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首页> 外文期刊>Renewable energy >Numerical and experimental analysis of the tilt angle's effects on the characteristics of the melting process of PCM-based as PV cell's backside heat sink
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Numerical and experimental analysis of the tilt angle's effects on the characteristics of the melting process of PCM-based as PV cell's backside heat sink

机译：倾斜角度对PV电池背面散热器的熔化过程特性的数值和实验分析

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摘要

Changes in the tilt angle technically affect the amount of solar radiation reaching the surface of panels. Specific to PV/PCM system, where PCM is employed as passive cooling methods for the PV cells, these changes could affect the melting performance of the PCM and subsequently the overall performance of the PV cells. This novel study presents a numerical and experimental analysis to access the effect of tilt angle on the characteristics of the melting process of PCM-based as heat sink inside the PV cells backside rectangular container and its potential used for thermal management of the PV cells. While numerous literature on the numerical modeling of this system focused their attention on the vertical angle, four different tilt angles (0 degrees, 30 degrees, 60 degrees, and 90 degrees) are considered in this study. Excellent agreement was seen between the results obtained from experiments and numerical simulations. The results show that as the tilt-angle of PV/PCM system increases from 0 degrees to 90 degrees, the melting process time of PCM decreases which leads to decrease in overall PV cell temperature from -0.4% to -12%. In conclusion, PCM shows minimal cooling performance at a lower tilt angle due to the role of natural convection heat transfer inside PCM container which acts as a passive cooling mechanism. (C) 2021 Elsevier Ltd. All rights reserved.
机译：倾斜角的变化技术上影响到达面板表面的太阳辐射量。特定于PV / PCM系统，其中PCM用作PV电池的被动冷却方法，这些变化可能影响PCM的熔化性能，随后是PV电池的整体性能。该新型研究提出了一种数值和实验分析，以进入倾斜角度对PVM基于PCM基于矩形容器内部散热器的熔化过程的特性的影响及其用于PV电池热管理的电位。虽然该系统的数值模拟的许多文献聚焦了它们对垂直角度的关注，但在该研究中考虑了四种不同的倾斜角度（0度，30度，60度和90度）。在实验和数值模拟中获得的结果可以看到优秀的一致性。结果表明，随着PV / PCM系统的倾斜角度从0度增加到90度，PCM的熔化过程时间降低，这导致总光伏电池温度降低-0.4％至-12％。总之，由于自然对流传热内部的PCM容器内部的作用，PCM以较低的倾斜角度表示最小的冷却性能，其用作被动冷却机构。 （c）2021 elestvier有限公司保留所有权利。

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