Experimental study on thermal resistance of fouling in heat exchangers of sewage source heat pumps

被引：0

作者：

吴学慧 ^{[1
]}

魏巧兰 ^{[1
]}

孙德兴 ^{[1
]}

机构：

[1] School of Municipal and Environmental Engineering,Harbin Institute of Technology

来源：

Journal of Harbin Institute of Technology(New series) | 2010年 / 02期

基金：

中国国家自然科学基金;

关键词：

swage heat exchangers; fouling; model; experiments;

D O I：

暂无

中图分类号：

TU831 [空气调节];

学科分类号：

080705 ;

摘要：

To investigate the formation of fouling in sewage heat exchangers,a model of thermal resistance with time is developed based on the experiments in a practical engineering site. And this model is asymptotic exponential function. According to the characteristic of sewage heat exchangers,the effective thermal resistance and effective coefficient of heat transmission during the formation of fouling are defined. A model for pressure loss of fouling of asymptotic distribution is presented based on the model of thermal resistance of fouling. And the maximum absolute margin of error of the fouling thermal resistance is smaller than the typical allowable error range. The maximum relative error of the heat transfer coefficient is 12% . These can meet the requirements of engineering. The results of experiments provide a basis for further study and application of swage heat exchangers.

引用

页码：204 / 208

页数：5

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