Heat Recuperation for the Self-Condensing CO<sub>2</sub> Transcritical Power Cycle

doi:10.1007/s11630-024-1977-1

CORC > 力学研究所 > 中国科学院力学研究所 > 高温气体动力学国家重点实验室

	Heat Recuperation for the Self-Condensing CO₂ Transcritical Power Cycle
	Pan, Lisheng 2; Shi, Weixiu 1; Sun, Yin 1; Sun, Yiwei 1; Wei, Xiaolin 2
刊名	JOURNAL OF THERMAL SCIENCE
	2024-04-16
页码	12
关键词	CO2 transcritical power cycle heat recuperation process self-condensing
ISSN号	1003-2169
DOI	10.1007/s11630-024-1977-1
通讯作者	Pan, Lisheng(panlisheng@imech.ac.cn)
英文摘要	The supercritical CO2 Brayton cycle has potential to be used in electricity generation occasions with its advantages of high efficiency and compact structure. Focusing on a so-called self-condensing CO2 transcritical power cycle, a model was established and four different layouts of heat recuperation process were analyzed, a without-recuperation cycle, a post-recuperation cycle, a pre-recuperation cycle and a re-recuperation cycle. The results showed that the internal normal cycle's share of the whole cycle increases with increasing the cooling pressure and decreasing the final cooled temperature. Heat load in the supercritical heater decreases with increasing the cooling pressure. From perspective of performance, the re-recuperation cycle and the pre-recuperation cycle have similar thermal efficiency which is much higher than other two layouts. Both thermal efficiency and net power output have a maximum value with the cooling pressure, except in the condition with the final cooled temperature of 31(degrees)C. Considering both the complexity and the economy, the pre-recuperation cycle is more applicable than the other options. Under 35(degrees)C of the final cooled temperature, the thermal efficiency of the pre-recuperation cycle reaches the peak 0.34 with the cooling pressure of 8.4 MPa and the maximum net power output is 2355.24 kW at 8.2 MPa of the cooling pressure.
资助项目	National Natural Science Foundation of China[51776215] ; National Natural Science Foundation of China[12372237]
WOS关键词	BRAYTON CYCLE ; PERFORMANCE ; GENERATION ; TEMPERATURE ; ORC
WOS研究方向	Thermodynamics ; Engineering
语种	英语
WOS记录号	WOS:001204774500001
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/94975]
专题	力学研究所_高温气体动力学国家重点实验室
通讯作者	Pan, Lisheng
作者单位	1.Beijing Univ Civil Engn & Architecture, Sch Environm & Energy Engn, Beijing 100044, Peoples R China 2.Chinese Acad Sci, State Key Lab High Temp Gas Dynam, Inst Mech, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Pan, Lisheng,Shi, Weixiu,Sun, Yin,et al. Heat Recuperation for the Self-Condensing CO₂ Transcritical Power Cycle[J]. JOURNAL OF THERMAL SCIENCE,2024:12.
APA	Pan, Lisheng,Shi, Weixiu,Sun, Yin,Sun, Yiwei,&Wei, Xiaolin.(2024).Heat Recuperation for the Self-Condensing CO₂ Transcritical Power Cycle.JOURNAL OF THERMAL SCIENCE,12.
MLA	Pan, Lisheng,et al."Heat Recuperation for the Self-Condensing CO₂ Transcritical Power Cycle".JOURNAL OF THERMAL SCIENCE (2024):12.