Critical temperature control with vortex cooling

Details Critical temperature control with vortex cooling Critical temperature control with vortex cooling

1996-06-10

1997-11-04

Capossela, Ronald C.

Refrigeration

Vortex tube, e.g., ranque

661238, F25B 902

Patent

active

056827490

ABSTRACT:
Variations in the air outlet temperature of a vortex cooler which varies with the inlet temperature and pressure are maintained within precise limits by a thermocouple electrically connected to a feedback loop which controls the vortex inlet air pressure in response to the signal from the thermocouple. A pneumatic inlet air control valve, along with a microprocessor based transmitter/controller and an I/P Converter pneumatically connected to the vortex inlet air control valve comprise the feedback loop. This maintains the cold air outlet temperature of the cooler within one degree of the desired temperature, despite fluctuations in the inlet air pressure and temperature.

REFERENCES:
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patent: 3173273 (1965-03-01), Fulton
patent: 3208229 (1965-09-01), Fulton
patent: 3654768 (1972-04-01), Ingles et al.
patent: 3815375 (1974-06-01), Ingus
patent: 3858403 (1975-01-01), Dunn
patent: 4980049 (1990-12-01), Huh et al.
patent: 4980050 (1990-12-01), Huh et al.
patent: 5205126 (1993-04-01), Schnurr et al.

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