Novel heat exchanger for electronics with extended inner surface

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F16%3A00306441" target="_blank" >RIV/68407700:21220/16:00306441 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Novel heat exchanger for electronics with extended inner surface

Original language description

A first prototype of hermetic metal foam air/air heat exchanger with extended inner surface was developed for an efficient cooling of electronic components and particle detectors by cold streams of air produced by our AIRCOOLER units. Since the construction of the heat exchanger is hermetic it can be placed in a vacuum chamber where the cooling air inlet and outlet tubes entering the heat exchanger body via feedthroughs in the chamber wall. An efficient heat exchange with the stream of cooling air is realized by the use of aluminium foam that fills the oblique shaped inner cavity of the heat exchanger and significantly expands inner contact surface of the heat exchanger. Desing and know-how owner - CTU Prague, Department of Physics (doc. Vacek research group).

Czech name

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Czech description

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Type

G_funk - Functional sample

CEP classification

BJ - Thermodynamics

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Internal product ID

HeatExchanger_2016_003

Numerical identification

2016003

Technical parameters

The heat exchanger dimensions are 35 x 77 mm and the height is 13.5 mm. The bottom side (37 x 80 mm) can be in direct contact with the cooled electronic. The shell of the heat exchanger is made from machined aluminium. Three 8 mm connection ports are provided on the top side to allow for flexible arrangement of the air supply. The interior is divided into three section filled with the aluminium foam. The parameter of the aluminium foam is following: bulk density: 0.2 g/cm3, porosity: 93% and pores: 2/cm. Two variants were developed and tested. The first one is using an inference fit to hold the foam in palace and to provide the heat conduction between the foam and the heat exchanger aluminium shell. The second variant uses and aluminium filled epoxy glue that minimizes the thermal resistance and increases the performance of the heat exchanger.

Economical parameters

The cost of the heat exchanger is a sum of two main parts: machining of the aluminium box and the foam filler. The approximate cost of one single prototype unit capable to transfer efficiently about 20W in vacuum ambient is 12 thousand CZK. Foreseen applications would require typically between 6 and 12 heat exchanger units

Application category by cost

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Owner IČO

68407700

Owner name

ústav fyziky

Owner country

CZ - CZECH REPUBLIC

Usage type

P - Využití výsledku jiným subjektem je v některých případech možné bez nabytí licence

Licence fee requirement

Z - Poskytovatel licence na výsledek nepožaduje v některých případech licenční poplatek

Web page

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