Flat, hollow coldplate that permits the flow of coolant liquid removes heat from heat-generating electronic equipment. This coldplate solves usual problems of bulk, weight, and excessive pumping requirements

Dyer, W. F.

English

NASA Technical Reports Server

April 1967
	
Brief 67-10073 
NASA TECH BRIEF	
-0 
NASA Tech Briefs are issued to summarize specific innovations derived from the U.S. space program, 
to encourage their commercial application. Copies are available to the public at 15 cents each 
from the Clearinghouse for Federal Scientific and Technical Information, Springfield, Virginia 22151. 
---
Coldplate of Pin Fin Design Makes Efficient Heat Exchanger 
The problem: 
To efficiently remove heat from heat-generating 
electronic equipment in confined areas that limit or 
deny conventional convective action. Coldplates using 
liquid coolants frequently present problems of bulk, 
weight, and excessive pumping requirements. 
The solution: 
A coldplate that is flat and hollow to permit the 
flow of coolant lqid within it. Heat-generating elec-
tronic equipment i ,mounted to one flat surface of the 
coldplate, which attracts the generated heat by con-
duction. The two major walls of the coldplate are 
joined by metal pins of high thermal conductivity, 
arranged in a pattern that is custom designed to best 
accommodate the thermal profile of a specific heat-
generating electronic device. By conduction, heat is 
removed from the electronic equipment-mounting face 
of the coldplate along the thermal paths of the pins 
into the flowing coolant liquid, which carries the heat 
away by convection. Baffles are designed and placed 
within the coldplate to eliminate stagnant or non-flow 
areas and to direct flow distribution to provide 
adequate volume to areas of high heat generation.
Notes: 
1. By design of pin field configuration within the cold-
plat, coupled with baffle placement and flow rate 
control, heat-generating electronic equipment in a 
wide range of configurations with varying heat pro-
ducing components may be operated at design tem-
peratures. 
2. Inquiries concerning this invention may be di-
rected to: 
Technology Utilization Officer 
Manned Spacecraft Center 
Houston, Texas 77058 
Reference: B67-10073 
Patent status: 
Inquiries about obtaining rights for the commercial 
use of this invention may be made to NASA, Code 
GP, Washington, D.C. 20546. 
Source: Wayne F. Dyer et at
of North American Aviation, Inc.
under contract to

Manned Spacecraft Center 
(MSC-1093) 
Category 05 
This document was prepared under the sponsorship of the National 
Aeronautics and Space Administration. Neither the United States 
Government nor any person acting on behalf of the United States
Government assumes any liability resulting from the use of the 
information contained in this document, or warrants that such use 
will be free from privately owned rights.
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Coldplate of pin fin design makes efficient heat exchanger

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