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Photovoltaic power generation makes full use of the advantages of solar energy, which is green, clean, widely distributed, and abundantly available. However, the efficiency of photovoltaic (PV) modules often decreases as the operating temperature increases, severely affecting system performance. To address this issue, this paper experimentally investigates the cooling effect of phase change materials (PCM) with Y-shaped fins on PV cells. The study focuses on analyzing the effect of structural parameters such as the branching angle, position length, and length ratio of the Y-shaped fins on the system’s thermoelectric performance. The results show that, comparing with the system without fins, the system with Y-shaped fins has an average increase of 0.37% in photoelectric conversion efficiency, and the average melting rate of paraffin increased by 21.52%. The position length has the greatest impact on the melting rate. When the branching angle is 60°, the length ratio is 2, and the position length is 0, the Y-shaped fin can achieve the best temperature uniformity inside the cavity. By coupling Y-shaped fins with PCMs for PV cell cooling, this research aims to address practical application challenges such as uneven melting, internal temperature stratification, excessive local temperatures, and hotspots caused by the poor thermal conductivity of PCMs.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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