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

doi:10.1016/j.enconman.2019.06.021

GIEC OpenIR

	A solar-assisted double absorption heat transformer: Off-design performance and optimum control strategy
	Wang, Hanzhi 1,2,3; Li, Huashan1,2,3 ; Wang, Lingbao 1,2,3; Bu, Xianbiao1,2,3 ; Zeng, Jie 4; Xie, Ning 4; Xu, Qi 4
	2019-09-15
发表期刊	ENERGY CONVERSION AND MANAGEMENT
ISSN	0196-8904
卷号	196 页码:614-622
通讯作者	Li, Huashan(lihs@ms.giec.ac.cn)
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.
关键词	Solar thermal system Double absorption heat transformer Off-design performance Optimization Control strategy
DOI	10.1016/j.enconman.2019.06.021
关键词[WOS]	STEAM-GENERATION ; SINGLE-STAGE ; SYSTEM ; OPTIMIZATION ; DESALINATION ; SIMULATION ; EXERGY ; ENERGY
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2017YFB0903201] ; Youth Innovation Promotion Association, Chinese Academy of Sciences[2017402]
WOS研究方向	Thermodynamics ; Energy & Fuels ; Mechanics
项目资助者	National Key Research and Development Program of China ; Youth Innovation Promotion Association, Chinese Academy of Sciences
WOS类目	Thermodynamics ; Energy & Fuels ; Mechanics
WOS记录号	WOS:000484881400047
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：4[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/344007/25556
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
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	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.