Heater damper controller

Details Heater damper controller Heater damper controller

1979-09-17

1982-05-18

Scott, Samuel

Combustion

With indicator or inspection means

Correlated with action of condition responsive burner control

431 20, 431 76, 236 15E, F23N 300

Patent

active

043302610

ABSTRACT:
A microprocessor based controller for regulating the position of a stack damper in a combustion furnace by feedback control adjusting damper position in view of an operator input target value of excess oxygen and an actual monitored excess oxygen value. A feedforward control overrides the feedback control for a time period initiated by the feedforward control responding to process variables indicating increase in combustion demand.

REFERENCES:
patent: 3074644 (1963-01-01), Geniesse
patent: 3602487 (1971-08-01), Johnson
patent: 3947217 (1976-03-01), Graat et al.
patent: 3954383 (1976-05-01), Bryant
patent: 4045292 (1977-08-01), Matsushita et al.
patent: 4097218 (1978-06-01), Womack
patent: 4112885 (1978-09-01), Iwata et al.
"Computerized Control System for Improved Combustion Efficiency", Gulitz et al., IBM Technical Disclosure Bulletin, vol. 18, No. 2, Jul. 1975, pp. 428-429.

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