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Статті в журналах з теми "Cogeneration of electric power and heat Australia"
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Langston, Lee. "Campus Heat." Mechanical Engineering 128, no. 12 (December 1, 2006): 28–31. http://dx.doi.org/10.1115/1.2006-dec-2.
Повний текст джерелаАнотація:
The University of Connecticut is focusing on cogeneration, also called combined heat and power. It is the production of more than one useful form of energy—both heat and electric power—from a single energy source, such as the burning of natural gas or some other fuel. The cogeneration plant has been designed to blend seamlessly into the campus landscape. Cogeneration uses one measure of gas twice—first for generating electricity, then to produce steam. A financial study done by consultants during the plant's planning phase shows definite savings over the long run, especially since the cost of electricity can be expected to vary with the cost of natural gas in New England.
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Liu, Jiangcai. "Cogeneration and heat exchanger control system based on clean energy." Thermal Science 25, no. 4 Part B (2021): 2999–3007. http://dx.doi.org/10.2298/tsci2104999l.
Повний текст джерелаАнотація:
Combined cooling, heating, and power systems have received widespread attention for their high efficiency and clean characteristics. The combined cooling, heating, and power system will join the cogeneration system as clean energy and renewable resource of solar energy, further alleviating the energy crisis and environmental pollution problems. To improve the stability of the distributed power grid connection, the article designs a photovoltaic battery system that can smooth the output power and combines it with the traditional combined cooling, heating, and power system to build a comprehensive cogeneration system. Under the two operating modes of thermal follow, and electric follow, considering the impact of electric vehicle charging load, two environmental cost and life cycle cost indicators are evaluated.
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Pang, Xinfu, Xu Zhang, Wei Liu, Haibo Li, and Yibao Wang. "Optimal Scheduling of Cogeneration System with Heat Storage Device Based on Artificial Bee Colony Algorithm." Electronics 11, no. 11 (May 29, 2022): 1725. http://dx.doi.org/10.3390/electronics11111725.
Повний текст джерелаАнотація:
The rigid constraint of using heat in determining electricity for thermal power units is eliminated to improve the absorption capacity of wind power. In this study, heat storage devices and electric boilers are added to the cogeneration system to alleviate the wind curtailment phenomenon. First, the main reasons for wind curtailment are analyzed according to the structural characteristics of the power supply in the northern part of China. Second, a scheduling model of a cogeneration system, including a heat storage device and an electric boiler, is constructed. An improved artificial bee colony algorithm program is also designed and compiled based on MATLAB. Finally, the feasibility of the proposed scheme is verified by simulation examples, and an economic analysis of wind power consumption is performed. Results show that adding electric boilers lessens coal consumption costs and improves economic benefits.
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Baughn, J. W., and R. A. Kerwin. "A Comparison of the Predicted and Measured Thermodynamic Performance of a Gas Turbine Cogeneration System." Journal of Engineering for Gas Turbines and Power 109, no. 1 (January 1, 1987): 32–38. http://dx.doi.org/10.1115/1.3240003.
Повний текст джерелаАнотація:
The thermodynamic performance of a gas turbine cogeneration system is predicted using a computer model. The predicted performance is compared to the actual performance, determined by measurements, in terms of various thermodynamic performance parameters which are defined and discussed in this paper. These parameters include the electric power output, fuel flow rate, steam production, electrical efficiency, steam efficiency, and total plant efficiency. Other derived parameters are the net heat rate, the power-to-heat ratio, and the fuel savings rate. This paper describes the cogeneration plant, the computer model, and the measurement techniques used to determine each of the necessary measurands. The predicted and the measured electric power compare well. The predicted fuel flow and steam production are less than measured. The results demonstrate that this type of comparison is needed if computer models are to be used successfully in the design and selection of cogeneration systems.
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Bao, Huashan, Yaodong Wang, Constantinos Charalambous, Zisheng Lu, Liwei Wang, Ruzhu Wang, and Anthony Paul Roskilly. "Chemisorption cooling and electric power cogeneration system driven by low grade heat." Energy 72 (August 2014): 590–98. http://dx.doi.org/10.1016/j.energy.2014.05.084.
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Grkovic, Vojin, Dragoljub Zivkovic, and Milana Gutesa. "A new approach in CHP steam turbines thermodynamic cycles computations." Thermal Science 16, suppl. 2 (2012): 399–407. http://dx.doi.org/10.2298/tsci120503178g.
Повний текст джерелаАнотація:
This paper presents a new approach in mathematical modeling of thermodynamic cycles and electric power of utility district-heating and cogeneration steam turbines. The approach is based on the application of the dimensionless mass flows, which describe the thermodynamic cycle of a combined heat and power steam turbine. The mass flows are calculated relative to the mass flow to low pressure turbine. The procedure introduces the extraction mass flow load parameter ?h which clearly indicates the energy transformation process, as well as the cogeneration turbine design features, but also its fitness for the electrical energy system requirements. The presented approach allows fast computations, as well as direct calculation of the selected energy efficiency indicators. The approach is exemplified with the calculation results of the district heat power to electric power ratio, as well as the cycle efficiency, versus ?h. The influence of ?h on the conformity of a combined heat and power turbine to the grid requirements is also analyzed and discussed.
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Wang, Xiuyun, Junyu Tian, Rutian Wang, Jiakai Xu, Shaoxin Chen, Jian Wang, and Yang Cui. "Multi-Objective Economic Dispatch of Cogeneration Unit with Heat Storage Based on Fuzzy Chance Constraint." Energies 12, no. 1 (December 29, 2018): 103. http://dx.doi.org/10.3390/en12010103.
Повний текст джерелаАнотація:
With the increasing expansion of wind power, its impact on economic dispatch of power systems cannot be ignored. Adding a heat storage device to a traditional cogeneration unit can break the thermoelectric coupling constraint of the cogeneration unit and meet the economic and stable operation of a power system. In this paper, an economy-environment coordinated scheduling model with the lowest economic cost and the lowest pollutant emissions is constructed. Economic costs include the cost of conventional thermal power generating units, the operating cost of cogeneration units, and the operating cost of wind power. At the same time, green certificate costs are introduced into the economic costs to improve the absorption of wind power. Pollutant emissions include SO2 and NOx emissions from conventional thermal power units and cogeneration units. The randomness and uncertainty of wind power output are fully considered, and the prediction error of wind power is fuzzy treated according to the fuzzy random theory, and the electric power balance and spinning reserve fuzzy opportunity conditions are established, which are converted into the explicit equivalent. The improved multi-objective particle swarm optimization (MOPSO) was used to solve the model. With this method, the validity of the model is verified by taking a system with 10 machines as an example.
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Wrochna, Grzegorz, Michael Fütterer, and Dominique Hittner. "Nuclear cogeneration with high temperature reactors." EPJ Nuclear Sciences & Technologies 6 (2020): 31. http://dx.doi.org/10.1051/epjn/2019023.
Повний текст джерелаАнотація:
Clean energy production is a challenge, which was so far addressed mainly in the electric power sector. More energy is needed in the form of heat for both district heating and industry. Nuclear power is the only technology fulfilling all 3 sustainability dimensions, namely economy, security of supply and environment. In this context, the European Nuclear Cogeneration Industrial Initiative (NC2I) has launched the projects NC2I-R and GEMINI+ aiming to prepare the deployment of High Temperature Gas-cooled Reactors (HTGR) for this purpose.
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JĘDRA, Sylwester, and Adam SMYK. "Trigeneration system based on medium power gas engine." Combustion Engines 125, no. 2 (May 1, 2006): 10–19. http://dx.doi.org/10.19206/ce-117343.
Повний текст джерелаАнотація:
One of the possibilities of increase of energy and economic efficiency of a small combined heat and power plant is its operation in trigeneration system, in which the conventional system of cogeneration heat and electric power production is widened by a cooling production system. Technical description and characteristics of the set of gas engine plus absorption unit as well as its technological diagram is presented. Performances and limitations of the gas engine are given. Needs for heat, cooling and electric power of a user are described. Total capital and operating costs are estimated and technical and economic conditions for the positive economic efficiency of the trigeneration system are evaluated.
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Derii, V. O. "Economic efficiency of district heating systems’ heat generation technologies." Problems of General Energy 2021, no. 2 (June 23, 2021): 21–27. http://dx.doi.org/10.15407/pge2021.02.021.
Повний текст джерелаАнотація:
A new selection criterion of heat-generating technologies for the district heating systems (DHS) retrofit, Marginal Levelized Price of Energy (MLPOE), is proposed. MLPOE is the minimum weighted marginal price of thermal energy produced by the technological unit. MLPOE accounts for the costs and incomes of considered heat generation technologies and allows more accurate comparison among technologies that produce only one type of energy with multi-product technologies, e.g. cogeneration technologies and technologies that provide ancillary services to power systems in addition to only heat production. The calculations with the use of the proposed criterion of heat-generation technologies implementation into DHS during its retrofit are showed that: - the electric boilers are economically feasible since as they are capable to provide ancillary services in case of electrical supply failures. The implementation of an electric boiler with an installed capacity of about 10 MW requires 2 -3.5 times higher expenditures for its connection to the grid, which leads to a 2.5 - 5 times longer payback period, but electric boilers' MLPOE is more than 2 times less than the average in Ukraine (1265.8 UAH / Gcal); - the heat pumps usage in DHS is feasible if they are used for heat supply purposes only with the capability to provide ancillary services. The marginal price for ancillary services should be not less than 17.1 € / MWh (as of 2020); - the boilers burning natural gas due to the lowest specific investment costs and hence small payback period will be widely used during DHS retrofit under conditions of low-carbon development of Ukraine; - the biomass burning boilers and cogeneration units will not be widely used due to the limited fuel resource (biomass) and on stock areas. The capacities of 1 - 6 MW are estimated to be in operation for DHS; Gas-piston cogeneration units are economically feasible for daily power system regulation. At the same time, they provide the lowest minimum weighted average break-even price of thermal energy for the heat supply company. Keywords: Marginal Levelized Price of Energy, Levelised Cost of Energy, power system, electric loads, heat pumps, boilers, cogeneration, district heating system
Дисертації з теми "Cogeneration of electric power and heat Australia"
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DeJong, Bretton. "Cogeneration in the new deregulated energy environment." Thesis, Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/17549.
Повний текст джерела
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Jones, Sophia Christina Acle. "Micro-cogeneration optimal design for service hot water thermal loads." Thesis, Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/16016.
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Benelmir, Riad. "Second analysis of a cogeneration cycle." Diss., Georgia Institute of Technology, 1989. http://hdl.handle.net/1853/20000.
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Nomnqa, Myalelo Vuyisa. "Design of a domestic high temperature proton exchange membrane fuel cell cogeneration system : modelling and optimisation." Thesis, Cape Peninsula University of Technology, 2017. http://hdl.handle.net/20.500.11838/2574.
Повний текст джерелаАнотація:
Thesis (DTech (Chemical Engineering))--Cape Peninsula University of Technology, 2017.Fuel cells are among power generation technologies that have been proven to reduce greenhouse gas emissions. They have the potential of being one of the most widely used technologies of the 21st century, replacing conventional technologies such as gas turbines in stationary power supplies, internal combustion engines in transport applications and the lithium-ion battery in portable power applications. This research project concentrates on the performance analysis of a micro-cogeneration system based on a high temperatureproton exchange membrane (HT-PEM) fuel cell through modelling and parametric analysis. A model of a 1kWe micro-cogeneration system that consists of a HT-PEM fuel cell, a methane steam reformer (MSR) reactor, a water-gas-shift (WGS) reactor, heat exchangers and an inverter was developed. The model is coded/implemented in gPROMS Model Builder, an equation oriented modelling platform. The models predictions for the HTPEM fuel cell, MSR and WGS, and the whole system were validated against experimental and numerical results from literature. The validation showed that the HT-PEM fuel cell model was able to predict the performance of a 1kWe fuel cell stack with an error of less than 6.4%. The system model is rstly used in a thermodynamic analysis of the fuel processor for a methane steam reforming process and investigated in terms of carbon monoxide produced. The combustor fuel and equivalence ratios were shown to be critical decision variables to be considered in order to keep the carbon monoxide from the fuel processor at acceptable levels for the fuel cell stack.
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Kalua, Tisaye Bertram. "Analysis of factors affecting performance of a low-temperature Organic Rankine Cycle heat engine." Thesis, Nelson Mandela Metropolitan University, 2017. http://hdl.handle.net/10948/17844.
Повний текст джерелаАнотація:
Organic Rankine Cycle (ORC) heat engines convert low-grade heat to other forms of energy such as electrical and mechanical energy. They achieve this by vaporizing and expanding the organic fluid at high pressure, turning the turbine which can be employed to run an alternator or any other mechanism as desired. Conventional Rankine Cycles operate with steam at temperatures above 400 ℃. The broad aspect of the research focussed on the generation of electricity to cater for household needs. Solar energy would be used to heat air which would in turn heat rocks in an insulated vessel. This would act as an energy storage in form of heat from which a heat transfer fluid would collect heat to supply the ORC heat engine for the generation of electricity. The objective of the research was to optimize power output of the ORC heat engine operating at temperatures between 25℃ at the condenser and 90 to 150℃ at the heat source. This was achieved by analysis of thermal energy, mechanical power, electrical power and physical parameters in connection with flow rate of working fluid and heat transfer fluids.
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Soderlund, Matthew Roger. "Congeneration dedicated to heating and cooling." Thesis, Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/17672.
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Moran, Gallardo Jesus Armando. "Impacto de geradores sincronos no desempenho de regime permanente de sistemas de distribuição de energia eletrica." [s.n.], 2005. http://repositorio.unicamp.br/jspui/handle/REPOSIP/259450.
Повний текст джерелаАнотація:
Orientador: Luiz Carlos Pereira da Silva, Walmir de Freitas FilhoDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Eletrica e de Computação
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Resumo: Neste trabalho, apresenta-se um estudo detalhado sobre a influência provocada pela instalação de geradores síncronos no desempenho da operação em regime permanente de sistemas de distribuição de energia elétrica. O estudo é baseado em simulações estáticas e foram investigadas duas formas de controle do sistema de excitação do gerador: operação mantendo tensão terminal constante e operação mantendo fator de potência constante. Determinou-se o impacto nos seguintes aspectos técnicos associados com a inserção de geradores nos alimentadores de distribuição: variação do perfil de tensão do sistema em regime permanente, perdas elétricas de potência ativa e reativa, e estabilidade de tensão. Diversos cenários e condições de carregamento do sistema foram considerados. Baseados nos resultados obtidos são propostos índices matemáticos que permitem avaliar sistematicamente o impacto desses geradores no desempenho de regime permanente do sistema. A partir desses índices empresas ou órgãos responsáveis pela integração de geração distribuída podem determinar quais pontos do sistema de distribuição são mais adequados para a instalação de geradores síncronos, tendo em consideração os aspectos supracitados
Abstract: In this master¿s thesis, it is presented detailed studies on the impact of distributed synchronous generators on the steady-state performance of distribution system. Synchronous generators equipped with exciter systems acting as voltage or power factor regulator are analyzed. Impacts on steady state voltage profile, active and reactive power losses, and voltage stability were determined considering different scenarios and system loading conditions. Mathematical indices are proposed to systematically evaluate such impacts. With these indices, one can determine which buses are more suitable for the installation of distributed synchronous generators considering the above cited technical aspects
Mestrado
Energia Eletrica
Mestre em Engenharia Elétrica
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Del, Carlo Fabrício Ramos [UNESP]. "Analise exergoeconômica aplicada a microgeração em condomínios residenciais." Universidade Estadual Paulista (UNESP), 2013. http://hdl.handle.net/11449/106452.
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delcarlo_fr_dr_guara.pdf: 631762 bytes, checksum: 5276c4d08ffccec04ea448af7a38df27 (MD5)A descentralização na geração de energia tem sido proposta em nível mundial para diferentes situações como forma de se alcançar maior confiabilidade de geração elétrica e melhores condições ambientais. Nesse sentido, em diversos países (o Brasil inclusive) tem sido proposta a utilização de sistemas de geração distribuída, com incentivo ao emprego de fontes renováveis de energia, sendo a microcogeração e a minigeração algumas das possibilidades tecnológicas disponíveis. Comprovar a elegibilidade econômica de uma alternativa de minigeração, utilizando métodos que permitam avaliar o custo exergoeconômico em busca de substituir tecnologias consagradas pela instalação de novas tecnologias, é objeto principal perseguido neste trabalho. A superestrutura de minicogeração analisada é composta de células-combustível e motores de combustão interna com fins de geração de energia para um condomínio multirresidencial. A Teoria do Custo Exergético (TCE) foi utilizada e avalia com precisão os custos exergoeconômicos que, aliados aos métodos financeiros orçamentários (taxa interna de retorno, valor presente líquido, tempo de retorno), permitem a demonstração da viabilidade econômica. Aliado a estes métodos, como complemento na tomada de decisão, há o estudo de otimização multitemporal, que permite a seleção de apenas um dos doze equipamentos propostos, além de indicar qual o melhor combustível a ser utilizado como fonte primária de energia. A modelagem da superestrutura demonstra também a possibilidade de comercialização dos produtos com a concessionária, permitindo tanto vender o excedente de produção quanto comprar energia elétrica em alguns momentos, respeitando as flutuações de consumo ao longo do dia e em sazonalidades distintas. É possível constatar que as células-combustível entregam...
Decentralization in power generation has been proposed worldwide for different situations as a way to achieve greater reliability of electricity generation and improved environmental conditions. Thus, in many countries (including Brazil) the use of distributed generation systems has been proposed, encouraging the use of renewable energy sources, the micro and mini-generation being some of the technological available possibilities. The main object pursued in this work is to check the eligibility of an economic mini-generation alternative based on methods to evaluate the exergoeconomic cost of replacing consecrated technologies by new technologies. The superstructure is comprised of fuel cells and internal combustion engines for the purpose of generating energy to a residential condominium. The Exergetic Cost Theory was used and accurately assess the exergoeconomic costs that, coupled with financial budgeting methods (internal rate of return, net present value and payback time), allow demonstrating the economic viability. In addition to these methods, a multi-temporal optimization method, which allows the selection of only one of the twelve proposed equipment, besides indicating the best fuel to be used as a primary energy source, was also modeled. The modeling of the superstructure also demonstrates the possibility of commercializing products with the concessionaire, allowing both sell excess production as buying electricity at times, respecting the fluctuations of consumption throughout the day and in different seasons. It can be seen that the fuel cells deliver more expensive electricity when compared with combustion engines, but these costs are equated with the delivery volume of hot water at more affordable costs. The data show that it is more advantageous to use the hydrogen-powered fuel cell to compose the... (Complete abstract click electronic access below)
9
Del, Carlo Fabrício Ramos. "Analise exergoeconômica aplicada a microgeração em condomínios residenciais /." Guaratinguetá, 2013. http://hdl.handle.net/11449/106452.
Повний текст джерелаАнотація:
Orientador: Jose Antonio Perrella BalestieriBanca: Rubens Alves Dias
Banca: Jose Alexandre Matelli
Banca: Ricardo Dias Martins de Carvalho
Banca: Jose Rui Camargo
Resumo: A descentralização na geração de energia tem sido proposta em nível mundial para diferentes situações como forma de se alcançar maior confiabilidade de geração elétrica e melhores condições ambientais. Nesse sentido, em diversos países (o Brasil inclusive) tem sido proposta a utilização de sistemas de geração distribuída, com incentivo ao emprego de fontes renováveis de energia, sendo a microcogeração e a minigeração algumas das possibilidades tecnológicas disponíveis. Comprovar a elegibilidade econômica de uma alternativa de minigeração, utilizando métodos que permitam avaliar o custo exergoeconômico em busca de substituir tecnologias consagradas pela instalação de novas tecnologias, é objeto principal perseguido neste trabalho. A superestrutura de minicogeração analisada é composta de células-combustível e motores de combustão interna com fins de geração de energia para um condomínio multirresidencial. A Teoria do Custo Exergético (TCE) foi utilizada e avalia com precisão os custos exergoeconômicos que, aliados aos métodos financeiros orçamentários (taxa interna de retorno, valor presente líquido, tempo de retorno), permitem a demonstração da viabilidade econômica. Aliado a estes métodos, como complemento na tomada de decisão, há o estudo de otimização multitemporal, que permite a seleção de apenas um dos doze equipamentos propostos, além de indicar qual o melhor combustível a ser utilizado como fonte primária de energia. A modelagem da superestrutura demonstra também a possibilidade de comercialização dos produtos com a concessionária, permitindo tanto vender o excedente de produção quanto comprar energia elétrica em alguns momentos, respeitando as flutuações de consumo ao longo do dia e em sazonalidades distintas. É possível constatar que as células-combustível entregam... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: Decentralization in power generation has been proposed worldwide for different situations as a way to achieve greater reliability of electricity generation and improved environmental conditions. Thus, in many countries (including Brazil) the use of distributed generation systems has been proposed, encouraging the use of renewable energy sources, the micro and mini-generation being some of the technological available possibilities. The main object pursued in this work is to check the eligibility of an economic mini-generation alternative based on methods to evaluate the exergoeconomic cost of replacing consecrated technologies by new technologies. The superstructure is comprised of fuel cells and internal combustion engines for the purpose of generating energy to a residential condominium. The Exergetic Cost Theory was used and accurately assess the exergoeconomic costs that, coupled with financial budgeting methods (internal rate of return, net present value and payback time), allow demonstrating the economic viability. In addition to these methods, a multi-temporal optimization method, which allows the selection of only one of the twelve proposed equipment, besides indicating the best fuel to be used as a primary energy source, was also modeled. The modeling of the superstructure also demonstrates the possibility of commercializing products with the concessionaire, allowing both sell excess production as buying electricity at times, respecting the fluctuations of consumption throughout the day and in different seasons. It can be seen that the fuel cells deliver more expensive electricity when compared with combustion engines, but these costs are equated with the delivery volume of hot water at more affordable costs. The data show that it is more advantageous to use the hydrogen-powered fuel cell to compose the... (Complete abstract click electronic access below)
Doutor
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Puidokas, Tautvydas. "Kogeneracinės jėgainės efektyvumo didinimo šilumos akumuliavimo sistemos pagalba analizė." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2011. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2011~D_20110621_170414-33886.
Повний текст джерелаАнотація:
Darbe apžvelgtos užsienio valstybių centralizuoto šilumos tiekimo (CŠT) sistemų darbo režimai ir pagrindiniai parametrai. Išskirtinai atsižvelgta į CŠT sitemas, kuriose yra kogeneracinės jėgainės su šilumos akumuliavimo talpomis. Darbe pateikiami pavyzdžiai, kokios gali būti ir kaip pritaikomos šilumos akumuliavimo talpos. Tokių sistemų pagrindiniai privalumai yra tai, jog naudojantis ŠAT sistema galima subalansuoti CŠT sistemose esančių įrenginių darbo režimus, taip pat esant kogeneracinėms jėgainėms galima pereinant nuo šilumos vartojimo grafiko jų darbą adaptuoti prie elektros vartojimo grafiko. Darbe analizuojamas Mažeikių miesto šilumos tiekimo sistemos darbas esant kogeneracinėms jėgainėms su šilumos akumuliacijos talpomis. Modeliuoti galimi įrenginių darbo režimai dviem prioritetais: pastoviosios galios ir maksimaliosios pikinės elektros energijos gamybos. Gauta, kad efektyvus šilumos akumuliacijos kiekis turėtų būti 200 MWh tai – atitiktų 4 tūkst. m3 talpą dirbant Mažeikių ŠT darbo parametrais. Nustatyta, kad valandinis ŠAT sistemos prijungimo vamzdžių pralaidumas turi būti 17 MW. Ekonominėje dalyje vertinamas ŠAT sistemos pelningumas. ŠAT sistemos pelningumas dirbant pastovios galios režimu yra neigiamas, taigi projektas būtų ekonomiškai nenaudingas, tačiau ŠAT sistemą naudojant pikinės elektros gamybai pelningumas svyruotų nuo -0,5 mln. Lt iki 0,9 mln. Lt, priklausomai nuo to, kaip susiformuos pikinės elektros rinka.The thesis surveys working regimes and main parameters of centrally supplied heat (CSH) systems of foreign states. The exclusive attention is paid to CHS systems, having combined heat and power plans with heat accumulation tanks. Examples are provided in the thesis of the types of heat accumulation tanks and their application. The main advantages of such systems are that working regimes of devices in the CHS systems may be balanced with the help of HAT system, as well as that their work may be adapted from heat usage schedule to electricity usage schedule, if combined heat and power plants are used. The thesis analyzes the work of Mažeikiai town heat supply system, having combined heat and power plants with heat accumulation tanks. Possible working regimes of devices in two priorities have been modelled: fixed power and maximum peak electric power production. It has been received that the efficient quantity of heat accumulation should be 200 MWh; this would conform to 4 thousand m3 tank under Mažeikiai HS working parameters. It has been determined that the hourly capacity of pipeline of HAT system connection must be 17 MW. Economical part evaluates profitability of HAT system. HAT system’s profitability, using the fixed power for maintenance is negative; the project would be economically unprofitable; however using HAT system for production of peak electric power, profitability would fluctuate from -0.5 million LTL to 0.9 million LTL, depending on formation of peak... [to full text]
Книги з теми "Cogeneration of electric power and heat Australia"
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Cogeneration. Reston, Va: Reston Pub. Co., 1985.
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2
Guinn, Gerald R. Cogeneration: Profit from energy :Alabama cogeneration manual. Montgomery, Ala: Energy Division, Alabama Dept. of Economic and Community Affairs, 1987.
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3
1924-, Payne F. William, ed. Cogeneration sourcebook. Atlanta, Ga: Fairmont Press, 1985.
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Orlando, J. A. Cogeneration design guide. Atlanta, Ga: American Society of Heating, Refrigerating and Air-Conditioning Engineers, 1996.
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5
Engineers, Institution of Electrical, ed. Combined heat & power generating systems. London: P. Peregrinus, 1988.
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Limaye, Dilip R. Industrial cogeneration applications. Lilburn, GA: Fairmont Press, 1987.
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Cogeneration planner's handbook. Lilburn, GA: Fairmont Press, 1991.
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Institution of Engineering and Technology, ed. Cogeneration: A user's guide. London: Institute of Engineering and Technology, 2010.
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Massachusetts. Office of Energy Resources. Cogeneration in state facilities. Boston: Massachusetts Executive Office of Energy Resources, 1987.
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The European Association for the Promotion of Cogeneration. A guide to cogeneration. Brussels, Belgium: The European Association for the Promotion of Cogeneration, 2001.
Знайти повний текст джерелаЧастини книг з теми "Cogeneration of electric power and heat Australia"
1
Goldemberg, José. "New Technologies." In Energy. Oxford University Press, 2012. http://dx.doi.org/10.1093/wentk/9780199812905.003.0011.
Повний текст джерелаАнотація:
What is cogeneration? Cogeneration or CHP (combined heat and power) devices allow the simultaneous production of electric and thermal energy in energy systems. They typically recover and use waste heat from a thermal power plant burning coal. These systems are widely used in Eastern...
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Gusarov, Valentin, Leonid Yuferev, Zahid Godzhaev, and Aleksandr Parachnich. "Gas Turbine Power Plant of Low Power GTP-10S." In Advances in Environmental Engineering and Green Technologies, 85–106. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-5225-9420-8.ch004.
Повний текст джерелаАнотація:
Currently, there is an increase in the use of gas turbines. Today they are used in the energy sector: aviation, armed forces, and the navy. The introduction of a new manufacturing technology developed by the authors will make it possible to manufacture cheap and reliable installations and thus ensure an exceptional position on the Russian market for goods and technologies, and taking into account the use of intellectual rights, abroad. The scientific novelty of the sample is the method of calculating small engines with a centrifugal compressor, a centripetal turbine and a combustion chamber with a negative thrust vector of the air flow. It is shown that the developed microgas turbine cogeneration power generator consists of a microturbine engine with a periphery, a free power turbine necessary for the selection of mechanical power, a high-speed electric generator with permanent magnets, an electronic power conversion system, exhaust heat energy recovery system and an automatic control system.
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"Installation Plan of a Fuel Cell Cogeneration System." In Advances in Environmental Engineering and Green Technologies, 103–35. IGI Global, 2014. http://dx.doi.org/10.4018/978-1-4666-5796-0.ch004.
Повний текст джерелаАнотація:
This chapter consists of two sections, ‘Installation Plan of a Fuel Cell Microgrid System Optimized by Maximizing Power Generation Efficiency’ and ‘Fuel Cell Network with Water Electrolysis for Improving Partial Load Efficiency of a Residential Cogeneration System.’ A microgrid that use PEFC may significantly reduce the environmental impact when compared with traditional power plants. The 1st section investigates what occurs when a set of PEFCs and a natural gas reformer are connected to the microgrid in an urban area. In the 2nd section, a fuel cell energy network which connects hydrogen and oxygen gas pipes, electric power lines and exhaust heat output lines of the PEFC cogeneration for individual houses is analyzed.
Тези доповідей конференцій з теми "Cogeneration of electric power and heat Australia"
1
Beyene, Asfaw. "Combined Heat and Power Sizing Methodology." In ASME Turbo Expo 2002: Power for Land, Sea, and Air. ASMEDC, 2002. http://dx.doi.org/10.1115/gt2002-30567.
Повний текст джерелаАнотація:
As deregulation of the electric market finds legitimate global acceptance, more efficient alternatives to centralized power production, such as the Combined Heat and Power (CHP), also known as cogeneration, are finding growing reception. Advances in sizing methodologies, selection criteria, and control technologies, as well as development of associated regulatory issues, must accompany this favorable disposition. This paper presents an overview of some important applications of a heat recovery system and discusses a simplified method of sizing a CHP as a part of an early feasibility decision.
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Joyce, John S. "Large Heavy-Duty Gas Turbines for Base-Load Power Generation and Heat Cogeneration." In ASME 1985 Beijing International Gas Turbine Symposium and Exposition. American Society of Mechanical Engineers, 1985. http://dx.doi.org/10.1115/85-igt-19.
Повний текст джерелаАнотація:
The predominant role of large gas turbines has shifted from peaking-load duty to midrange and base-load electric power generation, especially within combined-cycle plants. Such applications require heavy-duty industrial gas turbines to ensure the same high reliability and availability for continuous service as the associated steam turbines. It is also important that the gas turbines be designed for low maintenance to minimize the necessary outage times and costs for component repair and replacement. The basic design principles and applications of Model V94 gas turbines are discussed with special reference to highly reliable and economic bulk power generation.
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Huzvar, Jozef, Andrej Kapjor, Nader Barsoum, Jeffrey Frank Webb, and Pandian Vasant. "MICRO-COGENERATION INCL. THE CONVERSION OF CHEMICAL ENERGY OF BIOMASS TO ELECTRIC ENERGY AND THE LOW POTENTIAL HEAT." In PROCEEDINGS OF THE FOURTH GLOBAL CONFERENCE ON POWER CONTROL AND OPTIMIZATION. AIP, 2011. http://dx.doi.org/10.1063/1.3592440.
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Kataoka, Tadashi, Teruyuki Nakajima, Shigeru Sakata, and Tadahiko Kishikawa. "A Microturbine Cogeneration Package for Japanese Market." In ASME Turbo Expo 2007: Power for Land, Sea, and Air. ASMEDC, 2007. http://dx.doi.org/10.1115/gt2007-27697.
Повний текст джерелаАнотація:
This paper presents the specifications, design, verification testing and performance of a microturbine cogeneration package that conforms to Japanese laws, standards and codes. Elliott microturbine engine was adopted to the package, and peripheral equipments such as a low noise enclosure, a recuperator, a power conditioning system (PCS), a fuel gas compressor and heat recovery equipments were developed. Verification tests such as a containment test, an over speed trip test, a drop load test, pressure tests and strength calculations were conducted under the supervision of an inspection agency, and certified to satisfy requirements of the Japanese technical standards of gas turbines for power generation and microturbines. Other verification tests for the PCS and the fuel gas compressor were conducted, and electric power companies and gas companies accepted that the equipments were conformed to each technical standard. This paper also presents numerous novel features of the package such as low noise, low vibration, alternative heat output of hot water or steam, easy engineering, installation and maintenance.
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Rodri´guez Marti´nez, J. Hugo, Agusti´n Alcaraz Caldero´n, Luis Iva´n Ruiz Flores, and Roberto Valdez Vargas. "Technical and Economic Analysis of Cogeneration Systems for Refinery Power Plant Applications." In ASME 2010 Power Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/power2010-27262.
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This paper shows the main results from a technical and economical study for the implementation of new cogeneration systems in Mexican refineries. At least three cogeneration alternatives to match a 50% additional energy requirement (thermal and electric) for a refinery are analyzed. A balance simulator tool developed specially for the electric and steam refinery systems is used in order to obtain the technical parameters for the alternatives, which allows obtaining system performance indicators such as fuel consumption, cooling water requirement, electric and combined efficiency. Standard techniques as net present value, internal rate of return, and payback period are used for the economic analysis. According to the results, the best alternative was a gas turbine-heat recovery steam generator arrangement fueled by natural gas, including the respective adjustments of the refinery electrical and steam systems.
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Khalilarya, Shahram, Samad Jafarmadar, and Arzhang Abadi. "Exegetic Modeling and Second Law Based Optimization of Cogeneration Heat and Power System Using Evolutionary Algorithm (Genetic Algorithm)." In 2010 14th International Heat Transfer Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/ihtc14-22113.
Повний текст джерелаАнотація:
A gas-turbine cogeneration system with a regenerative air preheater and a single-pressure exhaust gas boiler serves as an example for application of CHP Plant. This CHP plant which can provide 30 MW of electric power and 14kg/s saturated steam at 20 bars. The plant is comprised of a gas turbine, air compressor, combustion chamber, and air pre-heater as well as a heat recovery steam generator (HRSG). The design Parameters of the plant, were chosen as: compressor pressure ratio (re), compressor isentropic efficiency (ηac), gas turbine isentropic efficiency (ηgt), combustion chamber inlet temperature (T3), and turbine inlet temperature (T4). In order to optimally find the design parameters a thermoeconomic approach has been followed. An objective function, representing the total cost of the plant in terms of dollar per second, was defined as the sum of the operating cost, related to the fuel consumption. Subsequently, different pars of objective function have been expressed in terms of decision variables. Finally, the optimal values of decision variables were obtained by minimizing the objective function using Evolutionary algorithm such as Genetic Algorithm. The influence of changes in the demanded power on the design parameters has been also studied for 30, 40 MW of net power output.
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Iki, Norihiko, Sanyo Takahashi, and Hirohide Furutani. "Performance of a Small Reheat Gas Turbine System as a Cogeneration System." In ASME Turbo Expo 2004: Power for Land, Sea, and Air. ASMEDC, 2004. http://dx.doi.org/10.1115/gt2004-53837.
Повний текст джерелаАнотація:
We proposed the concept of a small reheat gas turbine system. This reheat gas turbine consists positive-pressure part (Brayton cycle), negative-pressure part (inverted Brayton cycle) and heat exchangers. The system components are interchangeable with the micro gas turbine. This system can supply hot water and steam. However, we focused on the electric efficiency in the previous paper. This paper describes the performance of a small reheat gas turbine system from a point of view as a cogeneration system. The efficiency of electric power output is over 32% and the efficiency of heat output is only 15–20%. So overall, efficiency is about 50%. Therefore, we improved the heat recovery system of a small reheat gas turbine system. As a result, the overall efficiency becomes over 60% and consumption of cooling water reduces extremely. PURPA is over 50% when TIT is over 1573K.
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Ebrahimi, P., H. Karrabi, S. Ghadami, H. Barzegar, S. Rasoulipour, and M. Kebriyaie. "Thermodynamic Modeling and Optimization of Cogeneration Heat and Power System Using Evolutionary Algorithm (Genetic Algorithm)." In ASME Turbo Expo 2010: Power for Land, Sea, and Air. ASMEDC, 2010. http://dx.doi.org/10.1115/gt2010-23026.
Повний текст джерелаАнотація:
A gas-turbine cogeneration system with a regenerative air preheater and a single-pressure exhaust gas boiler serves as an example for application of CHP Plant. This CHP plant which can provide 30 MW of electric power and 14kg/s saturated steam at 20 bars. The plant is comprised of a gas turbine, air compressor, combustion chamber, and air pre-heater as well as a heat recovery steam generator (HRSG). The design Parameters of the plant, were chosen as: compressor pressure ratio (rc), compressor isentropic efficiency (ηac), gas turbine isentropic efficiency (ηgt), combustion chamber inlet temperature (T3), and turbine inlet temperature (T4). In order to optimally find the design parameters a thermoeconomic approach has been followed. An objective function, representing the total cost of the plant in terms of dollar per second, was defined as the sum of the operating cost, related to the fuel consumption. Subsequently, different pars of objective function have been expressed in terms of decision variables. Finally, the optimal values of decision variables were obtained by minimizing the objective function using Evolutionary algorithm such as Genetic Algorithm. The influence of changes in the demanded power on the design parameters has been also studied for 30, 40 MW of net power output.
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Nayak, Sandeep, Erol Ozkirbas, and Reinhard Radermacher. "Modeling of a 27 MW Combined Cycle Cogeneration Plant With Central Cooling Facility." In International Joint Power Generation Conference collocated with TurboExpo 2003. ASMEDC, 2003. http://dx.doi.org/10.1115/ijpgc2003-40161.
Повний текст джерелаАнотація:
This paper describes the modeling of a 27 MW combined cycle cogeneration plant with 10,000 tons chilled water central cooling facility. The cogeneration plant is designed to provide heating, cooling and electricity from a single fuel source viz., natural gas, though the gas turbines do have an inbuilt dual fuel combustion system. The topping cycle of the combined cycle cogeneration plant consists of two gas turbines each producing 11 MW of electric power at full load. The energy of the exhaust gases from these gas turbines is then utilized to generate steam in two heat recovery steam generators. The heat recovery steam generators are duct fired using natural gas to meet the peak steam load. In the bottoming part of the combined cycle, the steam from the heat recovery steam generators is expanded in a backpressure steam turbine to supply steam to the campus at about 963 kPa, generating an additional 5.5 MW of electric power in this process. There is no condenser wherein the campus acts as a sink for the steam. The central cooling facility is designed to supply 10,000 tons of chilled water out of which 3800 tons is supplied by two steam driven centrifugal chillers, which utilize a part of the steam supplied to the campus and the remaining by the centrifugal electric chillers. The combined cycle cogeneration plant along with the central chilled watercooling facility is modeled in a commercially available flexible cogeneration software package. The model is built based on the design data available from design manuals of gas turbines, heat recovery steam generators, backpressure steam turbine and centrifugal chillers. A parametric study is also done on the model to study the effect of different parameters like fuel flow rate, temperature etc on the output of the turbine and efficiency of the plant. Modeling of the inlet air-cooling of the gas turbine using an absorption chiller and electric chiller is also presented. Finally the paper discusses these results.
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Tenbusch, A. F. "CFD Modeling of Cogeneration Burner Applications and the Significance of Thermal Radiative Heat Transfer Effects." In International Joint Power Generation Conference collocated with TurboExpo 2003. ASMEDC, 2003. http://dx.doi.org/10.1115/ijpgc2003-40099.
Повний текст джерелаАнотація:
Industrial burners provide process heat for a wide range of applications including cogeneration power production. In such applications a (typically) natural gas fired stationary turbine powers an electric generator and indirectly powers a heat recover steam generator (HRSG). The HRSG steam cycle operates by reclaiming the residual thermal energy of the gas turbine exhaust (GTE) flow. Burners are used to reheat the GTE and increase plant capacity during peak demand periods. CFD modeling is used in the design of burner systems for HRSG applications. GTE flow exiting the turbine unit is passed through a diffuser and then expanded into ductwork where the steam system heat exchangers are located. The expansion of the GTE flow from the turbine diffuser to the full cross section of the ductwork is usually severe and creates an uneven flow distribution. Flow correcting structure may be needed to distribute the flow depending upon the severity of the duct expansion. CFD modeling is used to predict the flow distribution of the GTE and guide the design of any necessary flow correcting structure. Burners are typically installed in an array upstream of the application heat exchanger inlet. CFD combustion, heat transfer, and flow analysis is employed in the burner system design process to locate the burner array, determine any necessary flow baffling, and to ensure and provide a uniform thermal distribution at the downstream heat exchanger inlet. Excessive thermal variation in the GTE flow entering the heat exchanger results in large temperature gradients that can lead to thermal cracking and fatigue of the heat exchanger surfaces. CFD modeling is used to ensure that the burner system design produces a uniform flow and temperature distribution at the heat exchanger inlet region downstream of the burners. This report presents a case study of a CFD flow, heat-transfer, and combustion analysis for a typical HRSG burner application. Two CFD models were constructed for the analysis. The first model included the coupled effects of flow, heat transfer, and combustion for the entire HRSG model volume, but excluded the effects of thermal radiation. The second model included a sub-domain of the HRSG volume near the burner and included the additional effects of thermal radiation, both surface radiation and the effects of the radiatively participating flue gas. Radiative effects were included in the second model by employing the Discrete Transfer Method. Results of the study showed the significant role thermal radiative heat transfer had on the resulting temperature predictions downstream of the flame zone.