Development of a metal hydride refrigeration system as an exhaust gas-driven automobile air conditioner

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	Development of a metal hydride refrigeration system as an exhaust gas-driven automobile air conditioner
	F. Qin; J. P. Chen; M. Q. Lu; Z. J. Chen; Y. M. Zhou
	2007
发表期刊	Renewable Energy
ISSN	0960-1481
卷号	32 期号:12 页码:2034-2052
摘要	Aiming at developing exhaust gas-driven automobile air conditioners, two types of systems varying in heat carriers were preliminarily designed. A new hydride pair LaNi(4.61)Wn(0.26)Al(0.13)/La0.6Y0.4Ni4.8Mn0.2 was developed working at 120-200 degrees C/20-50 degrees C/-10-0 degrees C. P-C isotherms and reaction kinetics were tested. Reaction enthalpy, entropy and theoretical cycling coefficient of performance (COP) were deducted from Van't-Hoff diagram. Test results showed that the hydride pair has flat plateau slopes, fast reaction dynamics and small hystereses; the reaction enthalpy of the refrigeration hydride is -27.1 kJ/mol H-2 and system theoretical COP is 0.711. Mean particle sizes during cycles were verified to be an intrinsic property affected by constitution, heat treatment and cycle numbers rather than initial grain sizes. Based on this work pair, cylindrical reactors were designed and a function proving metal hydride intermittent refrigeration system was constructed with heat conducting oil as heat source and water as heat sink. The reactor equivalent thermal conductivity is merely 1.3 W/(m K), which still has not meet practical requirement. Intermittent refrigeration cycles were achieved and the average cooling power is 84.6 W at 150 degrees C/30 degrees C/0 degrees C with COP being 0.26. The regulations of cycling performance and minimum refrigeration temperature (MRT) were determined by altering heat source temperature. Results showed that cooling power and system COP increase while MRT decreases with the growth of heat source temperature. This study develops a new hydride pair and confirms its application in automobile refrigeration systems, while their heat transfer properties still need to be improved for better performance. (c) 2006 Elsevier Ltd. All rights reserved.
部门归属	shanghai jiao tong univ, inst refrigerat & cryogen engn, shanghai 200030, peoples r china. chinese acad sci, inst met res, ctr engn, shenyang 110016, liaoning, peoples r china.;qin, f (reprint author), shanghai jiao tong univ, inst refrigerat & cryogen engn, shanghai 200030, peoples r china;fqin@mail.sjtu.edu.cn
关键词	Metal Hydride Hydrogen Refrigeration Exhaust Gas Automobile Heat-pump Operating Characteristics Cooling System Alloys Pair
URL	查看原文
WOS记录号	WOS:000247765600006
引用统计	被引频次：58[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/33786
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	F. Qin,J. P. Chen,M. Q. Lu,et al. Development of a metal hydride refrigeration system as an exhaust gas-driven automobile air conditioner[J]. Renewable Energy,2007,32(12):2034-2052.
APA	F. Qin,J. P. Chen,M. Q. Lu,Z. J. Chen,&Y. M. Zhou.(2007).Development of a metal hydride refrigeration system as an exhaust gas-driven automobile air conditioner.Renewable Energy,32(12),2034-2052.
MLA	F. Qin,et al."Development of a metal hydride refrigeration system as an exhaust gas-driven automobile air conditioner".Renewable Energy 32.12(2007):2034-2052.