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	Emergy and life cycle assessment of polygeneration system
	Wang, Lingmei ; Ni, Weidou ; Li, Zheng
	2010-05-10 ; 2010-05-10
会议名称	ECOS 2006: Proceedings of the 19th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, Vols 1-3 ; 19th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2006) ; Aghia Pelagia, GREECE ; Web of Science
关键词	polygeneration system emergy Life Cycle Assessment sustainability ELECTRICITY PRODUCTION ENERGY POWER Thermodynamics Energy & Fuels Engineering, Mechanical
中文摘要	The polygeneration considered from the point of view of comprehensive optimizations a highly flexible and cross-sector integrated system of resources, energy and environment. Using coal, petrocoke or heavy oil residues with high sulfur content as feedstock syngas (the main components being CO and H2) is produced through oxygen-blown gasification. Syngas has diverse ways of use. The polygeneration could increase the adaptability and robustness of energy-service companies in the marketplace, providing them with flexibility in meeting demands in different market segments while achieving lower production costs and, reducing the risks of reliance on a single feedstock. In addition, with the possibility of achieving high conversion efficiencies and low polluting emissions and facilitating carbon capture, they could deliver high-quality energy services in a cost-effective way while meeting severe environmental requirements. Up to now, through designing and simulation, the efficiency, exergy, economic performance of a series liquid fuel-electricity of polygeneration based coal gasification have been studied. In this paper, Life Cycle Assessment and Emergy Synthesis are jointly used in order to evaluate the environmental performance of a polygeneration system in China. In fact, Life Cycle Assessment focuses primarily on the environmental impact of emissions while ignores the contribution of ecological services. On the other hand, methods from systems ecology do account for ecological inputs, but ignore the impact of emissions, Two cases, coal-based polygeneration system yielding electricity and methanol, and separate methanol plant and IGCC are evaluated and compared. Results indicate that the polygeneration system has better environmental performance, is more sustainable and is less stressful on the environment in comparison with separate plants for methanol and electricity production.
会议录出版者	NATL TECHNICAL UNIV ATHENS ; ZOGRAFOU ; HEROON POLYTECHNIOU 9, ZOGRAFOU, 157 80, GREECE
语种	英语 ; 英语
内容类型	会议论文
源URL	[http://hdl.handle.net/123456789/19681]
专题	清华大学
推荐引用方式 GB/T 7714	Wang, Lingmei,Ni, Weidou,Li, Zheng. Emergy and life cycle assessment of polygeneration system[C]. 见:ECOS 2006: Proceedings of the 19th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, Vols 1-3, 19th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2006), Aghia Pelagia, GREECE, Web of Science.

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