Pressure limiting control for an inlet draft fan in an electric

Details Pressure limiting control for an inlet draft fan in an electric Pressure limiting control for an inlet draft fan in an electric

1978-10-11

1980-06-03

Favors, Edward G.

Liquid heaters and vaporizers

Miscellaneous

110162, 236 15C, F27D 706

Patent

active

042056314

ABSTRACT:
The inlet vanes for an induced draft (ID) fan in a power plant boiler are position controlled in accordance with the furnace pressure to limit the potential destructive power developed by the fan. The ID inlet suction temperature is sensed and a control signal is developed as a function of the inlet temperature to limit the opening of the inlet vanes during boiler startup.

REFERENCES:
patent: 3416470 (1968-12-01), Hey et al.
patent: 3736360 (1973-05-01), Bergman et al.
patent: 3739484 (1973-06-01), Wilkening et al.
patent: 3889877 (1975-06-01), Kivlen
patent: 3964675 (1976-06-01), Euchner
patent: 3985294 (1976-10-01), Guido et al.

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