| 摘要 |
A heat transfer system employing a two-stage compressor and a heat recovery system including a flash vapor receiver which pools warm refrigerant from a system condenser, delivering receiver refrigerant vapor to the compressor at its second stage inlet and delivering receiver liquid refrigerant to a system evaporator. The system also employs evaporation, compression and condensation of an oilless refrigerant, or an azeotrope mixture of oilless refrigerants, to reduce compression and resulting power requirements. The system evaporator or evaporators are flooded with refrigerant, with vaporous refrigerant separated and routed to the compressor and liquid refrigerant separated and returned to the evaporators.
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