A magnetic cooling machine for domestic application

Sari, Osmann (School of Management and Engineering Vaud, HES-SO // University of Applied Sciences Western Switzerland) ; Balli, Mohamed (School of Management and Engineering Vaud, HES-SO // University of Applied Sciences Western Switzerland) ; Mahmed, Cyril (School of Management and Engineering Vaud, HES-SO // University of Applied Sciences Western Switzerland) ; Besson, Christophe (School of Management and Engineering Vaud, HES-SO // University of Applied Sciences Western Switzerland) ; Bonhote, Philippe (School of Management and Engineering Vaud, HES-SO // University of Applied Sciences Western Switzerland) ; Forchelet, Thierry (School of Management and Engineering Vaud, HES-SO // University of Applied Sciences Western Switzerland)

In this paper, a new type of reciprocating magnetic refrigerator working with high remanence permanent magnets as the source of the magnetic field is presented. The simulated and measured magnetic field at the machine air gap is about 1.45 Tesla. Initially, gadolinium metal (Gd) was used as the magnetocaloric refrigerant. Its magnetocaloric performances and its quality were checked experimentally in a developed test bench and confirmed by theoretical calculations based on the mean field theory (MFT). To attain high values of temperature difference between the hot and the cold sources (temperature span), a new kind of the active magnetic refrigeration (AMR) cycle was implemented. However, in order to reduce the energy consumption and then increase the thermondynamic performances of the magnetic system, a special configuration of the magnetocaloric materials is developed. The numerical results of the applied magnetic forces on the new configuration are given and analyzed in details. The developed machine is designed to produce a cooling power between 80 and 100 Watt with a temperature span larger than 20°C. The obtained results demonstrate that magnetic cooling is a promising alternative to replace traditional systems.


Keywords:
Conference Type:
full paper
Faculty:
Ingénierie et Architecture
School:
HEIG-VD
Institute:
COMATEC - Institut de Conception, Matériaux, Emballage & Conditionnement
IESE - Institut d'Energie et Systèmes Electriques
IGT - Institut de Génie Thermique
Publisher:
Lausanne, Switzerland, 14-17 June 2010
Date:
2010-06
Lausanne, Switzerland
14-17 June 2010
Pagination:
pp. 3-115-3-121
Published in:
Proceedings of the 23rd International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ecos 2010), 14-17 June 2010, Lausanne, Switzerland
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 Record created 2020-10-20, last modified 2020-10-27

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