Experimental study on thermal resistance of fouling in heat exchangers of sewage source heat pumps |
| |
Authors: | WU Xue-hui WEI Qiao-lan and SUN De-xing |
| |
Affiliation: | ( 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. |
| |
Keywords: | swage heat exchangers fouling model experiments |
本文献已被 CNKI 维普 万方数据 等数据库收录! |
| 点击此处可从《哈尔滨工业大学学报(英文版)》浏览原始摘要信息 |
|
点击此处可从《哈尔滨工业大学学报(英文版)》下载全文 |