Browse Prior Art Database

Jet Impingement Cold Plate for Local Temperature Control

IP.com Disclosure Number: IPCOM000119039D
Original Publication Date: 1997-Nov-01
Included in the Prior Art Database: 2005-Apr-01
Document File: 2 page(s) / 59K

Publishing Venue

IBM

Related People

Chrysler, GM: AUTHOR [+2]

Abstract

Disclosed is a method which allows uniform temperature operation of a highly non-uniform heat flux multichip module.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 63% of the total text.

Jet Impingement Cold Plate for Local Temperature Control

      Disclosed is a method which allows uniform temperature
operation of a highly non-uniform heat flux multichip module.

      A water jet impingement cold plate utilizing either single
jets over chip sites or multiple jets over chip sites provides the
heat dissipation rates required and allows for tailoring the cooling
to match  the local heat flux.  There are two flavors of the
impingement cold plate.  The first design uses a regular array (or
even irregular array  if the module power dissipation is highly
non-uniform) of circular jets.  The second design uses slot jets.

      A typical impingement cold plate with circular jets is
illustrated in the Figure.  The heat transfer surface, adjacent to
the electronics module to be cooled and opposite the jet plate, is
the heat transfer plate.  A simple flat surface can be used for most
cases since the heat transfer via impingement (especially with water)
is very efficient.  Water is supplied through a coolant inlet at one
end of the impingement plate.  After passing through the orifice and
impinging on the heat transfer plate, it is collected at the opposite
end of the cold plate where it passes through the coolant outlet to
the remainder of the cooling system for processing.

      For additional thermal performance, the impingement area can be
enhanced with extended surfaces.  A pinfin surface is presented in
the Figure.  Due to the effici...