Method and apparatus for using low grade thermal energy to impro

Details Method and apparatus for using low grade thermal energy to impro Method and apparatus for using low grade thermal energy to impro

1982-11-12

1984-03-27

Wayner, William E.

Refrigeration

Processes

Compressing, condensing and evaporating

62332, 62500, F25B 100

Patent

active

044386338

ABSTRACT:
A method and apparatus for utilizing low grade thermal energy is shown to reduce the energy required to drive the compressor of a refrigeration or air conditioning system. The thermal energy is used to vaporize a fluid which is used as a motive fluid to drive a thermal compressor, such as a jet compressor or a vapor compression cycle compressor. In a normal air conditioning system including a condenser, expansion valve, evaporator and compressor, the jet compressor is inserted between the discharge of a compressor and the inlet for the condenser when there is sufficient thermal energy to drive a thermal compressor. This produces a two-stage compressor which improves the efficiency of the overall system. If separate fluids are utilized, a thermal evaporator is located in a heat exchange relationship with the condenser to cool the refrigerant fluid within the condenser tube, a tube-in-tube arrangement being such a heat exchange relationship.

REFERENCES:
patent: 1836318 (1931-12-01), Gay
patent: 3496735 (1970-02-01), Haisma
patent: 4007776 (1977-02-01), Alkasab
patent: 4023948 (1977-05-01), Pitts et al.
patent: 4024908 (1977-05-01), Meckler
patent: 4123003 (1978-10-01), Winston
patent: 4128124 (1978-12-01), Worthington
patent: 4173994 (1979-11-01), Hiser
patent: 4242885 (1981-01-01), Quack et al.

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