论文部分内容阅读
采用实验的方法分别研究上海市松江区地源热泵机组制冷工况连续运行特性和间歇运行特性。实验结果表明,在72 h实验运行时间内,地源热泵机组制冷工况间歇运行模式,3口90 m地埋管井换热量平均值为15.68 k W,钻孔导热系数Kb平均值为3.09,与连续运行模式相比分别提高2.4%、12.3%。同时,热泵机组制冷性能系数与连续运行模式相比提高4.1%。地源热泵间歇运行模式可有效改变土壤温升率,最大限度地发挥地下埋管的换热能力,保证地源热泵机组长时间高效运行。
Experimental methods were used to study the continuous operation characteristics and intermittent operation characteristics of the ground-source heat pump units in Songjiang District, Shanghai respectively. The experimental results show that the average heat transfer value of ground-source heat pump units in intermittent mode of operation, 15.68 k W for 3 90 m buried boreholes during the 72 h experimental run time is 3.09, Compared with the continuous operation mode, it increased by 2.4% and 12.3% respectively. At the same time, the coefficient of performance of the heat pump unit increased by 4.1% compared with the continuous operation mode. The intermittent operation mode of ground source heat pump can effectively change the rate of soil temperature rise, maximize the heat exchange capacity of buried underground pipes, and ensure the efficient operation of ground source heat pump units for a long time.