摘要
以南华大学土壤源热泵系统为研究对象,对夏季制冷运行特性进行实验研究。测得了热泵运行前土壤原始温度分布,测试了热泵机组连续和间隙运行时,管壁处土壤温度变化情况,埋管侧进出口水温的变化情况以及埋管换热器的换热情况。研究结果表明:土壤原始温度为19.77℃,与连续运行相比,间隙运行下管壁处土壤温度降低了2.3℃,埋管侧进出口水温分别降低了2℃和2.3℃,单位管长深换热量提高了25%。
With the soil source heat pump system of Nanhua University as an example, investigated the operating characteristics of cooling conditions in summer. Measured the initial soil temperature distribution before heat pump operating, and tested respectively the soil temperature changed, the inlet and Outlet water temperature in the underground exchanger and the heat transfer capacity under continuous and intermittent cooling operation. The results indicated that under the intermittent operation at the soil initial temperature of 19.77 ℃, the soil temperature was increased by 2.3 ℃, inlet and outlet water temperature were increased by 2 ℃ and 2.3 ℃ , and the unit well depth change heat increased by 25%, respectively, when compared with continuous operation.
出处
《湖南工业大学学报》
2012年第5期30-32,45,共4页
Journal of Hunan University of Technology
关键词
土壤源热泵
制冷工况
换热特性
实验研究
soil source heat pump
refrigeration conditions
heat transfer characteristics
experimental study
