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基于重庆地区的气候条件,分别分析了降雨对水体水温分布及水体热承载能力的影响,同时还分析了降雨对开式湖水源热泵系统运行能耗的影响。结果表明,强降雨主要以输入冷量的方式使水体水温整体降低,并实测得到降雨前、后机组的平均运行能效比分别为3.29和4.35,即降雨后的系统效率相对于晴天提高了32.3%;小雨及阵雨主要以扰动的形式使水体上、下部的温度中和,对机组能耗影响不明显,但加快了取水层(水体底层)的温升速度。因此,在对湖水源热泵系统进行效率分析时,要充分考虑当地的气候条件。
Based on the climatic conditions in Chongqing, the effects of rainfall on the distribution of water temperature and the thermal carrying capacity of water body are analyzed respectively. At the same time, the influence of rainfall on the energy consumption of open lake water source heat pump system is also analyzed. The results show that the heavy rainfall mainly reduces the water temperature of the water body with the input cooling capacity, and the measured average operating energy efficiency ratio of the unit before and after the rainfall are respectively 3.29 and 4.35, that is, the system efficiency after rainfall is increased by 32.3% The light rain and the showers mainly caused the temperature in the upper and lower parts of the water body to be neutralized by disturbance, which had no obvious effect on the energy consumption of the unit, but accelerated the rate of temperature rise of the water column (bottom of water body). Therefore, in the lake water source heat pump system for efficiency analysis, we must give full consideration to the local climate conditions.