自除污型干式污水源热泵系统的实验研究  

EXPERIMENTAL SYSTEM BUILT AND RESEARCH OF A DRY-TYPE WASTEWATER SOURCE HEAT PUMP

作　　者：沈朝[1] 姜益强[1] 姚杨[1] 

机构地区：[1]哈尔滨工业大学市政环境工程学院,哈尔滨150090

出　　处：《太阳能学报》2013年第1期154-159,共6页Acta Energiae Solaris Sinica

基　　金："十二五"国家科技支撑计划重大项目(2012BAJ06B02)

摘　　要：提出一种具有快速除污功能的干式壳管式污水源热泵机组,并对其在桑拿洗浴中心的运行特性进行现场测试。实时监测生产热水过程中机组的运行参数,并验证污水蒸发器的除污特性。研究结果显示:热水加热时间为23min/次,供应热水量约120L/次,温度为51℃,可充分满足用水温度需要;机组COP最高达3.67,最低为2.51,平均值为2.91;30d内污水蒸发器换热量由8300W降低到5600W,约为干净状态换热量的67.5%,除污后污水换热量提升到8100W,基本恢复初始换热量,除污型污水换热器除污和换热效率较高;除污前后,蒸发温度由3.9℃提高到6.1℃,表明该除污功能可大大改善换热系数。A dry-type wastewater source heat pump with function of de-fouling was presented, and then an experi- ment using this test rig was carried out in a sauna center. The unit operation parameters were real-time monitored. Also, effectiveness of de-fouling function of the wastewater evaporator was verified through a field test. Results showed that time for water heating is 23 minutes/once and supplying volume of hot water is 120L/once and temper- ature of supplying hot water is 51 ℃ which is high enough for hot water users ; The maximum COP is 3.67, mini- mum is 2.51 and mean value in the heating process is 2.91. Results also implied that heat transfer rate of wastewater evaporator dropt from 8300W to 5600W during 30-day running which is 67.5% of the initial one. It was enhanced to 8100W by the function of de-fouling which was equal to the initial heat transfer rate approximately; Af- ter de-fouling, evaporation temperature increased from 3.9℃ to 6.1 ℃, which indicates the function of de-fouling can improve the heat transfer coefficient effectively.

关 键 词：干式污水源热泵 除污 洗浴废水 废热回收 COP 

分 类 号：TU831.6[建筑科学—供热、供燃气、通风及空调工程]