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建立了闭式湖水源热泵系统的数学模型,根据逐时负荷与逐时气象参数对位于长沙的某闭式湖水源热泵系统的动态特性进行模拟,分析了封闭水体的深度和面积对制冷及制热工况下机组进液温度的影响。分析结果表明:在其他条件不变的情况下,增加水体的深度对系统的供冷性能有利,对系统的供热性能反而不利;增加水体的面积对提高系统供冷性能的作用较小,对提高系统供热性能的作用较大。在一些与长沙气候类似的地区应用闭式湖水源热泵系统时,只要换热盘管长度适当,换热流体可以不采用防冻液。
Based on hourly load and hourly meteorological parameters, the dynamic characteristics of a closed-type lake water source heat pump system in Changsha were simulated. The effects of the depth and area of the closed water system on the refrigeration and refrigeration system Influence of unit inlet temperature under hot condition. The analysis results show that under other conditions, increasing the water depth is beneficial to the cooling performance of the system and adversely affecting the heating performance of the system. Increasing the water area has less effect on improving the cooling performance of the system. Improve the system’s heating performance of larger role. In some areas close to the climate in Changsha, when using the closed lake water source heat pump system, the heat exchange fluid may not use the antifreeze solution as long as the length of the heat exchange coil is appropriate.