重庆市湖（库）水源热泵系统取水技术研究

In order to develop intake technology of lakes and reservoirs Water Source Heat Pump (WSHP) system，stemporal and spatial distribution characteristics of water temperature and quality and water features were carried out in Caiyun Lake in Chongqing. The results showed that: the average water temperature of Caiyun Lake in Chongqing was 26~30℃ in summer , 11~15℃ in winter, indicating that Caiyun Lake was a suitable hot and cold sources of WSHP, which have obvious vertical stratification in summer, but not obvious in winter. The quality of the lake meets the basic requirements of water source heat pump structure. pH, turbidity and chlorophyll a have obvious vertical stratification characteristic while hardness and salinity don't. According to temporal and spatial distribution characteristics of water temperature and quality,water intake should be located in the middle or lower of the lake. Intake ways of infiltration diversion, pump, floating ship and siphon were suitable. Research provided the basic data and scientific basis for design of lakes and reservoirs water, also promoted technical support for the efficient application and spread of lakes and reservoirs water source heat pump system.