Performance study on photovoltaic thermal heat pump system in typical climate zones

• Published in: Applied thermal engineering 2024-04, Vol.243, p.122530, Article 122530
• Main Authors: Mi, Peiyuan, Zhang, Jili, Han, Youhua, Li, Wentao
• Format: Article
• Language: English
• Subjects: Operation performance prediction; Operation study; Performance curve; Photovoltaic thermal heat pump; Typical climate zone
• ISSN: 1359-4311
• DOI: 10.1016/j.applthermaleng.2024.122530

•The integrated energy system of photovoltaic thermal heat pump was constructed.•The operation performance of the system under typical conditions were studied.•The operation performance prediction of the system in 35 cities was conducted.•The performance curve of the system heating and cooling was determined. In recent years, photovoltaic thermal heat pump has become a highly concerned near-zero carbon energy technology due to the characteristic of comprehensive supply of heat-supply in winter, cooling in summer, photovoltaic power generation and domestic hot water all the year around. To guide the design and application of the photovoltaic thermal heat pump in different cities, following studies were carried out in this paper: Firstly, the photovoltaic thermal heat pump integrated energy system was established. Subsequently, the system operation under typical operating conditions in a year was conducted. The results showed that the coefficient of heating performance of the system in domestic hot water production condition in winter, transition season and summer was 2.76, 3.55 and 4.10 respectively. What’s more, the coefficient of heating performance under the heat-supply condition in winter was 2.08 and the average coefficient of cooling performance was 2.32 in summer. Afterwards, the prediction model of system operation performance was established and the annual operation performance prediction of the system in 35 cities of typical climate zones was carried out. Furthermore, the performance curve of the system for domestic hot water production, for heat-supply and for cooling was determined respectively.