Heat exchange – With repair or assembly means
Patent
1982-03-04
1984-12-04
Davis, Jr., Albert W.
Heat exchange
With repair or assembly means
165 82, 16510414, 165135, 122 33, 122511, 285 47, 285137R, 285221, F28D 1500, F28F 910
Patent
active
044858655
ABSTRACT:
A system for recovering waste heat from a stream of heated gas is disclosed. The system includes a convection heat transfer chamber, a boiler tank, and a plurality of heat pipes thermally interconnecting the convection heat transfer chamber with the boiler tank. Each of the heat pipes includes an evaporator section which is disposed in heat transfer relation with a stream of heated gas flowing through the convection heat transfer chamber, and a condenser section disposed in heat transfer relation with a volume of water contained within the boiler tank. The boiler tank is provided with a header plate having an array of heat pipe openings through which the heat pipes project. A heat pipe support sleeve is received in each heat pipe opening in sealed engagement with the header plate, with the heat pipes projecting through the support sleeves and thermally interconnecting the convection heat transfer chamber with the boiler tank. An intermediate portion of each heat pipe is received in sealed engagement with its associated support sleeve. In a preferred embodiment, heat transfer through the support sleeve is minimized in an arrangement in which each heat pipe opening is reduced by a stepped bore with the support sleeve connected in threaded, sealed engagement with the stepped bore. Furthermore, in this arrangement, the support sleeve has swaged end portions which project beyond the header plate and engage the heat pipe on opposite sides at points which are remote with respect to the support sleeve/header plate interface. One of the swaged end portions is sealed against the heat pipe in a fluid-tight union within the boiler tank. The support sleeve is radially spaced with respect to the heat pipe and is also radially spaced with respect to the heat pipe opening whereby heat transfer through the walls of the heat pipe to the support sleeve and to the header plate is minimized by concentric annular air gaps.
REFERENCES:
patent: 1012258 (1911-12-01), Johnson
patent: 3854454 (1974-12-01), Lazaridis
patent: 3945431 (1976-03-01), Straub
patent: 4079967 (1978-03-01), Schoessow
patent: 4192374 (1980-03-01), Hayden et al.
Davis Jr. Albert W.
Q-Dot Corporation
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