for heating the incoming air

Full Title

Combustion apparatus characterised by arrangements for air supply > Disposition of air supply not passing through burner > for heating the incoming air

Classification Context

Section:

MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

Class:

COMBUSTION APPARATUS; COMBUSTION PROCESSES

Subclass:

METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN AIR

Child Classifications

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• F23C 7/08 indirectly by a secondary fluid other than the combustion products