Heat pumps

Details Heat pumps Heat pumps

F - Mech Eng,Light,Heat,Weapons

25

B

62/25, 341/28

F25B 13/00 (2006.01) F25B 49/02 (2006.01) H02P 23/00 (2006.01) H02M 7/5387 (2006.01)

Patent

CA 1094836

ABSTRACT A heat pump adaptable for air conditioning or refrigeration use and having a compressor driven by a polyphase electric induction motor, the heat transfer capacity and direction being controllable by controlling the speed and direction of the motor using control equipment to sequentially switch a DC power supply, Both the frequency and effective average phase voltage may be varied to suit the load.

328862

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