Direct expansion solar collector-heat pump system

Details Direct expansion solar collector-heat pump system Direct expansion solar collector-heat pump system

1980-02-11

1983-07-12

Makay, Albert J.

Refrigeration

Utilizing solar energy

623244, 237 2B, 126446, 126447, F25B 2700, F25B 1300

Patent

active

043923593

ABSTRACT:
A solar collector-heat pump heating system which comprises metallic plates which are directly exposed to the ambient atmosphere and which are in direct heat exchange relation with tubes. A compressor receives a heated low-boiling working fluid, e.g., R-22, from the tubes as a vapor, compresses it and delivers it to a condenser. The fluid then passes through a throttling valve where it partially vaporizes, then to the tubes, where vaporization continues, utilizing heat absorbed by the plates from solar radiation, the ambient air, rain, and long-wave infrared radiation. Heat is extracted from the condenser and used for space heating. Preferably, heat storage means, e.g., a tank of water or a body of low-melting salt, are provided. Preferably, the heat-absorbing plates are long and narrow. In one embodiment they are spaced from a diffuse reflective backing and are laterally spaced from each other. In another embodiment they form a siding for a building. When heat storage is provided, the system can also serve for cooling by reversing the flow of the working fluid and rejecting heat through the plates at night.

REFERENCES:
patent: 2342211 (1944-02-01), Newton
patent: 2396338 (1946-03-01), Newton
patent: 2693939 (1954-11-01), Marchant et al.
patent: 3797476 (1974-03-01), Tarcici
patent: 3957030 (1976-05-01), Davis
patent: 4011855 (1977-03-01), Eshelman
patent: 4065938 (1978-01-01), Jonsson
patent: 4120284 (1978-10-01), Cotsworth et al.
patent: 4232820 (1980-11-01), Ritter et al.

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