摘要
为了实现节能减排,减少供暖期内煤、天然气等一次能源消耗,对低温地表水源热泵系统供暖的可行性进行研究。受冬季地表水源温度的限制,采用闭式水源热泵系统。对该系统分别采用单级、双级耦合运行,计算并分析系统制热效能比(EER),得出冬季水温极端情况下热泵提供45.0℃水时,系统制热效能比均大于2.6,证明了冬季利用低温水源供热的可行性。同时对单级热泵系统和双级耦合热泵系统制热效能比作对比,确定了低温水源热泵系统分别提供45.0℃和50.0℃热水的单、双级切换条件的水温为5.0℃和8.0℃。
To save energy and reduce coal and gas consumption,and reduce emission,the possibility of low-temperature surface water heat pump system was studied.Constrained by the temperature of winter surface water,closed-type water heat pump system was adopted.The system adopts the single stage and double stage coupling operation,after calculated and analyzed system heating efficiency ratio and indicated that the winter water temperature in extreme cases provided 45.0 ℃ water heat pump,heating system efficiency were greater than 2.6,proved the feasibility of using the low temperature water heating in winter.Tosingle stage and double stage coupling heat pump system at the same time heat pump heating efficiency than the contrast(investigate),determines the low temperature water source heat pump system respectively with 45.0 ℃ and 50.0 ℃ hot water of single and double switching condition water temperature of 5.0 ℃ and8.0 ℃.
出处
《华电技术》
CAS
2017年第2期62-64,75,共4页
HUADIAN TECHNOLOGY
关键词
水源热泵
单、双级切换
制热效能比
闭式系统
water heat pump
single-double-stage switch
heating efficiency ratio
closed-type system
