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Experimental analysis of regularly structured composite latent heat storages for temporary cooling of electronic components

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Abstract

This study presents the experimental investigation of regularly structured Composite Latent Heat Storages. Solid–liquid Phase Change Materials have a low thermal conductivity, resulting in high temperature differences. This drawback is compensated by the combination with specially designed frame-structures made of aluminum to enhance the transport of thermal energy. A prototype is investigated experimentally on a test rig, where the heat load and temperatures are measured while the phase change process is observed optically, and compared to a solid block Phase Change Material.

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Abbreviations

CLHS:

Composite latent heat storage

PCM:

Phase change material

SLS:

Selective laser sintering

TIM:

Thermal interface material

c :

Specific heat capacity [J/(kg K)]

\(\Updelta h_{f}\) :

Latent heat of fusion [(J/kg)]

I :

Electric current (A)

k :

Thermal conductivity [W/(m K)]

\(\dot{q}\) :

Heat flux(W/m²)

\(\dot{Q}\) :

Heat load (W)

t :

Time (s)

T :

Temperature (K, °C)

α :

Thermal diffusivity (m²/s)

ρ :

Density (kg/m³)

F:

Fusion

High:

High heat load

Low:

Low heat load

Max:

Maximum

Mid:

Medium heat load

V:

With respect to volume

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Acknowledgments

This work is being conducted in the frame of a project funded by the Federal Ministry of Economics and Technology (https://doi.org/www.bmwi.de), cf. project funding reference number 20Y0803A.

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Authors and Affiliations

  1. Institute of Thermo-Fluid Dynamics, Applied Thermodynamics, Hamburg University of Technology, Denickestr. 15, 21073, Hamburg, Germany

    Ekkehard Lohse & Gerhard Schmitz

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  1. Ekkehard Lohse
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  2. Gerhard Schmitz
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Correspondence to Ekkehard Lohse.

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Lohse, E., Schmitz, G. Experimental analysis of regularly structured composite latent heat storages for temporary cooling of electronic components. Heat Mass Transfer 49, 1565–1575 (2013). https://doi.org/10.1007/s00231-013-1195-y

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  • DOI: https://doi.org/10.1007/s00231-013-1195-y

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