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首页> 外文期刊>Energy Conversion & Management >Optimization and parametric analysis of a multi-junction high-concentrator PV cell combined with a straight fins heat sink
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Optimization and parametric analysis of a multi-junction high-concentrator PV cell combined with a straight fins heat sink

机译：多结高浓缩器PV电池与直翅片散热器合并的优化和参数分析

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An efficient cooling system is crucial for solar cells operating under high concentration ratios to maintain the cell temperature below the maximum allowable temperature limit and to ensure higher efficiency. The current study focuses on the passive cooling of a triple-junction solar cell using a straight fins heat sink. A comprehensive 3D heat transfer and electrical model integrating the CPV cell full layers and the straight fins heat sink is developed and numerically simulated. The effects of ambient temperature, wind speed, and concentration ratio have been studied over various lengths of the straight fins heat sink. In harsh weather conditions of 45 degrees C ambient temperature, 1 m/s wind speed, and 500 suns, the straight fins reduced cell temperature by approximately 421.2 degrees C to 432.1 degrees C with reference to the uncooled cell depending on fins length. Accordingly, the cooling system enabled to realize a higher concentration of 1250 suns producing 43.4 W/cm2 while the uncooled cell is limited at 72.5 suns with an electrical output of 2.5 W/cm2. Environmental analysis showed that cooling of CPV system using straight fins could reduce annual carbon dioxide emissions by 903 and 1705 tons/m2 at a solar concentration of 500 and 1000 suns respectively. Additionally, Taguchi analysis is performed to find the most affecting parameter on the cell performance and the optimum fin length. The analysis showed that concentration ratio has the most significant effect on the performance of the system, followed by ambient temperature and then fin length. Conversely, the impact of wind speed can be neglected.
机译：高效的冷却系统对于在高浓度比下操作的太阳能电池至关重要，以将电池温度保持在最大允许的温度下限以下，并确保更高的效率。目前的研究侧重于使用直翅片散热器的三界太阳能电池的被动冷却。开发并在数值模拟中开发了整合CPV电池全层和直翅片散热器的综合3D传热和电气模型。已经在各种长度的直翅片散热器上研究了环境温度，风速和浓度比的影响。在45摄氏度的恶劣天气条件下，4米/升风速和500个太阳，直接翅片将电池温度降低约421.2℃至432.1℃，参考未冷却的电池，取决于翅片长度。因此，冷却系统能够实现更高浓度的1250℃，产生43.4W / cm 2，而未冷却的电池在72.5太阳下限制为2.5W / cm2的电气输出。环境分析表明，使用直翅片的CPV系统的冷却可以分别以500和1000阳光的太阳浓度降低903和1705吨/m2的年度二氧化碳排放。另外，执行TAGUCHI分析以查找电池性能和最佳鳍长的影响最大的参数。分析表明，浓度比对系统性能的影响最大，其次是环境温度，然后是翅片长度。相反，风速的影响可以忽略。

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