The performance of a large-scale rotary magnetic refrigerator

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The performance of a large-scale rotary magnetic refrigerator

Jacobs, S. / Auringer, J. / Boeder, A. / Chell, J. / Komorowski, L. / Leonard, J. / Russek, S. / Zimm, C.

Astronautics has completed construction of a new, large-scale rotary magnetic refrigerator, which was designed to provide 2 kW of cooling power over a temperature span of 12 °C with Coefficient of Performance (COP) > 2. The system uses a NdFeB magnet assembly with a peak field of 1.44 Tesla which rotates over twelve fixed beds arranged circumferentially. Each bed was packed with six layers of LaFeSiH of different Curie temperatures, chosen to optimize system performance over the desired span. In this paper, we report on the performance of this system at flow rates of 12.5 and 15.5 lit/min. At the larger flow rate, the system produced 2049 W of cooling power at zero span and peak performance of 1704 W over a span of 11.1 °C with COP = 2.24. To our knowledge, this represents the largest cooling power yet observed for a room-temperature, permanent magnet system. We show that the measured performance is in excellent agreement with theoretical prediction.

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Dokumentinformationen

Titel :

The performance of a large-scale rotary magnetic refrigerator

Beteiligte:

Jacobs, S. (Autor:in) / Auringer, J. (Autor:in) / Boeder, A. (Autor:in) / Chell, J. (Autor:in) / Komorowski, L. (Autor:in) / Leonard, J. (Autor:in) / Russek, S. (Autor:in) / Zimm, C. (Autor:in)

Erschienen in:

THERMAG, International Conference on Magnetic Refrigeration at Room Temperature, 5, Conference Internationale sur le Froid Magnetique a Temperature Ambiante, 5 ; 421-428

Science et Technique du Froid. Comptes Rendus/Refrigeration Science and Technology. Proceedings ; 5

Erscheinungsdatum :

2012

Format / Umfang :

8 Seiten, 11 Bilder, 1 Tabelle, 12 Quellen

ISBN :

978-2-913149-94-6

ISSN :

0151-1637

Medientyp :