Quantification of the effect of hysteresis on the adiabatic temperature change in magnetocaloric materials

Lars von Moos; Christian R.H. Bahl; Kaspar Kirstein Nielsen; Kurt Engelbrecht

Quantification of the effect of hysteresis on the adiabatic temperature change in magnetocaloric materials

Lars von Moos, Christian R.H. Bahl, Kaspar Kirstein Nielsen, Kurt Engelbrecht

Department of Energy Conversion and Storage

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

195 Downloads (Pure)

Abstract

We quantify the effect of hysteresis on the performance of the magnetocaloric first order material Gd5Si2Ge2 undergoing an ideal active magnetic regenerator (AMR) cycle. The material is carefully characterized through magnetometry (VSM) and calorimetry (DSC) in order to enable an accurate model description of the phase transition at varying magnetic fields and temperatures. Using detailed experimental property data, a Preisach type model is used to describe the thermal hysteresis effects and simulate the material under realistic working conditions. We find that the adiabatic temperature change is limited by a significant fraction of the thermal hysteresis.

Original language	English
Title of host publication	Proceedings of the 6th IIF-IIR international Conference on Magnetic Refrigeration
Number of pages	2
Publisher	International Institute of Refrigeration
Publication date	2014
Publication status	Published - 2014
Event	6th IIR/IIF International Conference on Magnetic Refrigeration - Fairmont Empress Conference Center, Victoria, Canada Duration: 7 Sept 2014 → 10 Sept 2014 http://www.iesvic.uvic.ca/events/ThermagVI/

Conference

Conference	6th IIR/IIF International Conference on Magnetic Refrigeration
Location	Fairmont Empress Conference Center
Country/Territory	Canada
City	Victoria
Period	07/09/2014 → 10/09/2014
Internet address	http://www.iesvic.uvic.ca/events/ThermagVI/

Access to Document

Quantification of the effect

OpenUrl availability

Full text

Cite this

@inproceedings{e2986dfaa9774d97b264d488573ce06b,

title = "Quantification of the effect of hysteresis on the adiabatic temperature change in magnetocaloric materials",

abstract = "We quantify the effect of hysteresis on the performance of the magnetocaloric first order material Gd5Si2Ge2 undergoing an ideal active magnetic regenerator (AMR) cycle. The material is carefully characterized through magnetometry (VSM) and calorimetry (DSC) in order to enable an accurate model description of the phase transition at varying magnetic fields and temperatures. Using detailed experimental property data, a Preisach type model is used to describe the thermal hysteresis effects and simulate the material under realistic working conditions. We find that the adiabatic temperature change is limited by a significant fraction of the thermal hysteresis.",

author = "{von Moos}, Lars and Bahl, {Christian R.H.} and Nielsen, {Kaspar Kirstein} and Kurt Engelbrecht",

year = "2014",

language = "English",

booktitle = "Proceedings of the 6th IIF-IIR international Conference on Magnetic Refrigeration",

publisher = "International Institute of Refrigeration",

note = "6th IIR/IIF International Conference on Magnetic Refrigeration, Thermag VI ; Conference date: 07-09-2014 Through 10-09-2014",

url = "http://www.iesvic.uvic.ca/events/ThermagVI/",

}

von Moos, L, Bahl, CRH, Nielsen, KK & Engelbrecht, K 2014, Quantification of the effect of hysteresis on the adiabatic temperature change in magnetocaloric materials. in Proceedings of the 6th IIF-IIR international Conference on Magnetic Refrigeration. International Institute of Refrigeration, 6th IIR/IIF International Conference on Magnetic Refrigeration, Victoria, Canada, 07/09/2014.

Quantification of the effect of hysteresis on the adiabatic temperature change in magnetocaloric materials. / von Moos, Lars; Bahl, Christian R.H.; Nielsen, Kaspar Kirstein et al.
Proceedings of the 6th IIF-IIR international Conference on Magnetic Refrigeration. International Institute of Refrigeration, 2014.

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

TY - GEN

T1 - Quantification of the effect of hysteresis on the adiabatic temperature change in magnetocaloric materials

AU - von Moos, Lars

AU - Bahl, Christian R.H.

AU - Nielsen, Kaspar Kirstein

AU - Engelbrecht, Kurt

PY - 2014

Y1 - 2014

N2 - We quantify the effect of hysteresis on the performance of the magnetocaloric first order material Gd5Si2Ge2 undergoing an ideal active magnetic regenerator (AMR) cycle. The material is carefully characterized through magnetometry (VSM) and calorimetry (DSC) in order to enable an accurate model description of the phase transition at varying magnetic fields and temperatures. Using detailed experimental property data, a Preisach type model is used to describe the thermal hysteresis effects and simulate the material under realistic working conditions. We find that the adiabatic temperature change is limited by a significant fraction of the thermal hysteresis.

AB - We quantify the effect of hysteresis on the performance of the magnetocaloric first order material Gd5Si2Ge2 undergoing an ideal active magnetic regenerator (AMR) cycle. The material is carefully characterized through magnetometry (VSM) and calorimetry (DSC) in order to enable an accurate model description of the phase transition at varying magnetic fields and temperatures. Using detailed experimental property data, a Preisach type model is used to describe the thermal hysteresis effects and simulate the material under realistic working conditions. We find that the adiabatic temperature change is limited by a significant fraction of the thermal hysteresis.

M3 - Article in proceedings

BT - Proceedings of the 6th IIF-IIR international Conference on Magnetic Refrigeration

PB - International Institute of Refrigeration

T2 - 6th IIR/IIF International Conference on Magnetic Refrigeration

Y2 - 7 September 2014 through 10 September 2014

ER -

Quantification of the effect of hysteresis on the adiabatic temperature change in magnetocaloric materials

Abstract

Conference

Access to Document

OpenUrl availability

Fingerprint

Cite this