Thermodynamic analysis of the heat pump steam system with medium-low temperature heat source

doi:10.1016/j.egyr.2021.10.032

GIEC OpenIR

	Thermodynamic analysis of the heat pump steam system with medium-low temperature heat source
	Li, Shuaiqi 1,2; He, Shihui2 ; Song, Wenji2 ; Feng, Zipping 1,2
	2021-11-01
发表期刊	ENERGY REPORTS
ISSN	2352-4847
卷号	7 页码:266-278
通讯作者	Feng, Zipping(fengzp@ms.giec.ac.cn)
摘要	Heat Pump Steam technology driven by electric power has an important application value in the industrial thermal field. A cascade air source heat pump steam system (CASGHP) using in thermal workshop is proposed in this paper. A numerical model is established by EES software. The thermal performances of several feasible refrigerants in the cascade system are analyzed comparatively. The influences of intermediate cooling temperature (T-intc), the injection temperature (T-inje), the evaporating temperature (T-evap), the outlet steam temperature (T-out), gas-injection ratio (beta(g)) and specific rate of compressors pressure ratio (PRR) on system power consumption of generating a ton steam (W-per) and system COP are studied. The conclusions are as follows: When R134a is used in low temperature section of the cascade system, R245fa, R1234ze(Z) and R1336mzz(Z) used in high temperature section respectively can meet the requirements of steam generation. The COP of the CASGHP adopted R1234ze(Z) is the largest, followed by R245fa and R1336mzz(Z). There exists a maximum COP, which is 2.268, 2.286 and 2.211, respectively. When Tevap is 10. C and Tout is 120 degrees C, the optimal T-intc of CASGHP with these high temperature refrigerants is 53. C, 50.C and 53. C, the optimal Tinje is 79.C, 78.5 and 85.5, the optimal beta(g) is 0.207, 0.18 and 0.165, and the optimal PRR is 0.77, 0.71 and 0.972, respectively. The COP increases by 18.4%, 18.2% and 17.9% respectively when Tevap increases from 10 degrees C to 30 degrees C, but it decreases by 14.4%, 14.2% and 10.2% respectively when Tout increases from 100 degrees C to 120 degrees C. (C) 2021 TheAuthor(s). Published by Elsevier Ltd.
关键词	Low-grade heat source Cascade heat pump Steam generator Thermodynamic analysis
DOI	10.1016/j.egyr.2021.10.032
收录类别	SCI
语种	英语
资助项目	Guangzhou Science and Technology Program of China[201903010029]
WOS研究方向	Energy & Fuels
项目资助者	Guangzhou Science and Technology Program of China
WOS类目	Energy & Fuels
WOS记录号	WOS:000756699200024
出版者	ELSEVIER
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/344007/35852
专题	中国科学院广州能源研究所
通讯作者	Feng, Zipping
作者单位	1.Univ Sci & Technol China, Dept Thermal Sci & Energy Engn, Hefei 230026, Anhui, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
第一作者单位	中国科学院广州能源研究所
推荐引用方式 GB/T 7714	Li, Shuaiqi,He, Shihui,Song, Wenji,et al. Thermodynamic analysis of the heat pump steam system with medium-low temperature heat source[J]. ENERGY REPORTS,2021,7:266-278.
APA	Li, Shuaiqi,He, Shihui,Song, Wenji,&Feng, Zipping.(2021).Thermodynamic analysis of the heat pump steam system with medium-low temperature heat source.ENERGY REPORTS,7,266-278.
MLA	Li, Shuaiqi,et al."Thermodynamic analysis of the heat pump steam system with medium-low temperature heat source".ENERGY REPORTS 7(2021):266-278.