TWO-STAGE CENTRIFUGAL COMPRESSOR WITH EXTENDED RANGE AND CAPACITY CONTROL FEATURES

摘要

One exemplary embodiment of this disclosure relates to a centrifugal refrigerant compressor system. The system includes a condenser, an evaporator, and an economizer between the condenser and the evaporator. The system further includes a centrifugal compressor having a first impeller and a second impeller downstream of the first impeller. The compressor includes at least one port. Fluid from a recirculation flow path and an economizer flow path is introduced into a main flow path of the compressor by way of the at least one port.

主权项

1. A centrifugal refrigerant compressor system, comprising:
a condenser; an evaporator; an economizer between the condenser and the evaporator; and a centrifugal compressor including a first impeller and a second impeller downstream of the first impeller, the compressor including at least one port provided at a location downstream of the first impeller, wherein fluid from a recirculation flow path and an economizer flow path is introduced into a main flow path of the compressor by way of the at least one port.