孔密度对泡沫金属内湿空气的换热与压降特性影响分析
发布时间：2019-05-13 21:07
【摘要】：通过实验研究,得到不同孔密度的泡沫金属内湿空气的换热和压降特性,并对泡沫金属换热器综合性能进行了分析。测试样件为泡沫铜,孔密度为5~40 PPI(pores per inch),孔隙率为95%。研究结果表明,由于凝结水的存在,泡沫金属内的湿空气传热系数随着孔密度的增大先增大后减小,孔密度为15 PPI时达到最大值;压降随着孔密度的增大而增大,且大于20 PPI时压降增大更明显。综合考虑传热系数与压降因素,泡沫金属孔密度为15 PPI时综合性能最佳。
[Abstract]:Through the experimental study, the heat transfer and pressure drop characteristics of wet air in foam metal with different pore density are obtained, and the comprehensive performance of foam metal heat exchanger is analyzed. The test sample is copper foam, and the porosity is 95% when the pore density is 5 鈮，
本文编号：2476192
[Abstract]:Through the experimental study, the heat transfer and pressure drop characteristics of wet air in foam metal with different pore density are obtained, and the comprehensive performance of foam metal heat exchanger is analyzed. The test sample is copper foam, and the porosity is 95% when the pore density is 5 鈮，
本文编号：2476192
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