Numerical investigation of the effect factors on the performance of a novel PV integrated collector storage solar water heater. (August 2022)

• Record Type: Journal Article
• Authors: Xie, Yujie; Simbamba, Mzee Mohamed; Zhou, Jinzhi; Jiang, Fujian; Cao, Xiaoling; Sun, Liangliang; Yuan, Yanping
• Is Part Of: Renewable energy. Volume 195(2022)
• Page Start: 1354
• Page End: 1367
• Publication Date: 2022-08
• Subjects: Integrated collector storage water heater (ICSSWH) -- Photovoltaic/thermal module -- Effect factor -- Electrical efficiency -- Thermal efficiency; Renewable energy sources -- Periodicals; Power resources -- Periodicals; Énergies renouvelables -- Périodiques; Ressources énergétiques -- Périodiques; 333.794
• DOI: 10.1016/j.renene.2022.06.136
• Languages: English
• ISSNs: 0960-1481

Abstract

Abstract: Due to the lower cost and compact structure, Photovoltaic Integrated Collector Storage Water heater combined (PV– ICSSWH) is an alternative form of PV/T system that differs from traditional flat-plate or vacuum tube PV/T system. An analysis was carried out to investigate the effect of operating parameters and structural factors on system performance. A numerical model was developed to predict the performance of the systems. To validate the numerical model, a prototype system was built and tested. The influence of solar radiation, ambient temperature, the thickness of systems, and the aspect ratio of systems was analyzed and the results indicate that: (a) The aspect ratio has a negligible effect on the efficiency. However, it has a significant influence on temperature stratification. (b) As the thickness of the system drops from 100 mm to 60 mm, its total efficiency descents from 55.1% to 52.7% and the relationship is given. (c) The total efficiency only decreases from 54.7% to 53.5%, when the solar radiation rises from 400 W / m 2 to 800 W / m 2 . (d) As the ambient temperature increases from 283 K to 303 K, the total efficiency of the system ascends from 45.6% to 61.4%. (e) The total efficiency is about 48.0% in Lanzhou, China which is predicted. Highlights: A PVT hot water system with a more compact structure and lower cost is presented. The ambient temperature has significant effect on the system's performance. The aspect ratio has little effect on the thermal and electrical efficiency. The total efficiency of the PVT system is predicted to be 48.0% in Lanzhou China.