05224542 is referenced by 14 patents and cites 26 patents.

A radiant tube heater is provided for a gas fired burner which fires heated products of combustion into an inner longitudinally-extending tube which is concentrically pinned to an outer longitudinally-extending tube which in turn is concentrically mounted within a heat transfer, tube which radiates heat to work. The outer and inner transfer tubes have closed axial ends opposite the burner and the inner tube is radially spaced closely adjacent the outer tube to define an annular heat transfer passage therebetween. A specific hole size pattern in the inner and outer tubes in combination with the radial distance of the heat transfer passage insure long path gas flow lengths which promote laminar flow and even heat distribution along the length thereof thus producing a radiant tube which radiates heat uniformly from the heat transfer tube to the work along its length.

Title
Gas fired radiant tube heater
Application Number
469173
Publication Number
5224542
Application Date
January 6, 1992
Publication Date
July 6, 1993
Inventor
Klaus H Hemsath
Toledo
OH, US
Agent
Body Vickers & Daniels
Assignee
Indugas
OH, US
IPC
E21B 43/24
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