电化学腐蚀对翅片管换热器性能的影响
Effect of electrochemical corrosion on performance of tube-fin heat exchanger
查看参考文献15篇
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文摘
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翅片管换热器的铜管与铝翅片之间容易发生电化学反应,在铝翅片表面形成一层三氧化二铝,增大换热器传热热阻,影响换热器乃至整个空调系统的性能.对翅片管换热器分别进行48 h和96 h的盐雾腐蚀实验,然后对腐蚀前后的实验样件测试其传热及压降特性,结果表明,翅片管蒸发器经盐雾腐蚀以后,其风阻变化在5 Pa以内,而换热量最多会降低12.5%,总的传热系数最多会减少16.6%,传热热阻最多会增加20%. |
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其他语种文摘
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Electrochemical corrosion takes place between the copper tube and aluminum fin of tube-fin heat exchanger easily,forming a high thermal resistance layer of Al_2O_3.Therefore,the performance of the heat exchanger and the entire air conditioning system will be affected.In this paper,48 h and 96 h salt spray corrosion tests were made on the tube-fin heat exchanger respectively.And the performance of the heat exchanger before and after salt spray corrosion was tested.It was found that the change of air pressure drop was less than 5 Pa.The capacity and overall heat transfer coefficient of the heat exchanger decreased by 12.5% and 16.6% after corrosion respectively.The thermal resistance of the heat exchanger increased by 20% at most. |
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来源
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化工学报
,2010,61(1):22-26 【核心库】
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关键词
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翅片管换热器
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电化学腐蚀
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传热系数
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热阻
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地址
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1.
上海交通大学制冷与低温工程研究所, 上海, 200240
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国际铜业协会广州代表处, 广东, 广州, 510620
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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0438-1157 |
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学科
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一般工业技术 |
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文献收藏号
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CSCD:3804432
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