利用城市原生污水作为热泵冷热源时,换热管软垢生长特性是要考虑的重要问题。以实际应用的污水换热器为宴验对象,测试了换热器换热性能、软垢随时间与流速的增长特性,分析了软垢热阻及其对传热性能的影响。同时发现,以水力反冲方法实现软垢的清洗具有可行性。
When using the arban original wastewater, a key factor is the characteristic of the soft dirt. Based on the wastewater heatexchanger in actual engineering, the performance of heat-exchanging and the dirt growth as time and velocity increasing were tested, and the dirt resistance and its influence to the heat exchanging characteristic was analyzed. So it' s possible to wash the dirt by hydraulic reactive method.