Heating – Processes of heating or heater operation – Including preparing or arranging work for heating
Patent
1976-04-01
1978-01-24
Camby, John J.
Heating
Processes of heating or heater operation
Including preparing or arranging work for heating
432224, F27D 100
Patent
active
040701476
ABSTRACT:
A method of heating a closed metal shell defining a tank having top and bottom portions, comprising positioning a substantially vertical metal tube to extend upwardly from about the bottom of the tank to an opening in the tank top, said tube having insulation for retarding heat flow from the tank interior space into the tube interior space, providing the tank top portion with a plurality of hot gas exhaust ports communicating with the tank upper interior space and the atmosphere, positioning a burner in the bottom portion of the tube, firing the burner with a fuel and directing the resulting flame and hot combustion gases from the burner away from the tube to heat the metal shell, and controllably venting hot gases from the tank through the exhaust ports to the atmosphere by a natural-draft stack-effect thereby reducing the pressure in the tube and inducing atmospheric air to flow downwardly into and through the tube to the burner to supply oxygen for combustion of the fuel.
An assembly comprising a closed metal shell tank fabricated by welding and requiring post-weld heat treatment, insulation on substantially the entire exterior surface of the tank, a substantially vertical metal tube extending upwardly from the bottom of the tank to an opening in the tank top, said tube having insulation for retarding heat flow from the tank interior space into the tube interior space, a plurality of hot gas exhaust ports in the tank top portion communicating with the tank upper interior space and the atmosphere, and at least one burner in the bottom portion of the tube.
REFERENCES:
patent: 655092 (1900-07-01), Kopping
patent: 896070 (1908-08-01), Williams
patent: 1037013 (1912-08-01), Jones
patent: 2294168 (1942-08-01), Francis et al.
patent: 2705627 (1955-04-01), Norgaard
patent: 2772082 (1956-11-01), Hortvet
Sheneman Donald
Sikora Orwill Granger
Camby John J.
Chicago Bridge & Iron Company
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