直接式污水源热泵系统节能与环保性能研究

Characteristics on Energy Efficiency and Environmental Protection of Direct Sewages Source Heat Pump System

利用城市污水作为水源热泵的热源或热汇实现建筑物供热空调时有直接式与间接式两种形式。借鉴间接式系统的技术成果,对直接式系统的在线除垢技术等关键技术进行了介绍与探讨。以传统锅炉房供热和风冷机组为比较对象,对直接式系统的能源利用效率与环保效益进行评价分析。结果表明:直接系统的一次能源利用率比间接系统的大0.1～0.2左右;全年总节煤量比间接系统大约多7%;直接系统污染物总削减量约比间接系统高8%左右。

There are two forms of the direct and the indirect urban sewage source heat pump system when using the urban sewage as heat source or sink on heating or air conditioning in the buildings. On the basis of the indirect system technology, the key technologies on online scale removal method in the direct system are introduced and discussed. Taking traditional boiler room heating and the forced-air cooling unit as the comparative objects, the appraisal analysis of the direct system is carried on energy efficiency and environmental protection. The results show that the primary energy ratio of direct system is bigger about 0.1-0.2, annual coal conservation is approximately bigger 7%, and amount of pollutants to be reduced is approximately higher about 8% than those of indirect system.