新型通水地板耦合空气源热泵辐射供暖性能实验

Experimental Study on Heating Performance of Air-source Heat Pump Coupled with a New Type Rodiant Floor

为了分析新型通水地板耦合空气源热泵辐射供暖系统应用于北方寒冷地区的实际供暖效果及运行性能,在天津市某住区管理机构用房中进行了76 d现场测试。测试期内,室内工作区域温度平均值变化范围为18.4~21.8℃,地表温度平均值变化范围为22.5~29.1℃;超过90%的LPD 1、LPD 2处于Ⅰ级指标;系统日平均制热量变化范围为1.5~6.9 kW,日平均功率变化范围为0.6~3.2 kW,日平均COP的变化范围为1.43~3.54,日平均耗电量为0.79 kW·h/m 2。当地板表面温度和办公区域温度差值在5℃以内时,散热量仍可达50~100 W/m 2。最冷测试日时,室外温度变化范围为-10.1~2.1℃,室内工作区域温度平均值为21.4℃,室内瞬时温度最小值为16.4℃,LPD 1和LPD 2全部处于Ⅰ、Ⅱ级标准范围,保证了供暖品质;系统瞬时制热量变化范围为6.1~10.9 kW,瞬时功率变化范围为2.9~3.3 kW,瞬时COP变化范围为1.91~3.49。

In order to analyze the actual heating effect and operation performance of a new type of radiant floor heating system coupled with air-source heat pump applied in the northern cold area,a 76-day field test was conducted in an office building for the management of residential area in Tianjin.During the test period,the average temperature of indoor working area was 18.4-21.8℃,and the average indoor surface temperature was 22.5-29.1℃.More than 90%of indoor LPD1and LPD2 were in grade Ⅰ index.The average daily heating capacity and power are 1.5-6.9 kW and 0.6-3.2 kW,respectively;the daily average power consumption is 0.79 kW·h/m2,and the daily average COP is 1.43-3.54.When the temperature difference between the floor surface and the office area is within 5℃,the heat dissipation can still reach 50-100 W/m2.In the coldest test days,the outdoor temperature is -10.1-2.1℃,the average temperature in the working area of three indoor test positions is 21.4℃,the lowest indoor instantaneous temperature is 16.4℃,LPD1and LPD2 are all in the standard range of grade Ⅰ and Ⅱ,which ensures the heating quality.The range of the heating capacity and power of the system is 6.1-10.9 kW and 2.9-3.3 kW,respectively,and the range of COP is 1.91-3.49.