歧管式微通道热沉在聚光电池冷却中的应用研究
Research on a Manifold Micro-channel Heat Sink Applied in High Concentrated Solar Cells
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摘要: 该文对歧管式微通道冷却技术在聚光电池冷却方面的应用进行了理论和实验研究。歧管式微通道冷却技术有助于在较小的空间内实现高热流密度冷却,较为适合高聚光比的密集阵列聚光电池系统。文中对歧管式微通道热沉热阻的计算方法进行改进,建立该种结构完全基于半经验公式的一维传热模型,并分析影响总热阻的主要因素。同时,对电池–热沉系统进行实验。实验结果表明,在此范围内实验与计算结果具有良好的一致性,电池–热沉系统的整体热阻低于1×10 4m2℃/W。结合聚光电池的性能模型,可获得电池的最大输出功率、效率、温度等性能参数随聚光比的变化情况。Abstract: This paper proposed a theoretical and experimental research on manifold micro-channel cooling scheme applied in high concentrated photovoltaic systems. The manifold micro-channel technique has several advantages in cooling solar cells operating under high concentrations.One-dimensional heat transfer model of solar cell-heat sink was established. The thermal and electrical performance of solar cell and heat sink was tested in broad operating range.The experimental results show that there are good agreements between the measured and predicted system performance.Thermal resistance of solar cell-heat sink is lower than 1×10 4m2 ℃/W. Combined with the performance model of solar cell,the maximum power, efficiency and temperature of solar cell depending on concentration ratio were obtained.
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