Comparative analysis of conventional and low-GWP refrigerants with ionic liquid used for compression-assisted absorption cooling cycles

doi:10.1016/j.applthermaleng.2020.115145

	Comparative analysis of conventional and low-GWP refrigerants with ionic liquid used for compression-assisted absorption cooling cycles
	Wu, Wei 1; Leung, Michael 1; Ding, Zhixiong 1; Huang, Hongyu 2; Bai, Yu 2; Deng, Lisheng 2
刊名	APPLIED THERMAL ENGINEERING
	2020-05-25
卷号	172 页码:15
关键词	Renewable cooling Waste cooling Low global warming potential Novel working pair Ionic liquid Compression-assisted absorption cycle
ISSN号	1359-4311
DOI	10.1016/j.applthermaleng.2020.115145
通讯作者	Wu, Wei(weiwu53@cityu.edu.hk) ; Bai, Yu(baiyu@ms.giec.ac.cn)
英文摘要	To address the problems of conventional absorption technologies, various working pairs consisting of low-global-warming-potential hydrofluorocarbons/hydrofluoroolefins and ionic liquid were numerically investigated for two compression-assisted absorption cooling cycles driven by heat sources at lower temperatures. The property prediction model and thermodynamic performance model were established and verified. The performance improvements were evaluated and the compression ratio was optimized. With the compression-assisted absorption cycle, the coefficient of performance (COP) was enhanced from 0.191-0.463 to 0.366-0.670, while the minimum generation temperature was reduced by about 20 degrees C, reaching 45 degrees C. For both basic and compression-assisted absorption cycles, difluoromethane yielded the highest COP, followed by fluoroethane and 1,1-difluoroethane with slightly lower COPs; 2,3,3,3-tetrafluoropropene performed the worst in most conditions; 1,1,1,2-tetrafluoroethane performed worse than trans-1,3,3,3-tetrafluoropropene using the basic cycle but outperformed trans-1,3,3,3-tetrafluoropropene using the compression-assisted absorption cycle. The thermal COP varies similarly to but higher than the COP, while the mechanical COPs are much higher for all the working pairs, reaching 11-14 (R152a showing the highest) with a CR of 1.5. The mechanical COP decreases dramatically with the compression ratio. For the low-pressure compression-assisted absorption cycle with a generation temperature of 70 degrees C, the optimal compression ratios were 1.9-3.4 with the maximum COPs of 0.546-0.663 and were 1.3-2.2 with the maximum exergy COPs of 0.192-0.289. The low-pressure compression-assisted absorption cycle was better than the high-pressure compression-assisted absorption cycle due to the higher cycle efficiency and lower compressor discharge temperature. This study provides suggestions on the selection of compression-assisted absorption cycles, working pairs and optimal parameters for renewable/waste cooling.
资助项目	Research Grants Council of Hong Kong[CityU 21201119] ; Guangdong Basic and Applied Basic Research Foundation[2019A1515011177]
WOS关键词	THERMODYNAMIC ANALYSIS ; HEAT-PUMP ; PERFORMANCE SIMULATION ; SYSTEM ; EQUILIBRIUM ; WATER ; TRANS-1,3,3,3-TETRAFLUOROPROPENE ; INTEGRATION ; ABSORBENTS ; RECOVERY
WOS研究方向	Thermodynamics ; Energy & Fuels ; Engineering ; Mechanics
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000525326500004
资助机构	Research Grants Council of Hong Kong ; Guangdong Basic and Applied Basic Research Foundation
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/27052]
专题	中国科学院广州能源研究所
通讯作者	Wu, Wei; Bai, Yu
作者单位	1.City Univ Hong Kong, Sch Energy & Environm, Hong Kong, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Urban Rural Mine Integrated Technol Res Team, Guangzhou, Peoples R China
推荐引用方式 GB/T 7714	Wu, Wei,Leung, Michael,Ding, Zhixiong,et al. Comparative analysis of conventional and low-GWP refrigerants with ionic liquid used for compression-assisted absorption cooling cycles[J]. APPLIED THERMAL ENGINEERING,2020,172:15.
APA	Wu, Wei,Leung, Michael,Ding, Zhixiong,Huang, Hongyu,Bai, Yu,&Deng, Lisheng.(2020).Comparative analysis of conventional and low-GWP refrigerants with ionic liquid used for compression-assisted absorption cooling cycles.APPLIED THERMAL ENGINEERING,172,15.
MLA	Wu, Wei,et al."Comparative analysis of conventional and low-GWP refrigerants with ionic liquid used for compression-assisted absorption cooling cycles".APPLIED THERMAL ENGINEERING 172(2020):15.