公开(公告)号：US10704810B2

公开(公告)日：2020-07-07

申请号：US14650598

申请日：2014-12-12

Applicant: JOHNSON CONTROLS TECHNOLOGY COMPANY

Inventor： Paul W. Snell ,  Eric John Smyder ,  Dale M. Unger

IPC: F25B11/00 ,  F25B49/02 ,  F25B31/02 ,  F25B1/04 ,  F25B31/00 ,  F25B1/053 ,  F25B27/00 ,  F25B41/00 ,  F25B1/10

Abstract: A centrifugal heat pump system includes a steam system with a steam supply, a steam turbine and a steam condenser connected in a steam loop; and a refrigerant system including a first compressor and a second compressor, a refrigerant condenser, and an evaporator connected in a refrigerant loop. The steam turbine includes a rotary drive shaft disposed axially and extending from a first end and a second end of the steam turbine. A sump system collects and redistributes oil or other lubricating fluid. The first compressor is coupled by a first coupling device to the first end of the steam turbine drive shaft and the second compressor is coupled by a second coupling device to the second end of the steam turbine drive shaft. The first and second compressors are connected in parallel in the refrigerant loop and controlled to share a cooling load equally.