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Experimental study on the effects of ambient temperature on the efficiency of photovoltaic solar panels in desert areas of Iran
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Sina Shokouhi *   |
| , sinashokuhi2023@gmail.com |
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Abstract: (18 Views) |
| Photovoltaic solar panels in hot and desert climates, especially in Iran, face performance challenges due to high temperatures, a factor that can significantly reduce system efficiency. The aim of this study is to experimentally investigate the effect of ambient temperature on key performance parameters of a monocrystalline photovoltaic panel, including open circuit voltage (Voc), maximum power (Pmax), and short circuit current (Isc), under real climatic conditions in the Bayaz region of southern Iran. Data were collected during the hot season using accurate radiation and temperature sensors. The results showed that with increasing temperature, the open circuit voltage and output power decreased significantly, such that at 69°C, the generated power decreased to less than 52% of the nominal power. In contrast, the short circuit current showed only slight changes. Also, the performance of peripheral components such as inverters, transformers, and cables also decreased or accelerated thermal degradation under the influence of temperature. Accordingly, the findings emphasize the importance of proper thermal design, selection of equipment with high temperature class, and application of effective cooling technologies in solar power plants in tropical regions. |
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| Keywords: Photovoltaic (PV) systems, maximum power (Pmax), short circuit current (Isc), open circuit voltage (Voc). |
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Full-Text [PDF 676 kb]
(6 Downloads)
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Type of Study: Research |
Subject:
Renewable Energy Technologies
Received: 2025/05/28 | Accepted: 2025/07/24 | Published: 2024/11/30
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