【摘要】：通過實驗研究,得到不同孔密度的泡沫金屬內(nèi)濕空氣的換熱和壓降特性,并對泡沫金屬換熱器綜合性能進行了分析。測試樣件為泡沫銅,孔密度為5~40 PPI(pores per inch),孔隙率為95%。研究結(jié)果表明,由于凝結(jié)水的存在,泡沫金屬內(nèi)的濕空氣傳熱系數(shù)隨著孔密度的增大先增大后減小,孔密度為15 PPI時達到最大值;壓降隨著孔密度的增大而增大,且大于20 PPI時壓降增大更明顯。綜合考慮傳熱系數(shù)與壓降因素,泡沫金屬孔密度為15 PPI時綜合性能最佳。
[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，

本文編號：2476192