Abstract
A two-stage 4K Gifford-McMahon (G-M) cycle cryocooler with magnetic regenerator material which has cooling capacity 1.5W at 4.2K has been developed. The hybrid structural second regenerator composed of lead and ErNi0.9Co0.1 was used in the cryocooler. ErNi0.9Co0.1 has a large specific heat peak at lower temperature than 10K and lead has a larger specific heat in the. higher temperature region. The intake/exhaust valve timing was optimized to improve the cooling capacity not only of the second stage but also of the first stage. A larger size second cylinder in diameter than the former one was used to get a larger pressure-volume (PV) work.
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References
T. Kuriyama et al,High efficient two-stage GM refrigerator with magnetic material in the liquid helium temperature region,in:“Advances in Cryogenic Engineering,” vol.35B, Plenum Press, New York(1990),p. 1261.
T. Inaguchi,M. Nagao and H. Yoshimura,Two-stage Gifford-McMahon cycle cryocooler operating at about 2K,Proceedings of the Sixth International Cryocoolers Conference, vol. II:25(1990)
M. Sahashi et al.,New magnetic material R3T system with extremely large heat capacities used as heat regenerators,in:“ Advances in Cryogenic Engineering,” vol.35B,Plenum Press,New York(1990),p. 1175.
G. Ke et al.,Improvement of two-stage GM refrigerator performance using a hybrid regenerator,in: “Advances in Cryogenic Engineering,” vol.40A,Plenum Press, New York(1994),p.639.
T. Hashimoto et al.,Recent progress on rare earth magnetic regenerator material,in:“Advances in Cryogenic Engineering,” vol.37B,Plenum Press,New York(1992), p.859.
T. Hashimoto,M. Yabuki,T. Eda,T. Kuriyama and H. Nakagome,Effect of high entropy magnetic regenerator materials on power of the GM refrigerator,in:“Advances in Cryogenic Engineering,” vol.40, Plenum Press,New York(1994),p.655.
A. Onishi et al.,A 4K-GM cryocooler with hybrid regenerator of magnetic materials,Proceedings of Fourth Joint Sino-Japanese Seminar on Cryocoolers and Concerned Topics, 44(1993)
T. Kuriyama et al.,Development of 1 watt class 4K GM refrigerator with magnetic regenerator materials, in:“Advances in Cryogenic Engineering,” vol.39, Plenum Press, New York(1994),p.l335.
R. Li, A. Onishi,T. Satoh and Y. Kanazawa,The influence of valve timing and interval on performance of 4K Gifford-McMahon cycle cryocooler,presented at Cryog. Eng. Conf., (1995)
T. Kuriyama et al.,Development of a watt-class 4 K GM refrigerator using magnetic regenerator materials, Proceedings of Fourth Joint Sino-Japanese Seminar on Cryocoolers and Concerned Topics, 34(1993)
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© 1996 Plenum Press, New York
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Satoh, T., Onishi, A., Li, R., Asami, H., Kanazawa, Y. (1996). Development of 1.5W 4K G-M Cryocooler with Magnetic Regenerator Material. In: Kittel, P. (eds) Advances in Cryogenic Engineering. A Cryogenic Engineering Conference Publication, vol 41. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-0373-2_205
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DOI: https://doi.org/10.1007/978-1-4613-0373-2_205
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4613-8022-1
Online ISBN: 978-1-4613-0373-2
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