A solar-assisted double absorption heat transformer: Off-design performance and optimum control strategy

doi:10.1016/j.enconman.2019.06.021

	A solar-assisted double absorption heat transformer: Off-design performance and optimum control strategy
	Wang, Hanzhi 1,2,3; Li, Huashan 1,2,3; Wang, Lingbao 1,2,3; Bu, Xianbiao 1,2,3; Zeng, Jie 4; Xie, Ning 4; Xu, Qi 4
刊名	ENERGY CONVERSION AND MANAGEMENT
	2019-09-15
卷号	196 页码:614-622
关键词	Solar thermal system Double absorption heat transformer Off-design performance Optimization Control strategy
ISSN号	0196-8904
DOI	10.1016/j.enconman.2019.06.021
通讯作者	Li, Huashan(lihs@ms.giec.ac.cn)
英文摘要	Using solar-assisted absorption heat transformers to provide high-temperature process heat over 100 degrees C has raised increasing concern in recent years for its energy saving and environmentally friendly characteristics. In this study, a solar-assisted double absorption heat transformer is proposed and analyzed theoretically. The optimum off-design performance is investigated to develop high-efficient control strategies under various climatic conditions (solar radiation intensity I and ambient temperature t(amb)). In order to maximize the heating capacity and overall system thermal efficiency ((Q) over dot(h) and eta(sys)), the conjugate directions method is applied for searching the optimum operation parameters including the strong solution mass flow rate and bypass ratio ((m) over dot(sol) and BP). The results show that the eta(sys )can reach 20.3% with the heating temperature at 130 degrees C under typical climatic conditions (I = 600 W.m(-2) and t(amb) = 25 degrees C). Under off-design conditions, the (m) over dot(sol) and BP exist optimum values, at which the (Q) over dot(h) reaches the maximum value. Specifically, under typical operation conditions, the maximum (Q) over dot(h) can be obtained as the m(sol) = 90kg.h(-1) and BP = 0.8. Under higher I and t(amb) conditions, the control strategies of increasing the collector temperature and (m) over dot(sol) are very practical to enhance the system performance.
资助项目	National Key Research and Development Program of China[2017YFB0903201] ; Youth Innovation Promotion Association, Chinese Academy of Sciences[2017402]
WOS关键词	STEAM-GENERATION ; SINGLE-STAGE ; SYSTEM ; OPTIMIZATION ; DESALINATION ; SIMULATION ; EXERGY ; ENERGY
WOS研究方向	Thermodynamics ; Energy & Fuels ; Mechanics
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000484881400047
资助机构	National Key Research and Development Program of China ; Youth Innovation Promotion Association, Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/25555]
专题	中国科学院广州能源研究所
通讯作者	Li, Huashan
作者单位	1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China 2.Chinese Acad Sci, Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China 3.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Guangdong, Peoples R China 4.Elect Power Res Inst Guangdong Power Grid Co Ltd, Guangzhou 510080, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Wang, Hanzhi,Li, Huashan,Wang, Lingbao,et al. A solar-assisted double absorption heat transformer: Off-design performance and optimum control strategy[J]. ENERGY CONVERSION AND MANAGEMENT,2019,196:614-622.
APA	Wang, Hanzhi.,Li, Huashan.,Wang, Lingbao.,Bu, Xianbiao.,Zeng, Jie.,...&Xu, Qi.(2019).A solar-assisted double absorption heat transformer: Off-design performance and optimum control strategy.ENERGY CONVERSION AND MANAGEMENT,196,614-622.
MLA	Wang, Hanzhi,et al."A solar-assisted double absorption heat transformer: Off-design performance and optimum control strategy".ENERGY CONVERSION AND MANAGEMENT 196(2019):614-622.