Multi-channel flat tube
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United States of America Patent
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Mar 19, 2002
Grant Date -
Jun 21, 2001
app pub date -
Feb 5, 2001
filing date -
Oct 1, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A multichannel flat tube for a heat exchanger has a plurality of parallel flow channels aligned in a row, side by side, along a transverse axis of the tube. At least the inner flow channels have oval cross-sections, and major semiaxes of the inner flow channels are inclined relative to the transverse axis of the tube at an acute angle. The flat tube can be designed for high operating pressures with relatively low weight and relatively high heat exchange capability. The construction may be used, for example, in CO.sub.2 air conditioners in motor vehicles.
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