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Supervised by Ministry of Industry and Information Technology of The People's Republic of China Sponsored by Harbin Institute of Technology Editor-in-chief Yu Zhou ISSNISSN 1005-9113 CNCN 23-1378/T

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Related citation:WU Xue-hui,WEI Qiao-lan,SUN De-xing.Experimental study on thermal resistance of fouling in heat exchangers of sewage source heat pumps[J].Journal of Harbin Institute Of Technology(New Series),2010,17(2):204-208.DOI:10.11916/j.issn.1005-9113.2010.02.011.
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Experimental study on thermal resistance of fouling in heat exchangers of sewage source heat pumps
Author NameAffiliation
WU Xue-hui School of Municipal and Environmental Engineering,Harbin Institute of Technology,Harbin 150090,China 
WEI Qiao-lan School of Municipal and Environmental Engineering,Harbin Institute of Technology,Harbin 150090,China 
SUN De-xing School of Municipal and Environmental Engineering,Harbin Institute of Technology,Harbin 150090,China 
Abstract:
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.
Key words:  swage heat exchangers  fouling  model  experiments
DOI：10.11916/j.issn.1005-9113.2010.02.011
Clc Number:TU831
Fund:

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