Process for controlling wet bulb temperature for curing and dryi

Details Process for controlling wet bulb temperature for curing and dryi Process for controlling wet bulb temperature for curing and dryi

1994-01-26

1995-07-11

Bahr, Jennifer

Tobacco

Tobacco treatment

With fluid or fluent material

131300, A24B 304

Patent

active

054311756

ABSTRACT:
The present invention entails a process for curing and drying tobacco and other related agricultural products. A three-mode controller having proportional, integral and derivative functions is utilized to actuate an inlet damper associated with a curing and drying structure. In order to compensate for outside environmental changes and dynamic changes within the structure, a proportional, integral and derivative tuning module is provided which continues to tune and establish new proportional, integral and derivative functions as the curing and drying process is moved up a temperature ramp.

REFERENCES:
patent: 3840025 (1974-10-01), Fowler et al.
patent: 3905123 (1975-09-01), Fowler et al.
patent: 4192323 (1980-03-01), Horne
patent: 4434563 (1984-03-01), Graalmann et al.
patent: 4709708 (1987-12-01), Kagawa
patent: 4723560 (1988-02-01), Kagawa
patent: 4788989 (1988-12-01), Nambu et al.
patent: 4836222 (1989-06-01), Livingston
patent: 5125420 (1992-06-01), Livingston

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