Performance comparison of two low-CO2 emission solar/methanol hybrid combined cycle power systems

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	Performance comparison of two low-CO2 emission solar/methanol hybrid combined cycle power systems
	Li, Yuanyuan 1; Zhang, Na 2; Lior, Noam 3
刊名	APPLIED ENERGY
	2015-10-01
卷号	155 页码:740-752
关键词	Hybrid power systems Low/middle temperature solar heat Methanol conversion to syngas Thermo-chemical integration Low CO2 emission Pre-combustion decarbonization
英文摘要	Two novel hybrid combined cycle power systems that use solar heat and methanol, and integrate CO2 capture, are proposed and analyzed, one based on solar-driven methanol decomposition and the other on solar-driven methanol reforming. The high methanol conversion rates at relatively low temperatures offer the advantage of using the solar heat at only 200-300 degrees C to drive the syngas production by endothermic methanol conversions and its conversion to chemical energy. Pre-combustion decarbonization is employed to produce CO2-free fuel from the fully converted syngas, which is then burned to produce heat at the high temperature for power generation in the proposed advanced combined cycle systems. To improve efficiency, the systems' configurations were based on the principle of cascade use of multiple heat sources of different temperatures. The thermodynamic performance of the hybrid power systems at its design point is simulated and evaluated. The results show that the hybrid systems can attain an exergy efficiency of about 55%, and specific CO2 emissions as low as 34 g/kW h. Compared to a gas/steam combined cycle with flue gas CO2 capture, the proposed solar-assisted system CO2 emissions are 36.8% lower, and a fossil fuel saving ratio of similar to 30% is achievable with a solar thermal share of similar to 20%. The system integration predicts high efficiency conversion of solar heat and low-energy-penalty CO2 capture, with the additional advantage that solar heat is at relatively low temperature where its collection is cheaper and simpler. The systems' components are robust and in common use, and the proposed hybridization approach can be also used with similar benefits by replacing the solar heat input with other low heat sources, and the system integration achieves the dual-purpose of clean use of fossil fuel and high-efficiency conversion of solar heat at the Same time. (C) 2015 Elsevier Ltd. All rights reserved.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Energy & Fuels ; Engineering, Chemical
研究领域[WOS]	Energy & Fuels ; Engineering
关键词[WOS]	TURBINE COMBINED-CYCLE ; SOLAR THERMAL-ENERGY ; METHANOL DECOMPOSITION ; POLYGENERATION SYSTEM ; EXERGY ANALYSIS ; CO2 EMISSION ; PLANT ; INTEGRATION ; SIMULATION ; HYDROGEN
收录类别	SCI
语种	英语
WOS记录号	WOS:000360950900060
公开日期	2015-12-22
内容类型	期刊论文
源URL	[http://ir.etp.ac.cn/handle/311046/98959]
专题	工程热物理研究所_中国科学院工程热物理所（论文库）_期刊论文（SCI）
作者单位	1.North China Elect Power Univ, Minist Educ, Key Lab Condit Monitoring & Control Power Plant E, Beijing 102206, Peoples R China 2.Chinese Acad Sci, Inst Engn Thermophys, Beijing 100190, Peoples R China 3.Univ Penn, Dept Mech Engn & Appl Mech, Philadelphia, PA 19104 USA
推荐引用方式 GB/T 7714	Li, Yuanyuan,Zhang, Na,Lior, Noam. Performance comparison of two low-CO2 emission solar/methanol hybrid combined cycle power systems[J]. APPLIED ENERGY,2015,155:740-752.
APA	Li, Yuanyuan,Zhang, Na,&Lior, Noam.(2015).Performance comparison of two low-CO2 emission solar/methanol hybrid combined cycle power systems.APPLIED ENERGY,155,740-752.
MLA	Li, Yuanyuan,et al."Performance comparison of two low-CO2 emission solar/methanol hybrid combined cycle power systems".APPLIED ENERGY 155(2015):740-752.