A refrigerant vaporises , absorbing heat from the air to be cooled .
制冷剂变为蒸汽，吸收空气中的热量。
In conventional vapour-compression systems used by aircon units , the refrigerant is compressed and condensed and then expanded and evaporated to cool the room .
空调设备使用的传统的蒸发压缩循环系统中，冷却剂被压缩冷凝后膨胀气化来给房间制冷。
The compounds are in a class of gases related to a refrigerant that 's about to be banned in europe .
这些化合物跟一种制冷剂同属一类，而该制冷剂在欧洲即将被列为禁止使用的气体。
Then a salty solution , commonly containing lithium bromide , absorbs the refrigerant vapours .
