热源塔热泵机组的研发与试验研究

Development and test on heat-source tower heat pump unit

根据长江流域气候及建筑负荷特点,设计采用喷气增焓技术的热源塔热泵机组,并在制冷工况、制热工况、制热高温工况及制热低温工况下对其进行性能测试。结果表明:机组全年综合性能系数为4.21;在制冷工况(冷凝温度为54.8℃)时,制冷能效比为2.80;在制热工况(蒸发温度为-3.8℃)时,制热性能系数为3.88;部分负荷时,机组制冷能效比(制热性能系数)随负荷降低而降低,当制冷(制热)负荷低至30%时,机组制冷能效比(制热性能系数)为3.58(1.97)。

Based on the characteristics of the weather and building load in Yangtze River basin, one heat-source tower heat pump unit with enhanced vapor injection is designed. The performance tests are carried out under cooling condition, heating condition, heating condition in high temperature or low temperature. The results show that the annual coefficient of performance of this unit is 4.21. Under the cooling condition(the condensing temperature is 54.8 ℃), the EER is 2.80. Under the heating condition(the evaporating temperature is-3.8 ℃), the COP is 3.88. Under the part load condition, the unit EER(COP) decreases with the load reducing, and the unit EER(COP) is 3.58(1.97) when the cooling(heating) load is as low as 30%.