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U.S. Department of Energy
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Apparatus and method for burning a combustible gas and a heat exchanger for use in this apparatus

Patent ·
OSTI ID:5912768
An apparatus is described capable of functioning as a high-efficiency water heater. This apparatus passes a combustible mixture of gas and air from an impeller into the hollow interior of a cylindrical gas burner. The combustible mixture flows out through apertures in the cylindrical walls of the gas burner and is burned on a cylindrical flame as it emerges from the gas burner; the size of the apertures prevents flash-back of the flames of the combustible mixture into the gas burner. Heat is transferred from the flame to the walls of a cylindrical combustion chamber surrounding the gas burner and the combustion products generated pass to a heat exchanger comprising a vertical riser and a downwardly extending helical section which ensures maximum heat transfer to liquid in the tank surround the combustion chamber and heat exchanger. The apparatus may be used solely as a water heater or may serve as a combined gas furnace and water heating system.
Assignee:
Columbia Gas System Service Corporation
Patent Number(s):
US 4541410
OSTI ID:
5912768
Country of Publication:
United States
Language:
English