基于Fluent/Matlab的地下水流速对交叉流模式热泵性能的影响分析

为了分析地下水源热泵系统地下水交叉流对系统性能参数的影响,基于Fluent/Matlab搭建了协同仿真平台,对多年运行的地下水源热泵系统进行了仿真计算。通过分析可知,当地下水流速较高时,年平均抽水温度保持含水层的初始温度不变,机组COP(EER)及系统能效比在运行周期内保持不变;地下水流速越大,热泵系统抽水温度越趋于稳定,地下水冷水锋面越远离抽水井向水流下游偏移,抽水井附近含水层温度场越稳定,机组COP及系统能效比值越高,于维持系统的长期稳定运行越有利。

Influences of the Groundwater Flow Rate in Cross Flow on the Groundwater Heat Pump Based on Fluent/Matlab

To analyze the effect of groundwater source heat pump system for cross -flow of groundwater system performance parameters ,this article is based on Fluent/Matlab to build the collaborative simulation platform , the underground water source heat pump system for years running carried on the simulation calculation .Through the data analysis :The groundwater source heat pump flows under the groundwater cross flow ,the different groundwater flow rate differently affects the heat pump system performance parameters .The larger flow velocity is ,the more stable the pumping system temperature is and the more favorable the long-term stable operation system is .When the groundwater flow rate is in a high velocity state ,the annual average pumping water temperature keeps the aquifer initial temperature constant and the unit COP (EER) and system ener-gy efficiency remains unchanged in the operation cycle .The greater the groundwater flow rate is ,the greater the cold front is far away from the pumping well to the water downstream migration ,the more stable pumping wells near the aquifer temperature field is and the higher the unit COP and system energy efficiency ratio is .