两个系统参数对地热热泵循环的影响

INFLUENCE OF TWO SYSTEMATIC PARAMETERS ON THE GEOTHERMAL HEAT PUMP SYSTEM OPERATION

为了解决地热热泵系统输出能量和用户需求能量之间的动态平衡问题,该文对系统的两个主要参数(冷凝器侧水流量和压缩机输入频率)对地热热泵循环特性的影响进行了相应的实验研究。在小型地热热泵系统上进行了变频及变水流量实验研究,频率变化范围为30Hz～55Hz,冷凝器水流量变化范围为0 054kg/s～0 174kg/s;然后,通过对实验数据的分析,发现了系统各参数,如COP值、制热量、压缩机能耗等随频率及水流量的变化规律。该文的结论可以在制定地热热泵系统能量输出的调节策略中起到一定的指导作用。

Affection of two systematic parameters (water flow rate inside the condenser and import frequency of compressor) on the GHPS operation should be known for matching the output capacity of geothermal heat pump system (GHPS) and the actual load.Firstly,experiments on a small type GHPS were done,with the frequencies changing from 30Hz to 55Hz and water flow rate inside the condenser changing from 0.054kg/s to 0.174kg/s.Secondly,based on the analysis of experimental data,the relationships among the import frequency of compressor,water flow rate and other important parameters such as coefficient of performance (COP),heat capacity,cool capacity and power were shown,which will be helpful to adjust GHPS' output capacity.