An Experimental Approach for Thermal Characterization of Water-Cooled Heat Sinks Using Fourier Analysis Techniques

As power electronic applications continue to switch higher levels of voltage and current in smaller-sized component packages, the resulting increase in power density requires efficient thermal management. This paper compares the thermal performance for operating a metal-oxide-semiconductor field-effect transistor on a water-cooled pole-arrayed heat sink versus a novel water-cooled microchannel heat sink. Details are presented on an innovative technique using Fourier analysis techniques for determining the thermal capacitance modeling parameter for the heat sinks from experimental data.

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Experimental and Computational Characterization of a Heat Sink Tester

ASME 2007 InterPACK Conference, Volume 1 ◽

10.1115/ipack2007-33975 ◽

2007 ◽

Author(s):

Aalok Trivedi ◽

Nikhil Lakhkar ◽

Madhusudhan Iyengar ◽

Michael Ellsworth ◽

Roger Schmidt ◽

...

Keyword(s):

Heat Sink ◽

Accurate Determination ◽

Thermal Characterization ◽

High Heat ◽

Heat Fluxes ◽

Thermal Design ◽

Heat Sinks ◽

Junction Temperature ◽

Air Cooling

With the continuing industry trends towards smaller, faster and higher power devices, thermal management continues to be extremely important in the development of electronics. In this era of high heat fluxes, air cooling still remains the primary cooling solution in desktops mainly due to its cost. The primary goal of a good thermal design is to ensure that the chip can function at its rated frequency or speed while maintaining the junction temperature within the specified limit. The first and foremost step in measurement of thermal resistance and hence thermal characterization is accurate determination of junction temperature. Use of heat sinks as a thermal solution is well documented in the literature. Previously, the liquid cooled cold plate tester was studied using a different approach and it was concluded that the uncertainty in heat transfer coefficient was within 8% with errors in appropriate parameters, this result was supported by detailed uncertainty analysis based on Monte-Carlo simulations. However, in that study the tester was tested computationally. In this paper, testing and characterization of a heat sink tester is presented. Heat sinks were tested according to JEDEC JESD 16.1 standard for forced convection. It was observed that the error between computational and experimental values of thermal resistances was 10% for the cases considered.

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Characterization of Light Weight Heat Sink Materials for Thermal Management of Electronics

ASME 2007 InterPACK Conference, Volume 1 ◽

10.1115/ipack2007-33216 ◽

2007 ◽

Cited By ~ 2

Author(s):

Tunc Icoz ◽

Mehmet Arik ◽

John T. Dardis

Keyword(s):

Thermal Management ◽

Heat Sink ◽

High Efficiency ◽

Computational Study ◽

Heat Sinks ◽

Advanced Materials ◽

Air Cooling ◽

Thermal Management Of Electronics ◽

Thermal Solution

Thermal management of electronics is a critical part of maintaining high efficiency and reliability. Adequate cooling must be balanced with weight and volumetric requirements, especially for passive air-cooling solutions in electronics applications where space and weight are at a premium. It should be noted that there are systems where thermal solution takes more than 95% of the total weight of the system. Therefore, it is necessary to investigate and utilize advanced materials to design low weight and compact systems. Many of the advanced materials have anisotropic thermal properties and their performances depend strongly on taking advantage of superior properties in the desired directions. Therefore, control of thermal conductivity plays an important role in utilization of such materials for cooling applications. Because of the complexity introduced by anisotropic properties, thermal performances of advanced materials are yet to be fully understood. Present study is an experimental and computational study on characterization of thermal performances of advanced materials for heat sink applications. Numerical simulations and experiments are performed to characterize thermal performances of four different materials. An estimated weight savings in excess of 75% with lightweight materials are observed compared to the traditionally used heat sinks.

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Thermal characterization of a multi-heat source component with and without an external heat sink

20th International Workshop on Thermal Investigations of ICs and Systems ◽

10.1109/therminic.2014.6972492 ◽

2014 ◽

Author(s):

Wendy Luiten

Keyword(s):

Heat Source ◽

Heat Sink ◽

Thermal Characterization ◽

External Heat ◽

Source Component

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On the Thermal Characterization of Fibers Prepared by Cryogenic Grinding of Scrap Tires

Materials Science Forum ◽

10.4028/www.scientific.net/msf.636-637.1421 ◽

2010 ◽

Vol 636-637 ◽

pp. 1421-1427

Author(s):

F. Parrés ◽

J.E. Crespo ◽

A. Nadal ◽

A. Macias-Garcia ◽

E.M. Cuerda-Correa

Keyword(s):

Thermal Characterization ◽

Thermal Transitions ◽

Recycling Process ◽

Pyrolysis Gas ◽

Scrap Tires ◽

Analysis Techniques ◽

Reinforcing Fibers ◽

Materials Used ◽

Thermal Analysis Techniques

The importance of recovering and valorising the residues generated by industrialized societies is mainly due to the environmental impact that such residues may cause. In this connection, scrap tires constitute a major source of pollution. In the recent years large amounts of scrap tires have been recycled in order to recover the metals contained in this residue. Tires have also been grinded and the small particles produced have found different applications. In addition to metals and rubber particles, reinforcing fibers are also produced in the recycling process of scrap tires. As a previous step for the valorisation of this third constituent of waste tires, a characterization of such fibers is strongly recommended. Thermal analysis techniques make it possible to identify the fibers through the thermal transitions that may take place. Usually, such transitions result mainly in cotton and rayon. Furthermore, the combination of pyrolysis, gas chromatography and mass spectrometry techniques corroborates the identification of several compounds derived from the decomposition of the fibers as well as some materials used in the preparation of tires.

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