Analysis of influence of pore density on heat transfer and pressure drop characteristics of wet air in metal foams

WENG Xiaomin; HU Haitao; LAI Zhancheng; ZHUANG Dawei; DING Guoliang

doi:10.11949/j.issn.0438-1157.20151712

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Analysis of influence of pore density on heat transfer and pressure drop characteristics of wet air in metal foams

更新时间：2025-11-26

- Analysis of influence of pore density on heat transfer and pressure drop characteristics of wet air in metal foams
- CIESC Journal Issue 6, Pages: 2218-2223(2016)
- 作者机构：
  
  上海交通大学制冷与低温工程研究所,上海,200240
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20151712
  CLC： K124
- Online First：05 June 2016，
  
  Published：05 June 2016
- 稿件说明：
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WENG Xiaomin, HU Haitao, LAI Zhancheng, et al. Analysis of influence of pore density on heat transfer and pressure drop characteristics of wet air in metal foams[J]. CIESC Journal, 2016, (6): 2218-2223.
DOI：

WENG Xiaomin, HU Haitao, LAI Zhancheng, et al. Analysis of influence of pore density on heat transfer and pressure drop characteristics of wet air in metal foams[J]. CIESC Journal, 2016, (6): 2218-2223. DOI： 10.11949/j.issn.0438-1157.20151712.

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5~40PPI(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15PPI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15PPI时综合性能最佳。

Abstract

The heat transfer and pressure drop characteristics of wet air in metal foams with different pore density were experimentally investigated

and the comprehensive performance of metal foam heat exchangers was analyzed. The test sample is copper foam

the PPI value of the tested metal foam covers 5-40 and the porosity is 95%. The results showed that the heat transfer coefficient increased initially and then decreased with the increase of PPI values due to the presence of the condense water. It reached up to the maximum value as the pore density was 15 PPI. The pressure drop increased with increasing pore density and the increment was more obvious as PPI value was higher than 20. The comprehensive performance was the best for the metal foam with 15 PPI by considering both the heat transfer coefficient and pressure drop.

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Related Author

Yaxin ZHAO

Zhancheng LAI

Haitao HU

WENG Xiaomin

HU Haitao

ZHUANG Dawei

DING Guoliang

XU Xudong

Related Institution

Institute of Refrigeration and Cryogenics Engineering, Shanghai Jiao Tong University

Research Institute of Refrigeration and Cryogenics, Shanghai Jiao Tong University

Institute of Refrigeration and Cryogenics, Shanghai Jiao Tong University

Key Laboratory of HVAC, Beijing University of Civil Engineering and Architecture

School of Environment and Energy Engineering, Beijing University of Civil Engineering and Architecture

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