Heating systems – Air – Flue heated
Patent
1978-09-07
1980-06-10
Favors, Edward G.
Heating systems
Air
Flue heated
110326, 122 20B, 122DIG1, 165DIG2, F24B 704
Patent
active
042068754
ABSTRACT:
A recuperator for recovering heat from hot exhaust gases flowing through a flue comprises inner and outer cylindrical walls coaxially surrounding a portion of the flue to which a plurality of fins are fixed, the fins extending longitudinally of the flue and being grouped such that fins spaced circumferentially around one section of the flue are angularly staggered with respect to fins spaced circumferentially around an adjacent section of the flue, the recuperator being arranged such that cold gas can be passed into, and is preheated as it flows along, an outer annular space between the said walls, the gas passing into an inner annular space containing the fins which cause turbulence and increase the heat-transfer by convection and radiation to the gas, and the heated gas being emitted through an outlet.
REFERENCES:
patent: 2348901 (1944-05-01), Handley
patent: 3736961 (1973-06-01), Walsh
patent: 4098325 (1978-07-01), Scheel
patent: 4113009 (1978-09-01), Meyer et al.
patent: 4147303 (1979-04-01), Talucci
Favors Edward G.
FIAT Societa per Azioni
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