摘要
闭式换热盘管内的水流量变化影响水源热泵系统的整体性能。建立了水源热泵系统能耗数学模型和最佳水流量计算方法,通过水源热泵系统性能的理论计算,得到热泵系统整体性能系数与冷却水温度及冷却水设计流量百分数的拟合关系式;理论关系式表明,在定机组进水温度工况下,系统COP值在某一循环水设计流量百分数下取得最优值。在长江重庆段建立了闭式江水源热泵试验台,进行了变流量的冬夏季工况实验,实验结果与理论计算结果趋势一致。该计算方法可以为闭式水源热泵系统性能的进一步研究提供参考。
The water flow of closed-loop heat exchanger coil influences the overall performance of water source heat pump systems（WSHP）.Energy consumption model of water source heat pump systems and calculation method of optimal water flow are both established.Through the theoretical calculations of water source heat pump systems performance,the theoretical relationship between overall coefficient of performance（COP）and percentage of cooling water flow and temperature of the water source heat pump systems is gotten.In the given temperature conditions,the value of the system COP is optimal under a percentage of cooling water flow.A closed-loop water source heat pump test bench is established in Yangtze River.Then,the variable flow conditions experiments are both done in summer and winter,experimental results and theoretical results are consistent.The calculation method can provide a reference for further research of the performance of closed-loop water source heat pump systems.
出处
《重庆大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2013年第3期109-113,134,共6页
Journal of Chongqing University
基金
国家科技部"十一五"科技攻关项目:水源地源热泵高效应用关键技术研究与示范(2006BAJ01A06)
关键词
水源热泵
闭式换热器
水流量最优值
性能系数
water source heat pump system
closed-loop heat exchanger coil
optimal water flow
coefficient of performance
