Combustion state diagnostic method

Details Combustion state diagnostic method Combustion state diagnostic method

1983-08-30

1985-11-26

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

250554, 340577, G06K 900, G01J 110

Patent

active

045558000

ABSTRACT:
A method of diagnosing a combustion state in a furnace of a boiler wherein the shape of the root part of a flame (namely, the part closer to the fuel jet port of a burner) is picked up by an image sensor or the like, and the combustion state is diagnosed from the shape. Concretely, the relationships between the shapes of the root parts of flames and the combustion states of the furnace, e.g., the amount of CO or the amount of NOx are experimentally or empirically ensured and are stored in advance, one of the patterns of the stored flame shapes is selected on the basis of the shape of the root part of the flame actually observed, and the combustion state of the furnace is judged the combustion state of the selected flame shape.

REFERENCES:
patent: 3613062 (1971-12-01), Bloice
patent: 3824391 (1974-07-01), Noltingk et al.
patent: 4176369 (1979-11-01), Nelson et al.
patent: 4280184 (1981-07-01), Weiner et al.

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