Fluid choice and test standardization for magnetic regenerators operating at near room temperature |
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| Affiliation: | 1. School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510641, PR China;2. Gree Electric Appliances Inc. of Zhuhai, Zhuhai 519070, PR China;3. School of Materials Science and Engineering, Sichuan University, Chengdu 610065, PR China;1. Center for Functionalized Magnetic Materials (FunMagMa), Immanuel Kant Baltic Federal University, 236041, Kaliningrad, Russian Federation;2. Frontier Research Institute for Interdisciplinary Sciences (FRIS), Tohoku University, Sendai, 980-8578, Japan;3. Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai, 980-8577, Japan;4. Kotelnikov Institute of Radio-engineering and Electronics of RAS, Moscow, 125009, Russian Federation;5. National University of Science and Technology MISiS, Moscow, 119049, Russian Federation;6. National Research South Ural State University, Chelyabinsk, 454080, Russian Federation;1. Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), School of Material Science and Engineering, Northeastern University, Shenyang 110819, China;2. División Multidisciplinaria, Ciudad Universitaria, Universidad Autónoma de Ciudad Juárez (UACJ), calle José de Jesús Macías Delgado # 18100, Ciudad Juarez, Chihuahua, Mexico;3. Laboratoire d''Étude des Microstructures et de Mécanique des Matériaux (LEM3), CNRS UMR 7239, Université de Lorraine, 57045 Metz, France;4. Laboratory of Excellence on Design of Alloy Metals for Low-mAss Structures (DAMAS), Université de Lorraine, 57045 Metz, France;6. Northeastern Institute of Metal Materials Co., Ltd, Shenyang 110108, China;1. College of Materials Science and Engineering, Sichuan University, Chengdu 610065, PR China;2. College of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, PR China;3. School of Engineering and Materials Science, Queen Mary, University of London, London E1 4NS, UK;1. Aalto University, School of Chemical Technology, Department of Materials Science and Engineering, P.O. Box 16200, FI-00076, Aalto, Finland;2. Helmholtz Centre Berlin, Institute for Complex Magnetic Materials, Hahn-Meitner Platz 1, D-14109, Berlin, Germany;3. Aalto University, School of Chemical Technology, Department of Biotechnology and Chemical Technology, P.O. Box 16100, FI-00076, Aalto, Finland;4. Japan Patent Office, Policy Planning and Coordination Department, Policy Planning and Research Division, 3-4-3 Kasumigaseki, Chiyoda-ku, Tokyo, 100-8915 Japan |
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| Abstract: | Numerical simulations are performed to investigate the performance of an active magnetic regenerator (AMR) operating near room temperature. A two-dimensional porous model is established to analyze the impact different heat transfer fluids (HTFs) have on the performance of the AMR. The internal temperature distribution and cooling capacity of the system are analyzed and the influence of the HTF discussed. The simulation results show that when mercury is substituted in place of water as the HTF, the cooling capacity can be enhanced by nearly 600%. A fluid with high conductivity, high density, and low specific heat is most suitable for use as the HTF. Furthermore, as the environmental conditions have a great impact upon the performance of the AMR, three feasible methods of standardization testing are proposed. These involve: the evaluation index under fixed test environment conditions, a maximum exergy method, and a maximum specific exergy method around the Curie temperature. |
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| Keywords: | Magnetic refrigeration Simulation Regenerator Optimization Performance Froid magnétique Simulation Régénérateurs Optimisation Performance |
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