土壤源水冷多联机系统冬季工况运行能效实测研究

Experimental Study on Operation Energy Efficiency Measurement of Soil Source Watercooled VRF System in Winter Operating Condition

以南京某土壤源水冷多联机系统为研究对象,通过测试其实际运行数据,对水冷多联机机组能效、输配系统能效、空调系统能效进行研究。研究结果表明：冬季制热工况下,水冷多联机机组在部分负荷状态下,其性能随负荷率的增大先增后减,在负荷率为0.4~0.6之间时达到最大值;机组的综合部分负荷性能系数为4.58;输送能效比变化范围为0.067~1.55,空调系统能效比变化范围为2.14~4.7。

A soil source water-cooled VRF system in Nanjing was adopted as the research object. By testing the actual operating data,energy efficiencies of unit,transportation and distribution system and air conditioning system in the water-cooled VRF were all studied. According to research accomplishments,it could be found that the performance of such a water-cooled VRF unit in part load conditions firstly rose and then decreased as the load rate went up in a winter heating mode. When the load rate lay between 0. 4 and 0. 6,it had an optimal performance.Integrated part load value（ IPLV） performance coefficient of the unit was 4. 58 and energy efficiency ratio（ EER）of transportation ranged from 0. 067 to 1. 55. In addition,EER of the air conditioning system varied between 2. 14 and 4. 7.