Experimental performance study of a PV/T–air source heat pump coupled system in cold regions

IF 7.5 2区工程技术 Q2 ENERGY & FUELS

Applied Thermal Engineering Pub Date : 2026-09-01 Epub Date: 2026-08-31 DOI:10.1016/j.applthermaleng.2026.132992

Xilian Han, Yimeng Hu, Zhanxiang Qiao, Ao Mou, Xu Hong, Yong Tian, Wenqin Wang

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引用次数: 0

Abstract

The coupling of photovoltaic/thermal (PV/T) technology with an air source heat pump (ASHP) can improve system heating performance and the comprehensive utilization of solar energy. However, the performance of conventional solar-assisted heat pump systems decreases significantly under insufficient solar irradiation, and systematic experimental studies on different coupling operation modes of PV/T and ASHP under heating conditions, as well as their performance differences, remain limited. To investigate the effects of different coupling modes, this study proposes a photovoltaic/thermal-air source heat pump (PV/T-ASHP) system. In this system, thermal coupling between the PV/T module and the evaporator side of the ASHP is achieved in series. Through valve switching and the start-stop control of the axial-flow fan, four operation modes were realized: conventional ASHP mode, photovoltaic-air source heat pump (PV-ASHP) mode with only PV power generation coupled to the ASHP, PV/T-ASHP mode with both PV power generation and PV/T evaporator-side thermal coupling, and photovoltaic/thermal-optimized air source heat pump (PV/T-OASHP) mode with optimized PV/T-assisted operation. Based on the established experimental platform, the thermoelectric performance of the system under different operation modes was comparatively analyzed. The results show that, under experimental conditions with an ambient temperature of −1.70–5.90 °C and a solar irradiance of 48–738 W/m², PV/T operation increased the average power generation of the system by 8.80% compared with conventional PV operation. From the perspective of overall system performance, the average input power of the PV/T-ASHP mode was 4.50% lower than that of the ASHP mode. The comparison of different coupling modes indicates that the PV/T-ASHP mode exhibited the best operating performance, with a system COP of 3.42, which was 18.75%, 2.09%, and 1.79% higher than those of the ASHP, PV/T-OASHP, and PV-ASHP modes, respectively.

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寒冷地区PV/ t -空气源热泵耦合系统试验性能研究

将光伏/热（PV/T）技术与空气源热泵（ASHP）耦合，可以提高系统供暖性能和太阳能的综合利用。然而，在太阳辐照不足的情况下，传统的太阳能辅助热泵系统的性能明显下降，并且在加热条件下，光伏/T与空气源热泵不同耦合运行方式的系统实验研究以及两者的性能差异仍然有限。为了研究不同耦合模式的影响，本研究提出了一个光伏/热空气源热泵（PV/T-ASHP）系统。在本系统中，PV/T组件与空气源热泵蒸发器侧的热耦合是串联的。通过阀门开关和轴流风机的启停控制，实现了四种运行模式：常规空气源热泵模式、仅光伏发电与空气源热泵耦合的PV-ASHP模式、光伏发电与PV/T蒸发器侧热耦合的PV/T-ASHP模式、PV/T- oashp辅助优化运行的光伏/热优化空气源热泵模式。在搭建的实验平台上，对比分析了系统在不同工作模式下的热电性能。结果表明，在环境温度为- 1.70 ~ 5.90℃、太阳辐照度为48 ~ 738 W/m2的实验条件下，PV/T运行比常规PV运行平均发电量提高8.80%。从系统整体性能来看，PV/T-ASHP模式的平均输入功率比空气源热泵模式低4.50%。不同耦合方式的比较表明，PV/T-ASHP模式运行性能最佳，系统COP为3.42，分别比ASHP、PV/T-OASHP和PV-ASHP模式高18.75%、2.09%和1.79%。

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来源期刊

Applied Thermal Engineering 工程技术-工程：机械

CiteScore

11.30

自引率

15.60%

发文量

1474

审稿时长

57 days

期刊介绍： Applied Thermal Engineering disseminates novel research related to the design, development and demonstration of components, devices, equipment, technologies and systems involving thermal processes for the production, storage, utilization and conservation of energy, with a focus on engineering application. The journal publishes high-quality and high-impact Original Research Articles, Review Articles, Short Communications and Letters to the Editor on cutting-edge innovations in research, and recent advances or issues of interest to the thermal engineering community.