Internal heat exchange tubes for industrial furnaces

Details Internal heat exchange tubes for industrial furnaces Internal heat exchange tubes for industrial furnaces

1991-05-02

1992-05-26

Yuen, Henry C.

Heating

With work cooling structure

432176, 126 21A, F27D 700

Patent

active

051162210

ABSTRACT:
An internal heat exchange tube for cooling work within an industrial furnace is positioned to extend within the furnace and is closed at its axial end which is inside the furnace. Within the tube is an open ended, thin wall inner tube formed in the shape of a helical coil. Water introduced into the inner tube distributes thermally induced, circumferential stress gradients about both tubes to prevent tube bending while achieving fast cooling of the outer tube.

REFERENCES:
patent: 3140743 (1964-07-01), Cone
patent: 4275569 (1981-06-01), Mayers et al.
patent: 4395233 (1983-07-01), Smith et al.
patent: 4789333 (1988-12-01), Hemsath
patent: 4906182 (1990-03-01), Moller
patent: 4963091 (1990-10-01), Hoetzl et al.

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