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Author:

Hou, Longshu (Hou, Longshu.) | Quan, Zhenhua (Quan, Zhenhua.) | Du, Boyao (Du, Boyao.) | Zhao, Yaohua (Zhao, Yaohua.)

Indexed by:

EI Scopus SCIE

Abstract:

A novel photovoltaic-thermal and air dual-heat-source evaporator was designed in this study. The evaporator was constructed using the micro heat pipe array instead of the aluminum absorbing plate to optimize the structure. Two fans were installed on the evaporator to forced convection heat transfer on the air side. Then a novel dual-heat-source heat pump system was developed, and the system was evaluated under various condi-tions. The results showed that the system exhibited excellent performance when operated under solar energy source or solar energy and air dual-heat-source modes. The coefficient of performance increased by 23.6%-31.4% compared with the air source mode. The function of the surrounding air under the solar energy and air dual-heat-source mode varied between exothermic and endothermic effect. The amount of heat absorbed from the sur-rounding air under the solar energy and air dual-heat-source mode gradually decreased with an increase in the system operation time. The electrical, thermal and overall efficiencies as well as coefficient of performance of the system significantly fluctuated with varying solar radiation and the surrounding air temperature. The findings provide a basis for further optimization of the system.

Keyword:

Micro heat pipe array Photovoltaic-thermal Direct-expansion heat pump Coefficient of performance Dual-heat-source evaporator

Author Community:

  • [ 1 ] [Hou, Longshu]Beijing Univ Technol, Beijing Key Lab Green Bldg & Energy Efficiency Tec, 100 Pingleyuan, Beijing 100124, Peoples R China
  • [ 2 ] [Quan, Zhenhua]Beijing Univ Technol, Beijing Key Lab Green Bldg & Energy Efficiency Tec, 100 Pingleyuan, Beijing 100124, Peoples R China
  • [ 3 ] [Du, Boyao]Beijing Univ Technol, Beijing Key Lab Green Bldg & Energy Efficiency Tec, 100 Pingleyuan, Beijing 100124, Peoples R China
  • [ 4 ] [Zhao, Yaohua]Beijing Univ Technol, Beijing Key Lab Green Bldg & Energy Efficiency Tec, 100 Pingleyuan, Beijing 100124, Peoples R China
  • [ 5 ] [Hou, Longshu]Minist Housing Urban Rural Dev Peoples Republ Chin, Ctr Sci & Technol & Industrializat Dev, 9 Sanlihe Rd, Beijing 100835, Peoples R China

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Source :

APPLIED THERMAL ENGINEERING

ISSN: 1359-4311

Year: 2023

Volume: 230

6 . 4 0 0

JCR@2022

ESI Discipline: ENGINEERING;

ESI HC Threshold:19

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 1

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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