Internal heat exchange tubes for inductrial furnaces
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United States of America Patent
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-
Jul 30, 1991
Grant Date -
N/A
app pub date -
Jul 23, 1990
filing date -
Jul 23, 1990
priority date (Note) -
Expired
status (Latency Note)
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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.
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