04310303 is referenced by 19 patents and cites 4 patents.

An internal plug-in recuperator positioned within the exhaust assembly of a furnace for increasing the efficiency of a combustion furnace system by using less fuel input per heat output than conventional systems. Hot exhaust gases flowing within the exhaust assembly heat ambient air are directed through the recuperator before that air is injected into the burner. Preferably, the recuperator is constructed in a counterflow arrangement with an inner recuperator tube positioned within an outer recuperator tube.

Title
Plug-in recuperator and method
Application Number
6/168810
Publication Number
4310303
Application Date
July 11, 1980
Publication Date
January 12, 1982
Inventor
David W Collier
Cannock
GB
Agent
Dressler Goldsmith Shore Sutker & Milnamow
Assignee
W B Combustion
WI, US
IPC
F27B 5/14
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