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Author:

Xu, Junfang (Xu, Junfang.) | Zhao, Yaohua (Zhao, Yaohua.) (Scholars:赵耀华) | Quan, Zhenhua (Quan, Zhenhua.) | Wang, Gang (Wang, Gang.) | Wang, Jieteng (Wang, Jieteng.)

Indexed by:

EI Scopus SCIE

Abstract:

Several renewable energy sources based on composite heat pump technology, which has been gaining increasing attention, are combined for application in building areas to obtain high operation efficiency and maximize energy saving. In this study, two kinds of air-water dual-source composite evaporators, namely, evA and evB (a new type), are proposed and air-water dual-source composite heat pump (AWSHP) systems with evA and evB are established. The AWSHP-evA and AWSHP-evB systems can be run in different modes, including air source heating mode (ASHM), water source heating mode (WSHM), and air-water source heating mode (AWSHM). The AWSHP-evB system has several advantages over the AWSHP-evA system, such as better coefficient of performance (COP), wider ambient temperature range for the efficient operation of AWSHM, and several different defrosting modes. A comparison of the experimental results obtained under different test conditions shows that COPWSHM of AWSHP-evB can be enhanced by 6.3% to 9.8%, whereas COPASHM of AWSHP-evA and AWSHP-evB are identical. Meanwhile, COPAWSHM of AWSHP-evB system can be enhanced by 8.8% to 13.3% in test conditions when hot water temperature is increased from 18 +/- 1.0 degrees C to 51 +/- 1.0 degrees C. (C) 2017 Published by Elsevier Ltd.

Keyword:

Coefficient of performance Heating mode Dual-source heat pump Composite evaporator

Author Community:

  • [ 1 ] [Xu, Junfang]Beijing Univ Technol, Beijing Key Lab Green Built Environm & Energy Eff, Beijing 100124, Peoples R China
  • [ 2 ] [Zhao, Yaohua]Beijing Univ Technol, Beijing Key Lab Green Built Environm & Energy Eff, Beijing 100124, Peoples R China
  • [ 3 ] [Quan, Zhenhua]Beijing Univ Technol, Beijing Key Lab Green Built Environm & Energy Eff, Beijing 100124, Peoples R China
  • [ 4 ] [Wang, Gang]Beijing Univ Technol, Beijing Key Lab Green Built Environm & Energy Eff, Beijing 100124, Peoples R China
  • [ 5 ] [Xu, Junfang]Beijing Sci & Technol Inst Housing & Urban Rural, Beijing, Peoples R China
  • [ 6 ] [Wang, Jieteng]Beijing Sci & Technol Inst Housing & Urban Rural, Beijing, Peoples R China

Reprint Author's Address:

  • [Quan, Zhenhua]Beijing Univ Technol, Beijing Key Lab Green Built Environm & Energy Eff, Beijing 100124, Peoples R China

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Source :

APPLIED THERMAL ENGINEERING

ISSN: 1359-4311

Year: 2018

Volume: 141

Page: 483-493

6 . 4 0 0

JCR@2022

ESI Discipline: ENGINEERING;

ESI HC Threshold:156

JCR Journal Grade:1

Cited Count:

WoS CC Cited Count: 29

SCOPUS Cited Count: 29

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 8

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