The performance of finite-time refrigerators at the maximum cooling load with a specified power input

doi:10.1209/0295-5075/127/68004

GIEC OpenIR

	The performance of finite-time refrigerators at the maximum cooling load with a specified power input
	Guo, Jian; Huang, Wenbo; Jiang, Fangming
	2019-09-01
发表期刊	EPL
ISSN	0295-5075
卷号	127 期号:6 页码:6
通讯作者	Guo, Jian()
摘要	The optimum coefficient of performance (COP) of the finite-time refrigerators based on the maximization of the cooling load at a specified power input is investigated. The Lagrange function for variational calculus is then established to mathematically handle the optimization process. The optimized COP is found to be dependent on the temperature and conductance of the thermal reservoirs as well as the irreversibility involved in the heat transfer processes. Thermodynamic explanations are put forward to recommend higher thermal conductance for the cold reservoir compared to that of the hot reservoir so that a higher COP value can be obtained. A dimensionless irreversibility factor, which reflects the irreversible extent of the finite-time heat transfer between the working substance and the thermal reservoirs, is defined and shown to have significant impact on the COP. The optimized COP value tends to that of the Carnot cycle in the limit of reversible processes. Finally, an algebraic expression describing the optimal COP in terms of the key parameters is offered to simplify the numerical representation of the results and also to facilitate the future follow-up studies. Copyright (C) EPLA, 2019
DOI	10.1209/0295-5075/127/68004
关键词[WOS]	ECOLOGICAL OPTIMIZATION CRITERION ; HEAT ; BOUNDS ; CYCLE
收录类别	SCI
语种	英语
资助项目	Guangdong Science and Technology Department[2017B010120003] ; Guangdong Science and Technology Department[2015A030308019] ; Guangdong Science and Technology Department[2016A030313172] ; Guangzhou Scientific and Technological Development Plan[201804020020] ; CAS PIFI Visiting Scientist Fellowship[2018VEB0003]
WOS研究方向	Physics
项目资助者	Guangdong Science and Technology Department ; Guangzhou Scientific and Technological Development Plan ; CAS PIFI Visiting Scientist Fellowship
WOS类目	Physics, Multidisciplinary
WOS记录号	WOS:000518761500004
出版者	IOP PUBLISHING LTD
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/26556
专题	中国科学院广州能源研究所
通讯作者	Guo, Jian
作者单位	Chinese Acad Sci, Lab Adv Energy Syst, Guangdong Key Lab New & Renewable Energy Res & De, CAS Key Lab Renewable Energy,Guangzhou Inst Energ, Guangzhou 510640, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Guo, Jian,Huang, Wenbo,Jiang, Fangming. The performance of finite-time refrigerators at the maximum cooling load with a specified power input[J]. EPL,2019,127(6):6.
APA	Guo, Jian,Huang, Wenbo,&Jiang, Fangming.(2019).The performance of finite-time refrigerators at the maximum cooling load with a specified power input.EPL,127(6),6.
MLA	Guo, Jian,et al."The performance of finite-time refrigerators at the maximum cooling load with a specified power input".EPL 127.6(2019):6.