Refrigeration – Automatic control – Of external fluid or means
Patent
1975-08-04
1976-09-14
Wayner, William E.
Refrigeration
Automatic control
Of external fluid or means
62305, 165 39, 236 99D, F25B 3904
Patent
active
039799239
ABSTRACT:
A preassembled unit for subcooling the refrigerant in existing air conditioning and refrigeration systems to a temperature less than its saturated vaporization temperature. The unit is installable in existing refrigeration systems and has the capability to increase the efficiency of such systems. A coaxial tube heat exchanger includes a refrigerant tube to be connected between the system condenser and expansion valve, and a cooling medium tube through which a flow of cooling water is provided. A thermostatically-operated control valve is utilized to adjust the flow of water in response to the refrigerant outlet temperature. The control valve ensures that only the minimum quantity of water necessary to reduce the refrigerant temperature to a selected value is used. The heat exchanger and control valve are completely enclosed in a block of plastic foam to prevent a high ambient temperature from affecting these elements. An alternative embodiment of the invention includes a spray head to be attached to an air-cooled condenser and arranged to discharge the outlet cooling water so as to impinge on the condenser heat exchange surfaces. The resultant evaporation of the water removes additional heat from the condenser and contributes to an additional increase in system efficiency.
REFERENCES:
patent: 2016587 (1935-10-01), Beckman
patent: 2318161 (1943-05-01), Johnson et al.
patent: 2577903 (1951-12-01), McGrath
patent: 2610479 (1952-09-01), Iwashita
patent: 3177929 (1965-04-01), Jennings
Wayner William E.
Wiggins Macdonald J.
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