Browse Prior Art Database

Central Exit Both Inlets Air Cooled Heat Sink

IP.com Disclosure Number: IPCOM000108419D
Original Publication Date: 1992-May-01
Included in the Prior Art Database: 2005-Mar-22
Document File: 1 page(s) / 50K

Publishing Venue

IBM

Related People

Yuan, TD: AUTHOR

Abstract

Disclosed is a design of heat sink for high performance mainframe computer cooling using dual inlets and central exit configuration. Without changes in plenum and blower this heat sink offers lower pressure drop and higher fin efficiency to achieve the cooling requirements than the current design.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 86% of the total text.

Central Exit Both Inlets Air Cooled Heat Sink

      Disclosed is a design of heat sink for high performance
mainframe computer cooling using dual inlets and central exit
configuration.  Without changes in plenum and blower this heat sink
offers lower pressure drop and higher fin efficiency to achieve the
cooling requirements than the current design.

      The commonly used heat sink requires a high density parallel
channel fins to cool a module with 600 watts.  To extend to higher
cooling power and its environment, the current design requires a
higher pressure drop penalty and a cost for new plenum and blower in
the system.  As it is not cost effective, an alternative way is
needed.

      This invention offers a design plan in which inlets are from
both ends and exits are formed at the central top potions.  The
trapezoidal fins are inserted to form the inlet and exit as shown in
the figure.  The number for the fins and width of the gap and fin of
the design remains the same as the current one.  However, the height
of the fin is about half of the previous design.  With this design,
the air flow path is reduced by half so that the pressure drop is
small and most of the flow field is not fully developed. This leads
to enhancement of thermal performance and reduction of flow pressure
drop which lead to a high performance heat sink.

      The manufacturing process for the heat sink is the same as the
commonly used one.  Prototypes were built.  Test re...