论文部分内容阅读
利用Fluent建立土壤源热泵空调系统仿真模型,通过模拟结果与热响应测试所得结果的比较验证了模型的准确性。该模型耦合了土壤源热泵空调系统三大组成部分:负荷末端、热泵机组以及地埋管换热器。在此前提下,研究土壤源热泵空调系统中不同地下水流速工况下热泵机组COP的变化情况。结果表明,在常见的地下水流速0m/a至300m/a范围内,地下水流速越大,热泵机组COP越大,其中夏季制冷期间,当地下水流速从0分别增加到60m/a,100m/a,150m/a,200m/a,250m/a,300m/a时,机组COP分别增加11.54%,16.04%,19.91%,23.17%,25.50%,27.14%,从而减小了机组运行能耗。
The simulation model of ground source heat pump air conditioning system was established by using Fluent. The accuracy of the model was verified by comparing the simulation results with those obtained by the thermal response test. The model is coupled with three components of a ground source heat pump air conditioning system: the load end, heat pump units and ground tube heat exchangers. Under this premise, the change of COP of heat pump unit under different groundwater flow velocity conditions in ground source heat pump air conditioning system was studied. The results show that the greater the groundwater flow rate is, the larger the COP of the heat pump unit is during the common groundwater flow rate from 0m / a to 300m / a. During the summer cooling period, the local groundwater flow rate increases from 0 to 60m / a and 100m / a respectively, The COP of the unit increased by 11.54%, 16.04%, 19.91%, 23.17%, 25.50% and 27.14% respectively at 150m / a, 200m / a, 250m / a and 300m / a, thus reducing the unit energy consumption.