FINNED TUBE WITH INDENTATIONS
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United States of America Patent
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N/A
Issued Date -
Oct 2, 2008
app pub date -
Mar 26, 2008
filing date -
Mar 27, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A tube used for heat transfer has adjacent fins extending from an outer surface of the tube with a channel between the fins. The fins include a roof formed over the channel, and holes penetrate the roof into the channel. The fin, including the roof, is monolithic with the tube body. Helical ridges are formed on a tube inner surface, and the tube body includes an indentation in the outer surface which extends the tube body inner surface towards a tube axis.
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