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

doi:10.1209/0295-5075/127/68004

	The performance of finite-time refrigerators at the maximum cooling load with a specified power input
	Guo, Jian; Huang, Wenbo; Jiang, Fangming
刊名	EPL
	2019-09-01
卷号	127 期号:6 页码:6
ISSN号	0295-5075
DOI	10.1209/0295-5075/127/68004
通讯作者	Guo, Jian()
英文摘要	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
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关键词	ECOLOGICAL OPTIMIZATION CRITERION ; HEAT ; BOUNDS ; CYCLE
WOS研究方向	Physics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000518761500004
资助机构	Guangdong Science and Technology Department ; Guangzhou Scientific and Technological Development Plan ; CAS PIFI Visiting Scientist Fellowship
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/26555]
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.