| 摘要 |
A unique multi-stage refrigeration system for multiple product-display cases in which each display case has a low-stage booster compressor disposed therein. Each booster compressor compresses refrigerant received from the evaporator in its display case and feeds same to a bank of high-stage compressors disposed in a remotely located equipment room. A mechanical sub-cooler is provided for controlling liquid refrigerant temperature, and an improved lubrication system is provided for balancing the distribution of lubricant throughout the system. Several modifications of the system are also shown. |
