Method and apparatus for protecting a double-shelled chimney sta

Details Method and apparatus for protecting a double-shelled chimney sta Method and apparatus for protecting a double-shelled chimney sta

1975-11-17

1977-02-22

Wayner, William E.

Pipes and tubular conduits

Repairing

98 58, 138 38, 138148, 165128, E04F 1704

Patent

active

040086550

ABSTRACT:
An improved chimney stack of the type having at least one flue through which gases flow and an outer shell for establishing an insulating space surrounding the flue wherein the present improvement includes heat exchanger means secured to the flue and having first and second ports with the first port extending through the outer shell and communicating with the outside air and with the second port communicating with the insulating space surrounding the flue and wherein the heat exchanger means admits and heats outside air and discharges heated outside air into the insulating space surrounding the flue during cool down of the chimney stack whereby minimization of condensation of flue gasses during cool down of the chimney stack is achieved.

REFERENCES:
patent: 762203 (1904-06-01), Segerstrom
patent: 2011018 (1935-08-01), Smith
patent: 2197243 (1940-04-01), Moran
patent: 2526097 (1950-10-01), Sveinson
patent: 2841071 (1958-07-01), Strawsine
patent: 3513908 (1970-05-01), Singh
patent: 3693883 (1972-09-01), Stigger

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