This results in a much more benign forward start as less refrigerant is drawn into the compressor pump and the amount of oil pumped out of the compressor on start up is minimized.
这使得在更少制冷剂吸入到压缩机泵，并使启动时泵出压缩机的油量最小化时得到更良好的正向启动。
2
If the ground-source heat pump are used in open systems, namely the use of direct extraction of groundwater and pumps refrigerant for heat exchange, and at suitable locations recharge or discharge.
如果地源热泵采用的是开路系统，即利用水泵直接抽取地下水与制冷剂进行热交换，并在合适地点回灌或排放。
3
As an increasing need for protecting the environment, a new type of the heat pump water heater with the natural refrigerant CO_2 will appear in water heater market.