摘要
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。
The specific characteristics of ground experimental method was employed to study the continuous and intermittent operation source heat pump in cooling mode in Songjiang District, Shanghai. The experimental results showed that average heat transfer of three wells of 90 m depth was 15.68 kW and average thermal conductivity of the drill Kb was 3.09 during the experimental running time of 72 hours. When compared with the continuous operation mode, average heat transfer and average thermal conductivity of the drill in intermittent operation mode increased 2.3% and 12.3% , respectively. At the same time, according to the comparison with the continuous operation mode, cooling coefficient of performance of ground source heat pump raised 4.1%. The results show that the intermittent operation mode of ground source heat pump can effectively change the increase rate of soil temperature, maximize the heat transfer capability of underground pipes and ensure the efficient operation of ground source heat pump for a long time.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2014年第12期2508-2513,共6页
Acta Energiae Solaris Sinica
基金
校发展基金(2011XY13)
校"十二五"内涵建设项目(nhkv-2012-05)
关键词
地源热泵
地埋管换热器
运行特性
换热量
ground source heat pump
ground heat exchanger
operation characteristic
heat transfer volume
