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Development and Fundamental Characteristics of a Prototype Magnetocaloric Heat Pump

Published online by Cambridge University Press:  10 March 2011

Tsuyoshi Kawanami  and
Shigeki Hirano
Tsuyoshi Kawanami
Affiliation:
Dept. of Mech. Eng., Kobe University, 1-1 Rokkodai-cho, Nada-ku, Kobe 657-8501, Japan
Shigeki Hirano
Affiliation:
Hokkaido Research Organization, N19-W11, Kita-ku, Sapporo 060-0819, Japan
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Abstract

The primary objective of this study is to discuss the optimum operating conditions of magnetocaloric heat pumps according to the fundamental heat transfer characteristics of an active magnetic regenerator (AMR) bed. The AMR cycle has four sequential processes: magnetization, heat exchange fluid flow, demagnetization, and heat exchange fluid blow. The fundamental heat transfer characteristics of each process of the AMR cycle is investigated minutely. Moreover, the cooling power and the overall system performance are evaluated when the system is running continuously.

In addition to the aforementioned investigation, we have developed a prototype rotational magnetocaloric heat pump having a compact component arrangement and an uncomplicated control system. A performance evaluation has been conducted to obtain the optimum conditions for practical operation. The operation parameters such as the heat transfer fluid flow rate, rotational frequency, and initial temperature of the heat transfer fluid are examined, and the variations of the maximum temperature span between the inlet and outlet for the heat transfer fluid are discussed. As a result, the values of the optimum rotational frequency and flow rate are obtained to obtain the maximum temperature span between the inlet and outlet of the present magnetocaloric heat pump.

Keywords

magneticmagnetic propertiesGd
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1310: Symposium FF – Magnetocalorics and Magnetic Cooling , 2011 , mrsf10-1310-ff05-04
Copyright
Copyright © Materials Research Society 2011

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References

REFERENCES

1. Barclay, J. A. and Steyert, W. A., US patent 4, 332, 1359 (1981).Google Scholar
2. Sarlah, A., Kitanovski, A., Poredos, A., Egolf, P. W., Sari, O., Gendre, F., and Besson, C. A., International Journal of Refrigeration 29, 1332 (2006).10.1016/j.ijrefrig.2006.07.013Google Scholar
3. Okamura, T., Yamada, K., Hirano, N., and Nagaya, S., International Journal of Refrigeration 29, 1327 (2006).10.1016/j.ijrefrig.2006.07.020Google Scholar
4. Rowe, A., Dikeos, J., and Tura, A., Proceedings of the 1st International Conference on Magnetic Refrigeration at Room Temperature , (2005) pp. 325–334.Google Scholar
5. Tura, A. and Rowe, A., Proceedings of the 2nd International Conference on MagneticRefrigeration at Room Temperature , (2007) pp. 363–370.Google Scholar
6. Kawanami, T., Proceedings of the 2nd International Conference on Magnetic Refrigeration at Room Temperature , (2007) pp. 23–34.Google Scholar
7. Zimm, C., Auringer, J., Boeder, A., Chell, J., Russek, S., and Sternberg, A., Proceedings of the 2nd International Conference on Magnetic Refrigeration at Room Temperature , (2007) pp. 341–347.Google Scholar
8. Hirano, N., Nagaya, S., Okamura, T., Kawanami, T., and Wada, H., Proceedings of the 2nd International Conference on Magnetic Refrigeration at Room Temperature , (2007) pp. 281–287.Google Scholar