Abstract
The Carnot type magnetic refrigeration in the temperature range from 4.2 K to 15 K has been studied. This paper describes the additional experimental results to improve the liquefaction efficiency. The liquefaction losses in the demagnetization process largely depend on the gap width of the heat pipe-GGG system. At each initial temperature, there was an optimum gap width and magnetic field sweep rate. The maximum liquefaction efficiency was obtained for the gap width of 400 to 600 µm at 4.2 K.
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References
H. Nakagome, N. Tanji, O. Horigami, T. Numazawa, Y. Watanabe and T. Hashimoto, The helium magnetic refrigerator I: development and experimental results, in: “Advances in Cryogenic Engineering,” Vol. 29, Plenum Press, New York (1984), p. 581.
T. Numazawa, T. Hashimoto, H. Nakagome, N. Tanji and O. Horigami, The helium magnetic refrigerator II: liquefaction process and efficiency, in: “Advances in Cryogenic Engineering,” Vol. 29, Plenum Press, New York (1984), p. 589.
T. Numazawa, H. Nakagome and T. Hashimoto, Carnot type magnetic Refrigerator operating temperature from 4 K to 20 K, Cryogenics, Vol. 26: to be published (1986).
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© 1986 Plenum Press, New York
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Numazawa, T., Hashimoto, T., Nakagome, H. (1986). Improvement of Liquefaction Efficiency of the Heat Pipe Type Magnetic Refrigerator. In: Fast, R.W. (eds) Advances in Cryogenic Engineering. Advances in Cryogenic Engineering, vol 31. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-2213-9_87
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DOI: https://doi.org/10.1007/978-1-4613-2213-9_87
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4612-9299-9
Online ISBN: 978-1-4613-2213-9
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