Heat pump with a two-speed compressor

Details Heat pump with a two-speed compressor Heat pump with a two-speed compressor

F - Mech Eng,Light,Heat,Weapons

25

B

62/25

F25B 13/00 (2006.01)

Patent

CA 1076826

ABSTRACT A method of operating a heat pump including a multispeed compres- sor and a heat pump apparatus including a multispeed compressor, wherein the compressor is actuated at a relatively high speed during the normal heating mode of operation and at a relatively low speed during the heating mode of operation when frost accumulates on the outdoor coil so as to de- frost the outdoor coil without actuating the reversing means of the heat pump system. The lower end of the operating range of the heat pump can be extended by running a heat pump system including a two-speed compressor at low speed during ambient conditions of about 0°F. At low speed operation, the effective outdoor coil surface is twice that at full speed and the heat pulp system can continue to operate without resorting to more costly auxiliary electric strip heat.

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