压缩机的输气系数λ大大降低，且当压缩比≥20时，λ＝0 。
1. The gas transmission coefficient λ of the compressor is greatly reduced, and λ = 0 when the compression ratio is ≥ 20.
2、对于活塞压缩机，由于余隙容积的存在，当压比达到20时，压缩机几乎不吸气。压缩机的单位制冷量和单位容积制冷量都大为降低
2. For piston compressor, due to the existence of clearance volume, when the pressure ratio reaches 20, the compressor almost does not aspirate. The refrigerating capacity per unit volume and refrigerating capacity per unit volume of compressor are greatly reduced
3、压缩机的功耗增加，排气温度升高。节流损失增大，压缩机制冷量减小。
3. The power consumption of the compressor increases and the exhaust temperature increases. The cooling capacity of compression mechanism decreases with the increase of throttling loss.
4、排气温度高，润滑油变稀，润滑条件减弱，甚至油会出现结碳现象，且必须采用高着火点的润滑油，因为润滑油的粘度随温度升高而降低。
4. When the exhaust temperature is high, the lubricating oil becomes thinner, the lubricating conditions are weakened, and even the oil will have carbon deposition. Moreover, the lubricating oil with high ignition point must be used, because the viscosity of the lubricating oil decreases with the increase of temperature.
5、被高温过热蒸气带出的润滑油增多，增加了分油器保定平面设计培训 保定室内设计培训 保定空调移机 保定太阳能维修 保定厨房排烟 雄安管道通风 的负荷，使冷冻机油汽化、油蒸气大量进入系统，影响换热器的换热效果。
5. The increase of lubricating oil brought out by high-temperature superheated steam increases the load of oil separator, makes the refrigeration oil vaporize and oil vapor enter the system in large quantity, which affects the heat exchange effect of heat exchanger.