Abstract An increase in Photovoltaic (PV) module temperature (TPV) affects the photoconversion efficiency (PCE). Annual TPV loss accounts higher than other losses in the PV system for hot climatic conditions. The main objective of this work is to introduce a novel passive Cold-PCM (C-PCM) to reduce the TPV. Commercial PCM’s are more expensive than a eutectic PCM. In this work, Lauryl alcohol and Ethyl alcohol are mixed in a ratio of 75:25 to form a eutectic mixture. The prepared eutectic mixture is having a melting temperature and latent heat of fusion of 21.75 °C and 199 J/g, respectively. Furthermore, C-PCM containers with 3-cm and 5-cm thickness are attached at the back surface of the PV module. It is observed that the 5-cm container exhibits higher heat transfer, which subsequently resulted in TPV reduction at a maximum of 10.3 °C. This decrease in TPV, enhanced the average voltage profile by 2.85%, thereby the average output power is also boosted by 2.8%. Consequently, this eutectic PCM can improve the average performance ratio, electrical efficiency and capacity utilization factor of the PV module by 72.63%, 10.09% and 19.41%, respectively. Thus the experimental results revealed that C-PCM could be a potential replacement to H-PCM for cooling down the TPV.

中文翻译：

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共晶冷相变材料光伏组件降温实验研究

摘要 光伏 (PV) 模块温度 (TPV) 的升高会影响光转换效率 (PCE)。在炎热气候条件下，年度 TPV 损失高于光伏系统中的其他损失。这项工作的主要目标是引入一种新颖的无源冷 PCM (C-PCM) 来降低 TPV。商用 PCM 比共晶 PCM 贵。在这项工作中，月桂醇和乙醇以 75:25 的比例混合形成低共熔混合物。制备的共晶混合物的熔化温度和熔化潜热分别为 21.75°C 和 199 J/g。此外，具有 3 厘米和 5 厘米厚度的 C-PCM 容器连接在 PV 模块的背面。据观察，5 厘米的容器表现出更高的热传递，随后导致 TPV 减少最多 10.3 °C。这种 TPV 的降低，使平均电压分布提高了 2.85%，从而平均输出功率也提高了 2.8%。因此，这种共晶相变材料可以将光伏组件的平均性能比、电效率和容量利用率分别提高72.63%、10.09%和19.41%。因此，实验结果表明 C-PCM 可能是 H-PCM 的潜在替代品，用于冷却 TPV。