Active transient cooling by magnetocaloric materials

J. Y. Law; V. Franco; P. Keblinski; R. V. Ramanujan

doi:10.1016/j.applthermaleng.2012.11.001

Active transient cooling by magnetocaloric materials

J. Y. Law, V. Franco, P. Keblinski, R. V. Ramanujan^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

Abstract

The magnetocaloric effect (MCE) has been intensively studied for novel energy efficient thermal management systems. The present study demonstrates a proof-of-concept magnetic cooling setup for active cooling of the thermal spikes of a heated resistor. Using Gd as the MCE material, the device was capable of actively cooling thermal spikes within one cycle since the dynamics of magnetic phase transition in Gd (a second-order magnetic phase transition material) are favorable to effect a fast MCE response. Enhanced cooling rate of the heated resistor of up to ∼85% for active cooling by MCE compared to passive cooling was achieved. The cooling curve of the resistor was found to follow an exponential decrease. Our results show that magnetic cooling systems can be an efficient solution to cool thermal spikes in active transient cooling systems.

Original language	English
Pages (from-to)	17-23
Number of pages	7
Journal	Applied Thermal Engineering
Volume	52
Issue number	1
DOIs	https://doi.org/10.1016/j.applthermaleng.2012.11.001
Publication status	Published - 2013
Externally published	Yes

ASJC Scopus Subject Areas

Energy Engineering and Power Technology
Mechanical Engineering
Fluid Flow and Transfer Processes
Industrial and Manufacturing Engineering

Keywords

Active cooling
Magnetocaloric materials
Thermal management

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10.1016/j.applthermaleng.2012.11.001

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title = "Active transient cooling by magnetocaloric materials",

abstract = "The magnetocaloric effect (MCE) has been intensively studied for novel energy efficient thermal management systems. The present study demonstrates a proof-of-concept magnetic cooling setup for active cooling of the thermal spikes of a heated resistor. Using Gd as the MCE material, the device was capable of actively cooling thermal spikes within one cycle since the dynamics of magnetic phase transition in Gd (a second-order magnetic phase transition material) are favorable to effect a fast MCE response. Enhanced cooling rate of the heated resistor of up to ∼85% for active cooling by MCE compared to passive cooling was achieved. The cooling curve of the resistor was found to follow an exponential decrease. Our results show that magnetic cooling systems can be an efficient solution to cool thermal spikes in active transient cooling systems.",

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T1 - Active transient cooling by magnetocaloric materials

AU - Law, J. Y.

AU - Franco, V.

AU - Keblinski, P.

AU - Ramanujan, R. V.

PY - 2013

Y1 - 2013

N2 - The magnetocaloric effect (MCE) has been intensively studied for novel energy efficient thermal management systems. The present study demonstrates a proof-of-concept magnetic cooling setup for active cooling of the thermal spikes of a heated resistor. Using Gd as the MCE material, the device was capable of actively cooling thermal spikes within one cycle since the dynamics of magnetic phase transition in Gd (a second-order magnetic phase transition material) are favorable to effect a fast MCE response. Enhanced cooling rate of the heated resistor of up to ∼85% for active cooling by MCE compared to passive cooling was achieved. The cooling curve of the resistor was found to follow an exponential decrease. Our results show that magnetic cooling systems can be an efficient solution to cool thermal spikes in active transient cooling systems.

AB - The magnetocaloric effect (MCE) has been intensively studied for novel energy efficient thermal management systems. The present study demonstrates a proof-of-concept magnetic cooling setup for active cooling of the thermal spikes of a heated resistor. Using Gd as the MCE material, the device was capable of actively cooling thermal spikes within one cycle since the dynamics of magnetic phase transition in Gd (a second-order magnetic phase transition material) are favorable to effect a fast MCE response. Enhanced cooling rate of the heated resistor of up to ∼85% for active cooling by MCE compared to passive cooling was achieved. The cooling curve of the resistor was found to follow an exponential decrease. Our results show that magnetic cooling systems can be an efficient solution to cool thermal spikes in active transient cooling systems.

KW - Active cooling

KW - Magnetocaloric materials

KW - Thermal management

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Active transient cooling by magnetocaloric materials

Abstract

ASJC Scopus Subject Areas

Keywords

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