Browse Prior Art Database

Single Side Inlet/Outlet, Parallel Flow High Capacity Electronic Card Cooling Coldplate

IP.com Disclosure Number: IPCOM000112549D
Original Publication Date: 1994-May-01
Included in the Prior Art Database: 2005-Mar-27
Document File: 2 page(s) / 43K

Publishing Venue

IBM

Related People

LoPresti, MA: AUTHOR

Abstract

This coldplate design provides high heat removal rates by utilizing a parallel flow system to allow high liquid flowrates while maintaining a low pressure drop from inlet to outlet. This is a single part design which provides both inlet and outlet connections on one side of the part.

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Single Side Inlet/Outlet, Parallel Flow High Capacity Electronic
Card Cooling Coldplate

      This coldplate design provides high heat removal rates by
utilizing a parallel flow system to allow high liquid flowrates while
maintaining a low pressure drop from inlet to outlet.  This is a
single part design which provides both inlet and outlet connections
on one side of the part.

      The part consists of a stainless steel core cast within an
aluminum plate.  The cooling core uses a set of plenums and parallel
tubes to route the liquid through the Al plate.  Liquid flows through
two inlet tubes and into the first plenum section which distributes
liquid into 4 smaller diameter tubes approximately 11" long.  Liquid
is then gathered into the right hand large plenum and routed to the
upper 4 tubes for flow back through the coldplate to the smaller
outlet plenum.  The outlet plenum discharges to the 2 outlet tubes
for discharge from the part.

      The plenums are used to balance pressure across the 4 smaller
dia tubes which run the length of the plate.  Contrary to current
designs where 1 single serpentine tube is cast within an aluminum
plate, this design allows high heat removal rates by allowing a
larger fluid flowrate with minimal pressure drop.

      This design has preferred heat removal because the fluid only
makes two passes through the coldplate and thus heat removal is
consistent throughout the plate.  Series path (serpentine) coldplates
tend t...