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Browse Prior Art Database

Insert for High Performance Heat Transfer in a Vertical Cooling Channel

IP.com Disclosure Number: IPCOM000106501D
Original Publication Date: 1993-Nov-01
Included in the Prior Art Database: 2005-Mar-21
Document File: 4 page(s) / 129K

Publishing Venue

IBM

Related People

Ellsworth, MJ: AUTHOR [+3]

Abstract

One way to achieve improved convective heat transfer in a flat or rectangular cooling channel is to reduce the channel width. Unfortunately narrow channels with high aspect ratios are not manufacturable by conventional means.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 52% of the total text.

Insert for High Performance Heat Transfer in a Vertical Cooling Channel

      One way to achieve improved convective heat transfer in a flat
or rectangular cooling channel is to reduce the channel width.
Unfortunately narrow channels with high aspect ratios are not
manufacturable by conventional means.

      Disclosed is a channel insert 101 that can be placed in a
wider, more manufacturable channel 102 to form two narrow, high
performance cooling channels 103,104.  The inserts are formed from a
coiled strip 201 of a suitable material, into which open channels 202
are readily formed on each face by skiving or continuous milling,
thus giving the insert its profile.  Inserts of the desired shape are
then stamped 203 from the stock material.  The un-skived/milled
regions, or webs 204, of the insert serve to properly position the
channels in the larger slot.  Three profiles are illustrated:  I-Beam
205, Modified I-Beam 206, and T-Beam 207.  There are three ways that
an insert can be installed in a channel:  with a slip fit 105, a
press fit, or a bond (e.g., solder, braze, adhesive) 106 between the
webs and the outer channel walls.

      In the case of a slip fit 105, the insert does not participate
in the heat dissipation process; convective cooling takes place from
only the two outer channel walls 107.  Cooling performance is
therefore independent of the insert material, and the insert could be
made of a plastic or other poor thermal conductor.  A V-groove 108 or
square notch 109 may be used to align the base of the insert as an
alternative to the use of the web, particularly when a modified
I-Beam or a T-Beam profile is implemented.  This approach can yield
performance enhancements, particularly for slip fit conditions, since
the average chip-to-coolant heat flow path and the attendant
resistance to heat flow are reduced.

      In the case of a press fit or a thermally cond...