呼制奉村在 Condenser Expansion Device Basic Refrigeration System 2、芾冷工程基本图表 condenser device(D gph和TS图 2.1制冷剂点随压力变化 2.2不同制冷剂的标准沸点不同 Wate 3000 m above sea level · Water vapour pressure normal boiling point 100“c at 1013 mbar pressure at sea level Sea level y.3 Condenser C D refrigerant vapor liquid refrigerant outdoor air 冷凝器: 是输出热量的设备，将制冷剂在 蒸发器中吸收的热量和压缩机消耗功所 转化的热量排放给冷却介质。 Expansion Device A liquid D refrigerant mixture of liquid and vapor refrigerant 节流阀: 对制冷剂起节流降压作用， 并调节进入蒸发器的制冷剂流量。 Basic Refrigeration System compressor condenser evaporator Direct expansion device (DX) discharge line suction line liquid line A B C D 2、制冷工程基本图表 ----lgp-h和T-S 图 2.1制冷剂沸点随压力变化 ’ Water vapour pressure – different boiling points ’ +89 °C ’ at 675 mbar – 3000 m above sea level ’ Water vapour pressure – normal boiling point ’ +100 °C ’ at 1013 mbar – pressure at sea level 3000 m 89°C 100°C Sea level 2.2不同制冷剂的标准沸点不同 0 5 10 15 20 25 Temperature in °C Vapour pressure in bar R12 R134a R600a R290 R404A R407C R410A