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Effects of the generator and evaporator temperature differences on a double absorption heat transformer-Different control strategies on utilizing heat sources
Wang, Hanzhi1,2,3,4; Li, Huashan1,2,3; Bu, Xianbiao1,2,3; Wang, Lingbao1,2,3,4
2017-04-15
Source PublicationENERGY CONVERSION AND MANAGEMENT
Volume138Pages:12-21
AbstractThe combination of the absorption heat transformer with renewable energy systems, like solar thermal systems, is raising more and more concern. In those combined systems the strategies on utilizing heat sources can affect system thermodynamic performance significantly. Therefore, this study presents a detailed analysis on the effect of the heat source temperature and different heat source flow patterns on the performance of a double absorption heat transformer (DAHT). A detailed comparative study is carried out to clarify the impact of the generator and evaporator temperature differences (GETD) on the coefficient of performance (COP), exergy efficient (ECOP), exergy destruction rates in the individual components and heat transfer areas needed for each component. The results show that the generator, condenser and absorber-evaporator are responsible for most of the exergy destruction rate in the DAHT system; the parallel-flow configuration (the generator temperature is equal to the evaporator temperature) performs better under the high gross temperature lift conditions; in the case of the counter flow configuration (the generator temperature is relatively higher), better performance can be obtained in both the COP and ECOP under the proper heat source temperature (85 and 95 degrees C); the fair-flow configuration (higher temperature in the evaporator) is not recommended in this paper due to no advantages found in either thermodynamic performance or system size. (C) 2017 Elsevier Ltd. All rights reserved.
SubtypeArticle
KeywordExergy Destruction Rate Double Absorption Heat Transformer Generator Temperature Evaporator Temperature Heat Source Temperature Control Strategies
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1016/j.enconman.2017.01.076
WOS Subject ExtendedThermodynamics ; Energy & Fuels ; Mechanics
WOS KeywordFLAT-PLATE COLLECTOR ; EXERGY ANALYSIS ; SINGLE-STAGE ; THERMODYNAMIC PERFORMANCE ; WATER/LITHIUM BROMIDE ; WORKING FLUID ; SYSTEM ; ENERGY ; WATER ; OPTIMIZATION
Indexed BySCI
Language英语
Funding OrganizationScience and Technology Planning Project of Guangdong Province(20138010405013) ; Pearl River S&T Nova Program of Guangzhou(2014J2200079) ; Key Laboratory of Renewable Energy, Chinese Academy of Sciences(y507j71001) ; Youth Innovation Promotion Association, Chinese Academy of Sciences(2017402)
WOS SubjectThermodynamics ; Energy & Fuels ; Mechanics
WOS IDWOS:000396948700002
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/14102
Collection中国科学院广州能源研究所
Affiliation1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
2.CAS 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.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
First Author AffilicationGuangZhou Institute of Energy Conversion,Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Wang, Hanzhi,Li, Huashan,Bu, Xianbiao,et al. Effects of the generator and evaporator temperature differences on a double absorption heat transformer-Different control strategies on utilizing heat sources[J]. ENERGY CONVERSION AND MANAGEMENT,2017,138:12-21.
APA Wang, Hanzhi,Li, Huashan,Bu, Xianbiao,&Wang, Lingbao.(2017).Effects of the generator and evaporator temperature differences on a double absorption heat transformer-Different control strategies on utilizing heat sources.ENERGY CONVERSION AND MANAGEMENT,138,12-21.
MLA Wang, Hanzhi,et al."Effects of the generator and evaporator temperature differences on a double absorption heat transformer-Different control strategies on utilizing heat sources".ENERGY CONVERSION AND MANAGEMENT 138(2017):12-21.
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