Simulation Research on a Cogeneration System of Low-Concentration Photovoltaic/Thermal Coupled with Air-Source Heat Pump

Dengxin Ai, Ke Xu, Heng Zhang, Tianheng Chen and Guilin Wang
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Dengxin Ai: Tianjin Electric Power Science & Research Institute, Tianjin 300384, China
Ke Xu: Tianjin Electric Power Science & Research Institute, Tianjin 300384, China
Heng Zhang: School of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China
Tianheng Chen: State Grid Tianjin Electric Power Company, Tianjin 300232, China
Guilin Wang: Tianjin Electric Power Science & Research Institute, Tianjin 300384, China

Energies, 2022, vol. 15, issue 3, 1-25

Abstract: In this paper, a low-concentration photovoltaic/thermal (LCPV/T) coupled with air-source heat pump (AHP) system is proposed which fully utilizes the heat generated by LCPV/T and improves the performance of the AHP. The system is built and investigated in the Transient System Simulation Program (TRNSYS) and an experimental room model is established to verify the feasibility of the system. The performance of the system is researched from the perspective of energy and exergy, and the system performance with LCPV/T and without LCPV/T is compared. Finally, the influence of the variation of key parameters of the system is studied. The results indicated that on the coldest day, the electrical efficiency of LCPV/T reached 10% which was equal to the electrical exergy efficiency. The maximum thermal efficiency was 31.88% while thermal exergy efficiency was 2.7%. The maximum coefficient of performance (COP) of AHP was 3.3, and the thermal exergy efficiency was 47%. The indoor temperature was maintained at about 20 °C in the heating season. When LCPV/T was adopted, the COP and thermal exergy efficiency of the AHP was generally higher than those without LCPV/T. In conclusion, the utilization of LCPV/T has a positive impact on the performance of the AHP.

Keywords: cogeneration; LCPV/T; air-source heat pump; TRNSYS; energetic and exergetic performance (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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