Kiln control system

Details Kiln control system Kiln control system

1980-12-15

1982-11-02

Schwartz, Larry I.

Drying and gas or vapor contact with solids

Apparatus

With means to treat gas or vapor

34 48, 34 54, 34191, F26B 2108

Patent

active

043566413

ABSTRACT:
A lumber kiln is controlled by a digital computer which periodically changes the wet bulb set point so that the rate of change of moisture content is maintained approximately constant. Reversible fans which circulate air through the lumber are periodically reversed. When they are reversed, the signals from the temperature sensors are reversed so that the temperature from the sensor at the high pressure end of the circulating air path is always used. A plurality of kilns may be controlled by the same digital computer because the computer is insensitive to variations in the operating parameters of the kilns.

REFERENCES:
patent: 2270815 (1942-01-01), Vaughn
patent: 3578298 (1971-05-01), Huribut
patent: 3744144 (1973-07-01), Weis
patent: 3896558 (1975-07-01), Lovgren
patent: 4176464 (1979-12-01), Randolph
patent: 4250629 (1981-02-01), Lewis

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