长江上游江水源热泵系统取水设计温度取值研究
Design value of intaking water temperature of water-source heat pump systems from upper reaches of Yangtze River
摘要：
分析了水源热泵机组变工况运行特性，以重庆市和成都市为例计算了采用月平均水温进行选型的热泵机组在全年水温变化情况下所能提供的制冷、制热量。结合不同规模办公建筑、酒店建筑、商场建筑3种典型公共建筑全年逐时空调冷、热负荷的分布特点，分析了热泵机组在最不利水温下的制冷、制热量与建筑负荷侧需求的关系。在分析其全年制冷期和制热期的不保证时间和保证率的基础上确定了合理的取水温度设计值。
Abstract：
Analyses the operation characteristics of water-source heat pump units in variable conditions. Taking Chongqing and Chengdu as examples, calculates the capacity of actual cooling/heating capacities provided by the heat pump units selected using the monthly mean water temperature in the case of temperature changing throughout the year. Considering the characteristics of hourly air conditioning cooling/heating load for office buildings, hotel buildings and shopping malls, analyses the relationship between the building demand and cooling/heating capacity under the most adverse temperature. By analysing the non-guaranteed hours and guarantee rates of water-source heat pump in annual cooling and heating periods, gives the reasonable design value of intaking water temperature.
Keywords:surface water temperature, water-source heat pump unit, design value of intaking water temperature