基于Fluent/Matlab的地下水流速对顺流模式热泵性能的影响分析

地下水源热泵系统在地下水顺流模式下,不同的地下水横流速度对热泵性能参数的影响不同:顺流水流速越小,系统发生热贯通时间越晚;流速越大,发生热贯通时间越早。地下水横流流速度越大,热泵机组的COP越大,系统能效比越大。随着地下水横流流速增大,垂直顺着水流方向上温度场变化区域逐渐减小,为了减少井群占地区域,顺流模式下同类井群间距可以适当减少。

The Analysis on the Influence of the Groundwater flow rate in Downstream Flow to the Groundwater Heat Pump Based on Fluent/Matlab

For the groundwater heat pump at the level of groundwater under the downstream flow, different Groundwater flow rate is different from the heat pump system performance parameters, the smaller levels along the water flow rate is, and the later thermal systems through time, the larger flow rates, and the shorter the time of thermal penetration would be. The larger flow rates, and the greater the heat pump COP values, the greater the System efficiency ratio would be. Along with increase of the flow rates, the vertical temperature field changes along the flow direction will be smaller. In order to reduce the group covers wells area, the wells spacing groups of the same type can be appropriately reduced in the downstream mode.