湿空气在泡沫金属内析湿过程的换热与压降特性影响因素分析

doi:10.11949/j.issn.0438-1157.20141657

化工学报 ›› 2015, Vol. 66 ›› Issue (5): 1649-1655.DOI: 10.11949/j.issn.0438-1157.20141657

湿空气在泡沫金属内析湿过程的换热与压降特性影响因素分析

翁晓敏, 胡海涛, 庄大伟, 丁国良, 许旭东, 杨怀毅

上海交通大学制冷与低温工程研究所, 上海 200240

收稿日期:2014-11-05 修回日期:2015-02-03 出版日期:2015-05-05 发布日期:2015-05-05
通讯作者: 胡海涛
基金资助:
上海市自然科学基金项目(15ZR1422000)。

Analysis of influence factors for heat transfer and pressure drop characteristics of moist air in metal foams during dehumidifying process

WENG Xiaomin, HU Haitao, ZHUANG Dawei, DING Guoliang, XU Xudong, YANG Huaiyi

Research Institute of Refrigeration and Cryogenics, Shanghai Jiao Tong University, Shanghai 200240, China

Received:2014-11-05 Revised:2015-02-03 Online:2015-05-05 Published:2015-05-05
Supported by:
supported by the Natural Science Foundation of Shanghai (15ZR1422000).

摘要/Abstract

摘要： 实验研究了湿空气在泡沫金属内流动析湿过程的换热和压降特性,分析了不同因素的影响规律。研究结果表明:随着入口空气相对湿度的增大,凝结水增多,使泡沫金属的换热量和压降均增大;当入口相对湿度从50%增大到90%时,换热量和压降最大增加了67%和62%;随着入口空气温度的升高,泡沫金属换热量和压降增大;随着冷却水温度的升高,泡沫金属的换热量和压降均下降;随着孔密度的增大,压降增大,但由于受到凝结水影响,总换热量会先减小后略有增大;泡沫金属的迎风高度越大,总换热量和压降越大。

关键词: 泡沫金属, 湿空气, 流动, 析湿, 传热, 压降, 实验验证

Abstract: The heat transfer and pressure drop characteristics of moist air in metal foam during the flow and dehumidification process were investigated experimentally, and the influence of different factors was analyzed. Heat transfer rate and pressure drop increased with increasing relative humidity as a result of increasing condensate water. When relative humidity increased from 50% to 90%, heat transfer and pressure drop respectively increased by 67% and 62%. With the increase of inlet air temperature, heat transfer rate and pressure drop increased. Heat transfer rate and pressure drop decreased with increasing cooling water temperature, pressure drop increased with increasing pore density, while heat transfer at first decreased slightly and then increased because of the influence of condensate water. Heat transfer rate and pressure drop increased with the increase of windward height of copper foam.

Key words: metal foam, moist air, flow, dehumidification, heat transfer, pressure drop, experimental validation

中图分类号:

TK124

翁晓敏, 胡海涛, 庄大伟, 丁国良, 许旭东, 杨怀毅. 湿空气在泡沫金属内析湿过程的换热与压降特性影响因素分析[J]. 化工学报, 2015, 66(5): 1649-1655.

WENG Xiaomin, HU Haitao, ZHUANG Dawei, DING Guoliang, XU Xudong, YANG Huaiyi. Analysis of influence factors for heat transfer and pressure drop characteristics of moist air in metal foams during dehumidifying process[J]. CIESC Journal, 2015, 66(5): 1649-1655.

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湿空气在泡沫金属内析湿过程的换热与压降特性影响因素分析

Analysis of influence factors for heat transfer and pressure drop characteristics of moist air in metal foams during dehumidifying process

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