F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
F22D1/02—Feed-water heaters, i.e. economisers or like preheaters with water tubes arranged in the boiler furnaces, fire tubes or flue ways
Cheminee autoportante de recuperation d'energie a condensation sous la forme d'un echangeur de chaleur "fumee-eau" a contre courant (pour toutes chaudieres seches ou foyers).
Echangeurs de chaleur a surfaces d'echange plissee et systemes de prelevement des calories evacuees par les fumees sortant des chambres de combustion