Finned heat exchange tube and process for forming same
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United States of America Patent
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N/A
Issued Date -
Jun 20, 2002
app pub date -
Aug 31, 2001
filing date -
Sep 1, 2000
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A finned heat exchange tube includes a metal cylindrical central tube having an outer surface and a metal fin helically disposed on and in thermally conductive contact with the outer surface of the tube. The cross-section of the fin is trapezoidal in shape, with a longer and a shorter base, the longer base being in contact with the outer surface of the tube. Alternatively, the fin can have a cross-section substantially rectangular in shape, having rounded comers and sides of longer and shorter dimensions perpendicular to one another, a side of the shorter dimension being in contact with the outer surface of the tube. A process for forming a heat exchanger tube comprises helically winding and securing a metal fin on an outer surface of a metal cylindrical central tube. The fin, which is in thermally conductive contact with the central tube, has a cross-section that can be trapezoidal or substantially rectangular in shape.
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