论文部分内容阅读
地热热泵的应用可以提高对地热能的利用率、减少地表热污染 ,但它必须配以适宜的循环工质才能很好地发挥作用。该文针对以 40℃～ 45℃的地热排水为低温热源 ,同时冷凝温度在 80℃～ 10 0℃之间的地热热泵系统 ,提出了一种新的混合循环工质R2 90 /R60 0a/R12 3 (5 0 % / 10 % / 40 % ) ,并做了相应的实验研究 ,最终发现充灌了此工质的地热热泵系统COP可以达到 3 .5以上 ,冷凝温度高于 80℃ ,冷凝压力低于 1.8MPa,同时可将 40℃～ 46℃的地热水冷却到 3 1℃～3 6℃。
The application of geothermal heat pump can improve the utilization of geothermal energy and reduce the surface thermal pollution, but it must be accompanied by the appropriate working fluid to be able to play a good role. Aiming at the geothermal heat pump system with geothermal drainage of 40 ℃ ~ 45 ℃ as low temperature heat source and condensation temperature of 80 ℃ ~ 100 ℃, a new mixed cycle refrigerant R290 / R60 0a / R12 3 (50% / 10% / 40%), and made the corresponding experimental study, and finally found that the refrigerant filled with this working fluid heat pump system COP can reach more than 3.5, the condensing temperature is higher than 80 ℃, the condensing pressure Below 1.8MPa, at the same time can be 40 ℃ ~ 46 ℃ geothermal water cooled to 31 ~ 36 ℃.