Heat exchanger tube
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United States of America Patent
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-
Mar 5, 1991
Grant Date -
N/A
app pub date -
Jun 29, 1989
filing date -
Nov 3, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Essentially triangular turbulators 3 extending at an angle .alpha. to the tube longitudinal plane RLE running through the tube axis RA as well as parallel to the fluid flow direction FSR are arranged on the flat lateral ribs 2 of a heat exchanger tube 1. The turbulators 3 are stamped out of the rib plane and are then bent off at an angle of approximately 90.degree.. They have flash or parting lines 4 rising in the fluid flow direction FSR as well as in the direction of the heat exchanger tube 1. This allows generation of longitudinal vortices 5 downstream of the turbulators 3 which roll over the boundary layers in this location and improve the heat transfer.
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