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U.S. Department of Energy
Office of Scientific and Technical Information

Oil and gas water heater

Patent ·
OSTI ID:6361794
A fluid heater is described comprising a vertically oriented fluid storage tank having inner and outer tubular walls defining a fluid storage area therebetween. A fuel burner is positioned beneath the tank in a partially sealed combustion chamber for heating the fluid in the tank. The inner tubular wall forms a flue for hot combustion gases generated by the burner. Tubular exhaust vent means form a continuation of the flue for exhausting hot combustion gases from the flue to outside the fluid heater. First air inlet means permit air to be drawn by a draft from outside the fluid heater into the chamber. Fluid flow responsive means operate to open and close the first air inlet means in relation to the flow rate of fluid through the tank.
Assignee:
NOV; EDB-87-111203; NOV-87-062124
Patent Number(s):
US 4664096
OSTI ID:
6361794
Country of Publication:
United States
Language:
English