Experimental Investigation of the thermophysical properties of a phase change dispersion for cooling purposes

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Experimental Investigation of the thermophysical properties of a phase change dispersion for cooling purposes. / Fischer, Ludger; Mura, Ernesto; O'Neill, Poppy; Von Arx, Silvan; Worlitschek, Jörg; Qiao, Geng; Li, Qi; Ding, Yulong; Lei, Xianzhang.

In: International Journal of Refrigeration, 22.05.2020.

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Fischer, Ludger ; Mura, Ernesto ; O'Neill, Poppy ; Von Arx, Silvan ; Worlitschek, Jörg ; Qiao, Geng ; Li, Qi ; Ding, Yulong ; Lei, Xianzhang. / Experimental Investigation of the thermophysical properties of a phase change dispersion for cooling purposes. In: International Journal of Refrigeration. 2020.

Bibtex

@article{2c8117d1b87140cdbf39d9f671845806,
title = "Experimental Investigation of the thermophysical properties of a phase change dispersion for cooling purposes",
abstract = "Phase change dispersions have recently gained interest in isothermal cooling applications. So far, almost all of the investigated phase change dispersions consist of paraffins as the phase change materials. Pure paraffins are expensive and suffer from lower latent heats at higher temperatures (50-60°C). This paper presents a phase change dispersion with two fatty-acid esters as the phase change material, Crodatherm-53/Crodatherm-47 (50:50). The dispersion has a melting temperature of 50°C and is foreseen in high-voltage direct current component cooling. The phase change dispersion was stabilised with emulsifiers to prevent phase separation and nucleation agents were added to supress supercooling. From thermal history calculations, the supercooling of the dispersion was reduced by 10 K with the addition of the nucleation agent. A monomodal particle size distribution was achieved. The viscosity of the dispersion at different temperatures and mass fractions of phase change material was also assessed. From DSC analysis, an apparent specific heat capacity of 8.5 kJ kg−1 was measured for the phase change dispersion. This value is double the apparent specific heat capacity of water within the desired melting range (47.5-50.0°C). This paper presents further experimental data, formulation details and thermophysical and rheological properties of fatty acid esters as phase change materials in phase change dispersions.",
keywords = "Phase change material (PCM), Phase change dispersion (PCD), Heat transfer, Thermophysical properties",
author = "Ludger Fischer and Ernesto Mura and Poppy O'Neill and {Von Arx}, Silvan and J{\"o}rg Worlitschek and Geng Qiao and Qi Li and Yulong Ding and Xianzhang Lei",
year = "2020",
month = may,
day = "22",
doi = "10.1016/j.ijrefrig.2020.05.013",
language = "English",
journal = "International Journal of Refrigeration",
issn = "0140-7007",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Experimental Investigation of the thermophysical properties of a phase change dispersion for cooling purposes

AU - Fischer, Ludger

AU - Mura, Ernesto

AU - O'Neill, Poppy

AU - Von Arx, Silvan

AU - Worlitschek, Jörg

AU - Qiao, Geng

AU - Li, Qi

AU - Ding, Yulong

AU - Lei, Xianzhang

PY - 2020/5/22

Y1 - 2020/5/22

N2 - Phase change dispersions have recently gained interest in isothermal cooling applications. So far, almost all of the investigated phase change dispersions consist of paraffins as the phase change materials. Pure paraffins are expensive and suffer from lower latent heats at higher temperatures (50-60°C). This paper presents a phase change dispersion with two fatty-acid esters as the phase change material, Crodatherm-53/Crodatherm-47 (50:50). The dispersion has a melting temperature of 50°C and is foreseen in high-voltage direct current component cooling. The phase change dispersion was stabilised with emulsifiers to prevent phase separation and nucleation agents were added to supress supercooling. From thermal history calculations, the supercooling of the dispersion was reduced by 10 K with the addition of the nucleation agent. A monomodal particle size distribution was achieved. The viscosity of the dispersion at different temperatures and mass fractions of phase change material was also assessed. From DSC analysis, an apparent specific heat capacity of 8.5 kJ kg−1 was measured for the phase change dispersion. This value is double the apparent specific heat capacity of water within the desired melting range (47.5-50.0°C). This paper presents further experimental data, formulation details and thermophysical and rheological properties of fatty acid esters as phase change materials in phase change dispersions.

AB - Phase change dispersions have recently gained interest in isothermal cooling applications. So far, almost all of the investigated phase change dispersions consist of paraffins as the phase change materials. Pure paraffins are expensive and suffer from lower latent heats at higher temperatures (50-60°C). This paper presents a phase change dispersion with two fatty-acid esters as the phase change material, Crodatherm-53/Crodatherm-47 (50:50). The dispersion has a melting temperature of 50°C and is foreseen in high-voltage direct current component cooling. The phase change dispersion was stabilised with emulsifiers to prevent phase separation and nucleation agents were added to supress supercooling. From thermal history calculations, the supercooling of the dispersion was reduced by 10 K with the addition of the nucleation agent. A monomodal particle size distribution was achieved. The viscosity of the dispersion at different temperatures and mass fractions of phase change material was also assessed. From DSC analysis, an apparent specific heat capacity of 8.5 kJ kg−1 was measured for the phase change dispersion. This value is double the apparent specific heat capacity of water within the desired melting range (47.5-50.0°C). This paper presents further experimental data, formulation details and thermophysical and rheological properties of fatty acid esters as phase change materials in phase change dispersions.

KW - Phase change material (PCM)

KW - Phase change dispersion (PCD)

KW - Heat transfer

KW - Thermophysical properties

U2 - 10.1016/j.ijrefrig.2020.05.013

DO - 10.1016/j.ijrefrig.2020.05.013

M3 - Article

JO - International Journal of Refrigeration

JF - International Journal of Refrigeration

SN - 0140-7007

ER -