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Comparison of a novel un-baffled and a conventional shell-and-tube dry-expansion evaporator
Yin, Y. D.; Zhu, D. S.; Sun, J. F.; Li, X. Z.; Zhang, J. N.; Lin, C. D.
2017-02-25
Source PublicationAPPLIED THERMAL ENGINEERING
Volume113Pages:1137-1145
AbstractTo overcome the disadvantage of the poor heat transfer performance of the conventional baffle shell-and tube dry-expansion evaporator (BSTDEE), a novel un-baffled shell-and-tube dry-expansion evaporator (USTDEE), for use in air source heat pumps (ASHPs), was developed and investigated. An experimental platform was built to test the performance of the USTDEE-ASHP and BSTDEE-ASHP. Several parameters, including the overall heat transfer coefficient (U) of the USTDEE and BSTDEE, cooling capacity (Q(e)), heating capacity (Q(c)), and coefficient of performance (COP) of the ASHP were investigated. The results show that the COP of the USTDEE-ASHP is higher than that of the BSTDEE-ASHP. The refrigerant charge of the former unit is less than that of the latter, whereas the water pressure drop of the former is greater than that of the latter. With increasing evaporating temperature (T-e), outside tube Reynolds number (Re-o) and heat flux (q(i)), the heat transfer performance of the USTDEE is enhanced and is better than that of the BSTDEE. With an increase in condensing temperature (T-c), the heat transfer performance of the USTDEE and BSTDEE decreases, and the former is worse than the latter. This research indicates that the USTDEE has the advantages of higher heat transfer performance; compact volume and less heat transfer area and has broad prospects in air conditioning heat pump applications. (C) 2016 Elsevier Ltd. All rights reserved.
SubtypeArticle
KeywordAir Source Heat Pumps (Ashps) Un-baffled Shell-and-tube Dry-expansion Evaporator Coefficient Of Performance (Cop) Enhanced Heat Transfer
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
DOI10.1016/j.applthermaleng.2016.11.037
WOS Subject ExtendedThermodynamics ; Energy & Fuels ; Engineering ; Mechanics
WOS KeywordSIDE HEAT-TRANSFER ; HELICAL BAFFLES ; NUMERICAL-SIMULATION ; EXCHANGERS ; PERFORMANCE ; FLOW ; SYSTEM
Indexed BySCI
Language英语
Funding OrganizationShunde District of Foshan City Government Office(365) ; (2014HK100283)
WOS SubjectThermodynamics ; Energy & Fuels ; Engineering, Mechanical ; Mechanics
WOS IDWOS:000394723300107
Citation statistics
Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/14036
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.Chinese Acad Sci, Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China
3.Guangdong Key Lab New & Renewable Energy Res & De, Guangzhou 510640, Guangdong, Peoples R China
Recommended Citation
GB/T 7714
Yin, Y. D.,Zhu, D. S.,Sun, J. F.,et al. Comparison of a novel un-baffled and a conventional shell-and-tube dry-expansion evaporator[J]. APPLIED THERMAL ENGINEERING,2017,113:1137-1145.
APA Yin, Y. D.,Zhu, D. S.,Sun, J. F.,Li, X. Z.,Zhang, J. N.,&Lin, C. D..(2017).Comparison of a novel un-baffled and a conventional shell-and-tube dry-expansion evaporator.APPLIED THERMAL ENGINEERING,113,1137-1145.
MLA Yin, Y. D.,et al."Comparison of a novel un-baffled and a conventional shell-and-tube dry-expansion evaporator".APPLIED THERMAL ENGINEERING 113(2017):1137-1145.
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