EXPERIMENTAL STUDY ON MULTIFUNCTIONAL PERFORMANCE OF SOLAR PHOTOVOLTAIC THERMAL COMBINED DUAL SOURCE HEAT PUMP SYSTEM

Wei Xiadan; Fu Yunzhun; Yang Fang

doi:10.19912/j.0254-0096.tynxb.2024-0864

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (9) : 729-735. DOI: 10.19912/j.0254-0096.tynxb.2024-0864

EXPERIMENTAL STUDY ON MULTIFUNCTIONAL PERFORMANCE OF SOLAR PHOTOVOLTAIC THERMAL COMBINED DUAL SOURCE HEAT PUMP SYSTEM

Wei Xiadan, Fu Yunzhun, Yang Fang

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Abstract

In order to study the operational characteristics of a combined solar photovoltaic-thermal system and multi-source heating system, an experimental platform for a solar photovoltaic-thermal combined dual-source heat pump system was constructed. The system was tested in heating, cooling, and hot water production modes, with a focus on analyzing the heat output, COP, electricity consumption, etc., when heating from the PV/T source and air source in heating hot water production and heating modes. The impact of heating from the PV/T water tank on the electrical and thermal efficiency of the PV/T panel was also examined, along with an analysis of the system's energy saving performance during actual operation. The experimental results indicate that in heating mode during cold and sunny winter weather, the average COP of the heat pump unit is 2.18, while the system's average COP is 3.17, with heating from the PV/T source accounting for 61.57% of the operating time. In the hot water production mode, at the same heating temperature, the heat pump performance is superior when heating from the PV/T source compared to heating from the air source. Heating from the PV/T water tank can effectively reduce the temperature of the PV/T panel, thereby enhancing its electrical and thermal efficiency.

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heat pump systems / PV modules / coefficient of performance / electrical efficiency / thermal efficiency

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Wei Xiadan, Fu Yunzhun, Yang Fang. EXPERIMENTAL STUDY ON MULTIFUNCTIONAL PERFORMANCE OF SOLAR PHOTOVOLTAIC THERMAL COMBINED DUAL SOURCE HEAT PUMP SYSTEM[J]. Acta Energiae Solaris Sinica. 2025, 46(9): 729-735 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0864

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