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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
F22D3/00—Accumulators for preheated water
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FR559918D1922-03-181922-03-18Dispositif pour la récupération de la chaleur des gaz du foyer dans les chaudières verticales
ExpiredFR559918A
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Procédé pour le fonctionnement économique des installations de chaudières et autres installations analogues avec chauffage préalable par les gaz de combustion