Experimental study of dual-source heat pump coupled with water-cooled photovoltaic/thermal system

IF 6.1 2区工程技术 Q2 ENERGY & FUELS Applied Thermal Engineering Pub Date : 2024-11-07 DOI:10.1016/j.applthermaleng.2024.124758

Lei Zhang , Wei He , Jian Zhu , Xianghua Liu , Zhongting Hu , Chengguo Yang , Qingda Meng , Shu Wang , Mingyong Li , Xing Zhang , Chenyu Zhang

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Abstract

This paper presents a study on an innovative solar-air dual heat source heat pump coupled with a water-cooled photovoltaic/thermal system. The research investigated the real-time operation of solar electrical and thermal efficiency, as well as the coefficient of performance Field experimental platform construction and experimental testing were conducted. The experimental results show that when running the system in composite mode, the average electrical efficiency in the two phases was 16.79% and 18.33%, while the average collector efficiency reached 42.72% and 98.94%, respectively. Under typical autumn working conditions, the heat pump’s coefficient of performance with the fans off and on was 4.37 and 4.73 respectively on sunny days, and under cloudy day conditions, it reached 3.76 and 4.20 respectively. With the fans on, the average collector efficiency on a cloudy day increased by 3.34% compared with that without the fans, and the total average collector efficiency reached 310.5%. Compared with conventional single water-cooled photovoltaic/thermal systems or solar-assisted heat pump systems, the combination of these two systems, with the addition of both fins and fans which increased the heat transfer performance of the system and improved the stability and economy of the system’s operation, providing data to support the feasibility of a water-cooled photovoltaic/thermal coupled dual-source heat pump system.

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双源热泵与水冷光伏/供热系统耦合的实验研究

本文介绍了一项关于太阳能-空气双热源热泵与水冷光伏/热系统耦合的创新研究。研究调查了太阳能电、热效率以及性能系数的实时运行情况现场实验平台搭建并进行了实验测试。实验结果表明，系统在复合模式下运行时，两相平均电效率分别为 16.79% 和 18.33%，平均集热效率分别达到 42.72% 和 98.94%。在典型的秋季工况下，热泵的性能系数在晴天关闭和开启风扇时分别为 4.37 和 4.73，在阴天条件下分别为 3.76 和 4.20。开启风扇后，阴天的平均集热器效率比未开启风扇时提高了 3.34%，总平均集热器效率达到 310.5%。与传统的单一水冷式光伏/热泵系统或太阳能辅助热泵系统相比，这两种系统的组合增加了翅片和风机，提高了系统的传热性能，改善了系统运行的稳定性和经济性，为水冷式光伏/热泵耦合双源热泵系统的可行性提供了数据支持。

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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.