Air source heat pump with displacement doubling through multiple

Details Air source heat pump with displacement doubling through multiple Air source heat pump with displacement doubling through multiple

1978-12-21

1980-07-01

Wayner, William E.

Refrigeration

Reversible, i.e., heat pump

With product treatment

62 87, 417237, 417374, F25B 900, F04B 914

Patent

active

042099986

ABSTRACT:
A closed loop refrigeration system such as an air source heat pump includes a hermetic screw compressor and a helical screw rotary expander connected to an electric induction drive motor. The closed loop refrigeration circuit permits an air source evaporator to constitute a heat source for supplying vaporized refrigerant to the compressor and expander, while both are mechanically coupled to the electric induction drive motor and with both driven as compression units. The air source evaporator feeds to slide valve controlled inlet ports of both the compressor and expander. Compressed vapor from both units passes to condenser coil(s) such as heating condensers to increase the system capacity under this mode.

REFERENCES:
patent: 3321930 (1967-05-01), La Fleur
patent: 3932159 (1976-01-01), Goldsberry

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