摘要
通过计算水环热泵机组的制冷能效比和制热性能系数,得出了不同循环水温下水环热泵空调系统的一次能耗。结果表明:在冷热负荷比RCH<1的情况下,应尽量提高循环水温,改善热泵工作性能以降低一次能耗;过渡季节RCH>1且系统循环水温为20℃左右时,系统一次能耗量不受建筑冷热负荷比的影响,为一定值;当RCH接近于1时,水环热泵系统能够在水环路内实现较好的热平衡,系统一次能耗量受循环水温的影响较小。
Through calculating the EER and COP of Water-Loop Heat Pumps （WLHP）, the primal energy consumption of WLHP system was calculated when all the units are supplied with circulating water of different temperatures. The results show that it is essential to raise the supplying water temperature to improve the COP of WLHP and reduce the primal energy consumption when the ratio of cooling and heating load （RCH） is less than 1. However, When the RCH is greater than 1 in the transition season, the primal energy consumption of the system is constant under 20~C supplying water. The WLHP system can get heat balance in the water loop, and the primal energy consumption is nearly independent with the supplying water temperature under the condition that the RCH is close to 1.
出处
《建筑热能通风空调》
2009年第4期41-44,共4页
Building Energy & Environment
基金
"十一五"国家科技支撑计划重点项目(No:2008BAJ12B02)
关键词
水环热泵
循环水温
冷热负荷比
water loop heat pump, circulating water temperature, ratio of cooling and heating load
