aplicaciones avanzadas e integración de sistemas, generando nuevos conocimientos que representan un paso adelante en la tecnología de bombas de calor de alta temperatura.
Programa de Doctorat en Tecnologies Industrials i Materials
Клепікова, Світлана Володимирівна. "Управління енергоефективністю промислового підприємства". Thesis, Національний технічний університет "Харківський політехнічний інститут", 2019. http://repository.kpi.kharkov.ua/handle/KhPI-Press/42910.
Повний текст джерелаThesis for granting the Degree of Candidate of Economic Sciences in specialty 08.00.04 - economy and management of the enterprises (by types of economic activity). - National Technical University "Kharkiv Polytechnic Institute", Kharkiv, 2019. The thesis is devoted to actual problems of theoretical, methodical and practical aspects of management of energy efficiency of an industrial enterprise. In the dissertation the theoretical basis is investigated, a variety of formulations of concepts "energy efficiency", "energy saving", "energy management", "energy efficiency management" are considered and their use in work is determined. It is proposed to evaluate the energy efficiency of the enterprise by the indicator of energy intensity, which is the ratio of two economic values: the annual cost of energy resources to the cost of production. It is taken into account that the management of energy efficiency of an industrial enterprise is based on the general principles of the theory of control, according to which the control system consists of two subsystems - the managing one, and the controlled one, which is exposed to the control and has the effect (influence) of the control subsystem. Emphasis is placed on the fact that tasks and conditions formulated by higher hierarchical levels of energy efficiency management are a particularly important factor of influence. It is established that the task of improving the energy efficiency of industrial enterprises of the Ukrainian economy requires the creation of appropriate conditions at all levels of government. Such levels are: state, sectoral, regional and enterprise level. It has been established that conceptually levels of energy efficiency management systems can be represented as a hierarchical feedback loop. The conducted analysis of the regulatory framework in the field of energy efficiency and energy saving showed that at each stage of energy efficiency management specific tasks were defined for ensuring the process of implementation of state policy, with the nature of tasks for each of the levels having its own specificity. It was found that after the first world energy crisis, industrialized countries paid much attention to solving the problem of improving the energy efficiency of their economies and gained considerable experience in this direction, which was reflected in the international standard ISO 50001: 2011 "Energy Management Systems", which was further supplemented by a number of improving of the provisions in ISO 50001: 2018 "Energy management systems. Requirements and Guidelines for Implementation, "which implements PDCA Continuous Improvement Management. This standard should be implemented in the regulatory acts when implementing the "Energy Strategy of Ukraine to 2035". On the basis of the conducted analysis of the Laws of Ukraine on energy saving, international and national standards, the methodology of energy audit, it is established the expediency of introducing amendments to take into account the multiplicative and synergistic effects of saving energy resources in the modernization of energy equipment. The results of the analysis made it possible to correlate the level of ISO 50001 implementation by countries with the indicator of energy intensity, namely reducing it with the widespread introduction of energy management systems in industry, which allowed to reduce energy consumption per unit of production for the period 2000 - 2017 by almost 20%. Increasing GDP energy efficiency for Ukraine is a particularly important area of economic development. Significant investments are needed to improve energy efficiency, and the search for domestic investment sources is of particular importance for the country, for which it is desirable to have a toolkit for calculating the projected value of energy savings for the enterprise. It was found that the main levers for improving the energy efficiency of the leading countries were investment and improved governance. A significant increase in energy efficiency can be achieved by improving the management of energy efficiency of industrial enterprises; improving the energy efficiency of industrial enterprises, improving management and implementing the ISO 50001 standard. It is proposed and substantiated the feasibility of using the neural network method in the energy efficiency management of an industrial enterprise to determine the energy intensity index, which can be used for prompt provision of information on forecasted cost savings due to energy savings with multiple refinements in the process of determining the final values of the production form for the next year policies, setting up annual energy efficiency plans, planning other indicators production, on which the energy efficiency of an industrial enterprise depends. The methodical approach of determination of the index of energy intensity of the enterprise with the help of artificial neural networks (ANN), with the use of methods of expert estimations, a priori ranking and correlation-regression analysis is developed. An economic and mathematical model was created bas ed on a multilayer directional perceptron synthesized by the genetic algorithm method. The efficiency of the methodological approach was checked, as well as its testing according to the statistics of the leading Kharkiv enterprises. In the process of testing and analyzing its results, the conclusions were drawn about the need for: systematic accumulation of annual statistics, both the indicator itself and the factors that influence it; analysis of calculations and establishment of correctness of data accounting; identifying typical differences in the interpretation of a factor and making appropriate adjustments; taking into account the features of the enterprise; carrying out with the help of ANN research on the choice of rational values of production indicators - input values of the neural network that affect the indicator of energy intensity; studies on improving accuracy and forecasting due to changes in the structure and type of neural network, etc. Such a wide range of functions and the need for their systematic implementation led to the conclusion that it is advisable to create in the management structure of an industrial enterprise a structure that would include specialists capable of performing these functions - the Intelligent Energy Management Group (IEM). The practical result of the dissertation work on taking into account the multiplicative and synergistic effects is: first, the conclusion about the expediency of taking into account these effects when conducting an internal energy audit, for which it is necessary to make appropriate additions to its methodology of its conduct; secondly, the conclusion about the expediency of introducing into the legislative and regulatory acts the amendments that stimulate the enterprises to prioritize the modernization of power equipment with multiplicative and synergistic effect (as such, which provides significant savings of fuel and energy resources at the state level). Recommendations are given on the use of the results of work at different hierarchical levels of energy efficiency management and in other types of industrial enterprise management.
Кузнєцов, В. Ю. "Інструментарій підвищення енергетичної ефективності діяльності вітчизняних промислових підприємств: мікроаспект". Thesis, Сумський державний університет, 2015. http://essuir.sumdu.edu.ua/handle/123456789/42900.
Повний текст джерелаКузнєцов, В. Ю., та О. Ю. Попова. "Економічний інструментарій подолання бар'єрів до забезпечення енергетичної ефективності діяльності промислових підприємств". Thesis, ТОВ «ДД «Папірус», 2013. http://essuir.sumdu.edu.ua/handle/123456789/37404.
Повний текст джерелаGallo, Alexandre de Barros. "Avaliação da inserção do gás natural no setor industrial brasileiro: uma análise de indicadores de impactos energético, ambiental e econômico." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/106/106131/tde-09042018-173952/.
Повний текст джерелаThe present energy use structure in the Brazilian industrial sector is a consequence of its historical context within the Brazilian energy sector. This historical background helps to explain some characteristics, like the intensive use of electricity in heating processes, the electrothermia, that lasts until today. The current natural gas production scenario in Brazil is promising, considering the Pre-Salt production, which signals an opportunity to apply this natural resource to final energy uses with higher value, such as final energy for industry. In this context was structured this dissertation, comprising a data analysis technique development and its application to evaluate the insertion of natural gas in the Brazilian industrial sector and its impacts. The developed data analysis technique is constituted by the assessment of four indicators: Additional Demand (DA); Impact on Primary Energy (IEP); Impact on Carbon Emissions (IEC) and Impact on Energy Cost (ICE). In the results obtained, the Non-Ferrous Metals Sector was more prominent as it presented the greater additional demand for natural gas and the largest reductions in primary energy demand, CO2 emissions and energy costs. Other sectors that stood out were the Iron and Steel Sector and the Food and Beverages Sector. Considering 2013 as the base year, the additional demand for natural gas resulting from the substitution of fuel oil and electricity in heating processes would represent a 37% to 42% increase in the demand for natural gas in the Brazilian industrial sector, equivalent to 12% to 14% of Brazil\'s domestic natural gas supply, or 35% to 40% of Gasbol\'s maximum capacity. The impact on primary energy would represent a reduction of 1% to 2% of the primary energy demand of the Brazilian industrial sector. The impact on CO2 emissions would represent a reduction of 4% to 5% of the CO2 emissions associated to energy use of the Brazilian industrial sector. The impact on energy cost would represent a reduction of 2% to 4% of the energy costs associated with electricity and fuel oil of the Brazilian industrial sector. Thus, it is considered that there is an opportunity for the insertion of natural gas in the Brazilian industrial sector resulting from the substitution of fuel oil and electricity by natural gas in thermal processes. Overall, the substitution impacts reduce primary energy demand, CO2 emissions and energy costs. However, this is an energy-saving initiative through energy substitution, being necessary to further promote energy efficiency, for all end uses and types of final energy in use, to multiply the impacts in terms of reducing energy consumption and mitigating emissions, two important elements in the current debate on combating climate change.
Клепікова, Світлана Володимирівна. "Управління енергоефективністю промислового підприємства". Thesis, Національний технічний університет "Харківський політехнічний інститут", 2019. http://repository.kpi.kharkov.ua/handle/KhPI-Press/42909.
Повний текст джерелаThesis for granting the Degree of Candidate of Economic Sciences in specialty 08.00.04 – economy and management of the enterprises (by types of economic activity). – National Technical University "Kharkiv Polytechnic Institute", Kharkiv, 2019. The thesis is devoted to actual problems of theoretical, methodical and practical aspects of management of energy efficiency of an industrial enterprise. In the dissertation the theoretical basis is investigated, the variety of formulations of the concepts of "energy efficiency", "energy saving", "energy efficiency management" and the use of them in work are considered. The Laws of Ukraine on energy conservation, the international and national standards, the methodology of energy audit are analyzed, and the expediency of introducing the corresponding additions to take into account the multiplicative and synergetic effects of energy resources saving during the modernization of the power equipment is established. It is suggested and justified the feasibility of using artificial neural networks (ANN) in the management of energy efficiency of an industrial enterprise. The method of determination of the energy intensity of an enterprise with the help of ANN is developed, with the involvement of expert estimation methods, a priori ranking and correlation-regression analysis. A mathematical model based on a multilayered straightforward perceptron synthesized by the genetic algorithm method was created. The efficiency of the methodological approach was checked, as well as its testing according to the statistics of the leading Kharkiv enterprises. In the process of testing and analyzing its results, the conclusions were drawn about the need for: systematic accumulation of annual statistics, both the indicator itself and the factors that influence it; analysis of calculations and establishment of correctness of data accounting; identifying typical differences in the interpretation of a factor and making appropriate adjustments; taking into account the features of the enterprise; carrying out with the help of ANN research on the choice of rational values of production indicators - input values of the neural network that aff ect the indicator of energy intensity; studies on improving accuracy and forecasting due to changes in the structure and type of neural network, etc. Such a wide range of functions and the need for their systematic implementation led to the conclusion that it is advisable to create in the management structure of an industrial enterprise a structure that would include specialists capable of performing these functions - the Intelligent Energy Management Group (IEM). The practical result of the dissertation work on taking into account the multiplicative and synergistic effects is: first, the conclusion about the expediency of taking into account these effects when conducting an internal energy audit, for which it is necessary to make appropriate additions to its methodology of its conduct; secondly, the conclusion about the expediency of introducing into the legislative and regulatory acts the amendments that stimulate the enterprises to prioritize the modernization of power equipment with multiplicative and synergistic effect (as such, which provides significant savings of fuel and energy resources at the state level). Recommendations are given on the use of the results of work at different hierarchical levels of energy efficiency management and in other types of industrial enterprise management.
Taheri, Kamran [Verfasser]. "Energy and Resource Efficiency in Industrial Manufacturing Using an Integrated Exergy, Energy and Economic Method : Energie- und Ressourceneffizienz in der industriellen Produktion durch Anwendung einer integrierten Exergie-, Energie- und Ökonomiemethode / Kamran Taheri." Aachen : Shaker, 2018. http://d-nb.info/1159835926/34.
Повний текст джерелаPinto, Leandro Mendes [UNESP]. "Desenvolvimento de metodologia para implementação de eficiência energética em sistemas auxiliares de uma planta industrial siderúrgica semi-integrada." Universidade Estadual Paulista (UNESP), 2016. http://hdl.handle.net/11449/133968.
Повний текст джерелаApproved for entry into archive by Juliano Benedito Ferreira (julianoferreira@reitoria.unesp.br) on 2016-02-02T18:43:14Z (GMT) No. of bitstreams: 1 pinto_lm_me_guara.pdf: 3124900 bytes, checksum: 4b8f01450ff24987ee9a730975769c25 (MD5)
Made available in DSpace on 2016-02-02T18:43:14Z (GMT). No. of bitstreams: 1 pinto_lm_me_guara.pdf: 3124900 bytes, checksum: 4b8f01450ff24987ee9a730975769c25 (MD5) Previous issue date: 2016-01-07
Na atualidade a eficiência energética é um dos assuntos mais citados nas indústrias, pois as empresas que investem em projetos de eficiência energética conseguem economizar recursos, ganhar competitividade e ajudar a amenizar a pressão sobre o aumento da oferta de energia. Postergar parte do investimento no aumento da oferta de energia permite ao governo e ao empresário liberarem recursos para outras prioridades, sem perda de qualidade, segurança no abastecimento e com ganhos sociais e ambientais. Este estudo apresenta critérios de aplicação da metodologia da eficiência energética em uma indústria siderúrgica onde são avaliadas três áreas dentro desta usina, tais como sistemas motrizes, sistemas térmicos e sistemas de iluminação, onde pode-se obter ganhos significativos implementando a metodologia da eficiência energética.
At present energy efficiency is one of the issues most frequently cited in industries, as companies that invest in energy efficiency projects can save resources, improve competitiveness and helps ease the pressure on increasing the supply of energy. Postpone part of the investment in increasing energy supply allows the government and the business owner to release resources for other priorities, without loss of quality, security of supply and social and environmental gains. This study presents application criteria of energy efficiency methodology in a steel industry which are evaluated in three areas of a steel mill, such as drive systems, thermal systems and lighting systems, where can be made significant gains by implementing the methodology of energy efficiency.
Jay, Stephen. "Drying processess in the United Kingdom : assessment of industrial energy utilisation and efficiency of drying systems and the modelling of drying characters using neural networks." Thesis, Aston University, 1996. http://publications.aston.ac.uk/15330/.
Повний текст джерелаTang, Fan. "HVAC system modeling and optimization: a data-mining approach." Thesis, University of Iowa, 2010. https://ir.uiowa.edu/etd/895.
Повний текст джерелаIqbal, Fowad. "Generate light with wind power." Thesis, Tekniska Högskolan, Högskolan i Jönköping, JTH. Forskningsmiljö Produktutveckling - Simulering och optimering, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-21124.
Повний текст джерелаSilva, Roberto Perillo Barbosa da. "Análise do uso da energia elétrica em instalações industriais do segmento de alimentos e bebidas." [s.n.], 2011. http://repositorio.unicamp.br/jspui/handle/REPOSIP/263362.
Повний текст джерелаDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica
Made available in DSpace on 2018-08-17T20:51:17Z (GMT). No. of bitstreams: 1 Silva_RobertoPerilloBarbosada_M.pdf: 2003113 bytes, checksum: b03934eb470f8966d8a8f19e8d3fc7a5 (MD5) Previous issue date: 2011
Resumo: A energia elétrica é um insumo com diversas aplicações. No caso industrial, este insumo corresponde a uma parcela daqueles utilizados na produção e, por isso, busca-se, cada vez mais, a racionalização deste tipo de energia, sem que, para isso, seja necessário diminuir o nível de produção, ou prejudicar a qualidade do produto final. No Brasil, o setor industrial é responsável por cerca da metade do consumo final de energia elétrica; logo, ações que visam estimular o uso racional e a conservação de energia elétrica são importantes. Este trabalho teve como objetivo analisar o uso da energia elétrica em instalações industriais do segmento de Alimentos e Bebidas, através de uma amostra situada na região Sudeste do Brasil. O segmento foi escolhido pelo fato de ter grande representatividade, em termos de maiores consumidores de energia elétrica, entre as indústrias do País. Para o desenvolvimento do trabalho, foi aplicado nas instalações industriais um questionário preliminar para identificar dados primários referentes aos processos e sistemas existentes em cada uma delas. Posteriormente, foram realizados diagnósticos energéticos nessas instalações para identificar e quantificar, através de medições em campo, as condições nominais e operativas dos equipamentos e processos e caracterizar a utilização da energia elétrica. Para a realização das medições, utilizou-se o Guia Nacional de Medição e Verificação (M&V) da Eletrobrás/PROCEL, para padronizar as análises. Portanto, através da medição em campo, determinou-se para cada instalação industrial analisada, indicadores de eficiência energética, como o fator de carga, o consumo específico e o preço médio da energia. Também foi realizada a análise do enquadramento tarifário das instalações, com o intuito de verificar se as condições atuais de contratação e fornecimento de energia elétrica consistem nas mais adequadas para o perfil de cada uma delas. Constatou-se através das medições e da análise do enquadramento tarifário que, apesar das instalações já terem equipes que realizam algum tipo de monitoramento do uso da energia elétrica, em muitos casos ainda se tem oportunidades para a racionalização do uso da energia elétrica. E mais, sugere-se que seja realizado um estudo de prospecção tecnológica, pois cada vez mais há o surgimento de novos processos e/ou equipamentos mais eficientes, podendo aumentar ainda mais o potencial para a otimização do uso da energia elétrica. No Brasil existem atualmente linhas para financiamento, visando à eficiência energética, além de empresas que prestam serviço e financiam a implantação destas ações (as chamadas ESCOs), sendo ressarcidas através das economias obtidas. Por isso a importância de trabalhos que enfatizam a viabilidade de ações visando aumentar a eficiência energética nos processos e equipamentos, pois ainda há grande aversão ao risco por parte dos empresários
Abstract: Electrical energy is an input with many applications. In industries, this input corresponds to a considerable portion utilized in the production and for this reason, it is demanded ways to save energy without decreasing the production or cause no prejudice to final product quality. In Brazil, industries consume about half of the electrical energy utilized in the industrial sector therefore it is important to study actions that intend to stimulate rational use of energy and its conservation. The current study aims to analyze electrical energy uses in food and beverages industry installations through a sample located in Southeast region of Brazil. These segments of industry have been chosen because they have highly representative as the largest consumers of electrical energy in the country. For the developing of the research, it was applied preliminary questions in industrial installations intending to identify primary data relating to process and systems in each industry. Afterwards, it was realized energy diagnosis to identify and quantify, through field measures, the nominal and operatives conditions of equipments and process besides characterize the uses of energy. For the measures data collection and standard the analysis, it has been used the National Guide of Measurement and Verification (M&V) from Eletrobrás/PROCEL. Therefore, through the measurement in industries, it was determined for each industry installation analyzed, energy efficiency indicators as charge factor, specific consumption and energy average price. In addiction, it was achieved the charging system analysis of installations, with purpose of verifying if the current conditions of contractation and energy supply consists in the most appropriate profile for each industry. It was verified through measurement and charging system analysis that in spite of the installations have already had staffs responsible for monitoring the uses of electricity, in most situations, there are still opportunities to avoid electrical energy waste. Furthermore, this current research proposes a study of technological prospecting, because more and more most efficient equipments and new process are emerging, increasing the potential to optimize the uses of electrical energy. In Brazil, there are researches funding aiming energy efficiency, besides several companies providing service and financing the implementation of these actions (known as ESCOs) and they are compensated through saving costs. For this reason, researches that emphasizes energy efficiency on equipments and process are very important because industry community has had risk aversion yet
Mestrado
Engenharia Mecanica
Mestre em Planejamento de Sistemas Energéticos
Kabanov, Alexey. "Livslängd hos keramisk fiber i elektriska industriugnar." Thesis, Högskolan i Gävle, Energisystem, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-27049.
Повний текст джерелаToday's energy use is reduced as a result of current environmental policy, which requires industries to energy-efficient their manufacturing processes and reduce the use of fossil fuels. The goal of this is to reduce final energy consumption to 50% and balance future electricity supply. Energy efficiency and development are the most important aspects of industrial processes that lead to sustainability and change in environmental impact. Developments in refractory insulation materials gave great opportunities for steel industries to increase the quality of material production and reduce heat losses in furnace plants. This leads in particular to increased competitiveness and reduced energy costs. Energy saving savings create room for new investments that are used to improve the steel industry's efficiency. Insulation materials are currently used in most modern industrial heating furnaces and the problems with these insulations that they have a limited service life which imposes more accurate maintenance and higher investment costs. There are no specific methods today that can control the aging of the insulation and are limited only to visual inspection at decommissioned furnaces that can be carried out only on special occasions with planned production shutdowns. The inspections of the oven's lining usually detect larger problems than had been forecast. This causes many unplanned repairs due to production delays that affect the company's economy. This study will investigate the insulation quality of electrical furnaces on the subject line in Söderfors. During this work, risk zones will be located where the insulation is most affected during production and how a worn wool affects the efficiency and energy consumption of the oven at the company. The purpose of this study is to elaborate methods based on predictive maintenance, production efficiency, and efficiency of the ovens, helping the company to have better control over its facilities that provide room for new investment, which primarily aims to balance the energy use of heating ovens, but mainly to respond on the question of how fast ceramic wool degradation occurs. The result achieved in this work describes the aging of wool that does not occur constantly but varies due to a number of conditions and that the right amount of chemical composition determines the insulation quality. In order to be able to follow the aging, a new measurement method is applied in practice that provides an accurate state of insulation condition and can predict future accidents.
Романовський, Володимир Ігоревич, Владимир Игоревич Романовский, Volodymyr Ihorevych Romanovskyi, Д. Кірієнко та І. Слюсар. "Моделювання споживання електричної енергії динамічним навантаженням в електричних мережах промислових підприємств". Thesis, Сумський державний університет, 2015. http://essuir.sumdu.edu.ua/handle/123456789/41394.
Повний текст джерелаSouza, Sergio Alencar de. "Aplicação de termoeconomia na análise de um processo industrial de aquecimento de reatores químicos." Universidade de Taubaté, 2010. http://www.bdtd.unitau.br/tedesimplificado/tde_busca/arquivo.php?codArquivo=312.
Повний текст джерелаIn line with the constant search for better environmental performance on the part of industries with the application of energetic efficiency concept, affording greater competition due to the resource optimization, this work has as its aim to evaluate the possible environmental impacts, adding the economic gains produced by the expense reduction with energy by the application of solar water heating as an alternative for the reduction of natural gas consumption in a chemical industrial plant, where the operations to transform raw materials into suitable products for filling and packing assembly line are carried out in chemical reactors, having this mentioned transformation a great dependency on the temperature control. Hence, the basic proposal of this work is pre-heating the make-up water from the installation responsible for keeping under controlled temperature the several mixing reactors of an industrial plant for personal hygiene products, thus positively interfering in the energetic source used by such industry. Applying thermoeconomic models and protocols for quantifications of greenhouse effect gases recognized by IPCC (International Panel on Climate Change) on the development of this work, the environmental performance evolution is demonstrated by the advantage of water preheating application, which makes it possible the reduction of fossil fuels consumption, represented by natural gas in this case, at about 60,000 cubic meters per year, thus reducing the atmospheric emission of one of the most gases which are responsible for the greenhouse effect intensification, the carbon dioxide, at about 150 tCO2e per year, additionally representing an annual energy reduction of approximately 700,000 kWh. In addition to the environmental performance evolution on the heating generation system, its estimated that the investment might be recovered within a three and five year period.
Alcaraz, Segura Aurora. "Enhancing the thermal efficiency of a salinity gradient solar pond. Implementation of the study in the design, construction, salinity gradient establishment, operation and energy transfer at industrial scale." Doctoral thesis, Universitat Politècnica de Catalunya, 2019. http://hdl.handle.net/10803/666185.
Повний текст джерелаEl modelo energético en las últimas décadas ha estado dominado por el consumo de combustibles fósiles, asumiendo un alto coste ambiental. El calentamiento global y la destrucción de la capa de ozono son dos ejemplos del deterioro que se está sufriendo debido al uso de estas fuentes de energía. Cada vez más, el uso de energías renovables es una de las alternativas en la construcción de un modelo económico sostenible. Entre las energías renovables, la energía solar se presenta como una fuente de energía inagotable y accesible. El estanque solar es una tecnología que cumple todos los requisitos para ser considerado un dispositivo de almacenamiento de energía. Puede almacenar energía solar, cargando durante los meses de alta incidencia solar (primavera-verano), almacenando la energía y haciendo posible su uso cuando es necesaria. Un estanque solar con gradiente salino es un cuerpo de agua salina con capacidad de almacenamiento térmico a largo plazo. El objetivo y alcance de esta tesis doctoral se divide en dos partes. Primero, la mejora de la eficiencia del estanque solar a través de la evaluación experimental de los procesos de extracción de calor y aportación de calor en diferentes condiciones climáticas. Estos experimentos se llevaron a cabo en un estanque solar a escala planta piloto de 50 m2 situada en Martorell (Cataluña). Los experimentos de extracción de calor se realizaron mediante el uso de intercambiadores de calor situados en el área lateral y en el área inferior del estanque. El proceso de extracción de calor se llevó a cabo de manera individual (área lateral o inferior) o simultáneamente (área global). Los resultados demostraron que la eficiencia del estanque aumenta cuando el calor es extraído usando el intercambiador de calor lateral en comparación con el uso del intercambiador de calor inferior o con los dos intercambiadores de calor simultáneamente. Por otro lado, el uso de placas solares como fuente externa de energía se llevó a cabo junto con el proceso de extracción de calor en dos condiciones climatológicas diferentes: invierno y verano. Los resultados obtenidos indicaron que el uso de placas solares permitió un aumento del 50% en la eficiencia diaria durante los experimentos llevados a cabo durante la estación fría. La segunda parte se centró en el diseño, construcción y operación de un estanque solar de 500 m2 en las instalaciones de Solvay Minerales (Granada). El estanque solar fue diseñado para suministrar el calor necesario para precalentar el agua (> 60 ° C) y los reactivos en la unidad de flotación de la instalación de procesamiento de minerales. Las eficiencias globales obtenidas después del primer y segundo período de operación son 9.7 y 12.3%, respectivamente, con valores máximos de 28 y 24% obtenidos durante los primeros meses de operación. En cuanto al ahorro económico, se obtuvieron reducciones de 52 y 68% en el primer y segundo período en comparación con el sistema tradicional sin estanque solar. Además, el impacto ambiental se reduce claramente considerando la reducción de las emisiones de CO2. La experiencia del estanque solar de Granada demuestra que la principal ventaja de estos sistemas es la capacidad de almacenar energía en los meses con mayor radiación solar, para poder proporcionar un flujo de calor a un sistema externo durante todo el año, incluso en condiciones climáticas adversas, como se pudo comprobar durante la nevada en enero de 2015.