Experimental study on thermal resistance of fouling in heat exchangers of sewage source heat pumps
WU Xue-hui, WEI Qiao-lan, 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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Experimental study on thermal resistance of fouling in heat exchangers of sewage source heat pumps
本站小编 哈尔滨工业大学/2019-10-23
相关话题/Experimental study thermal resistance fouling
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