Journal of Radio Electronics. eISSN 1684-1719. 2024. ¹4
Full text in Russian (pdf)
DOI: https://doi.org/10.30898/1684-1719.2024.4.10
OF CRYOGENIC MAGNETIC REFRIGERATOR
A.V. Mashirov 1, K.A. Kolesov 1, I.I. Musabirov 2,
D.D. Kuznetsov 1, V.V. Koledov 1, V.G. Shavrov 1
1 Kotelnikov IRE RAS, 125009, Mokhovaya str., 11, b. 7
2 IMSP RAS, 450001, Ufa, Stepana Khalturina str., 39
The paper was received April 15, 2024.
Abstract. This work study the operating parameters of a cryogenic mechanical thermal switch, a detachable contact pair made of a alloy GdNi2 disk and a copper cylinder. The mechanical thermal switch operates in a vacuum in the temperature range of 8-325 K with a pressure of 250-350 kPa. The time of thermal equilibrium is studied at different contact areas with and without an indium thermal interface at an initial temperature difference of 0.8-10 K in the contact pair in the temperature range from 8 to 122 K. The temperature relaxation value is 33.7...39.9 seconds at a temperature difference of 3±0.14 K in the range of 50...122 K. Reducing the nominal contact area from 177 mm2 to 2.5 mm2 increases the temperature relaxation time at a temperature of 73.3 K from 36.6 to 63.5 seconds. This temperature range corresponds to the maximum magnetocaloric effect near the Curie temperature of the GdNi2 alloy. The values of the heat that must be removed to maintain the required temperature of the cooling object in a cryogenic magnetic refrigerator have been obtained.
Key words: magnetocaloric effect, magnetic cooling.
Financing: The study was supported by a grant from the Russian Science Foundation, project No. 20-79-10197, https://rscf.ru/project/20-79-10197/.
Corresponding author: Mashirov Alexey Victorovich a.v.mashirov@mail.ru
References
1. Franco V. et al. Magnetocaloric effect: From materials research to refrigeration devices //Progress in Materials Science. – 2018. – Ò. 93. – Ñ. 112–232.
2. Kitanovski A. et al. The thermodynamics of magnetocaloric energy conversion //Magnetocaloric Energy Conversion: From Theory to Applications. – 2015. – Ñ. 1–21.
3. Kitanovski A. Energy applications of magnetocaloric materials //Advanced Energy Materials. – 2020. – Ò. 10. – ¹. 10. – Ñ. 1903741.
4. Liu W. et al. A study on rare–earth Laves phases for magnetocaloric liquefaction of hydrogen //Applied Materials Today. – 2022. – Ò. 29. – Ñ. 101624.
5. Liu W. et al. Designing magnetocaloric materials for hydrogen liquefaction with light rare–earth Laves phases //Journal of Physics: Energy. – 2023. – Ò. 5. – ¹. 3. – Ñ. 034001.
6. Park J., Jeong S., Kim S. AC Operation of Gd–Ba–Cu–O High TC Superconducting Magnet for Magnetic Refrigeration //IEEE transactions on applied superconductivity. – 2013. – Ò. 24. – ¹. 3. – Ñ. 1–4.
7. Park J., Park I., Jeong S., Kim S. Experimental Investigation on Conduction–Cooled Fast–Ramping Layer–Wound (RE)BCO Superconducting Magnet for Magnetic Refrigeration //IEEE transactions on applied superconductivity. – 2015. – Ò. 25. – ¹. 3. – Ñ. 1–5.
8. Park J., Jeong S., Park I. Development and parametric study of the convection–type stationary adiabatic demagnetization refrigerator (ADR) for hydrogen re–condensation //Cryogenics. – 2015. – Ò. 71. – Ñ. 82–89.
9. Park I. et al. Ramping operation of the conduction–cooled high–temperature superconducting magnet for an active magnetic regenerator system //IEEE Transactions on applied superconductivity. – 2016. – Ò. 26. – ¹. 4. – Ñ. 1–5.
10. Park I. et al. Performance of the fast–ramping high temperature superconducting magnet system for an active magnetic regenerator //IEEE Transactions on Applied Superconductivity. – 2017. – Ò. 27. – ¹. 4. – Ñ. 1–5.
11. Park I., Jeong S. Development of the active magnetic regenerative refrigerator operating between 77 K and 20 K with the conduction cooled high temperature superconducting magnet //Cryogenics. – 2017. – Ò. 88. – Ñ. 106–115.
12. Park I. et al. Design method of the layered active magnetic regenerator (AMR) for hydrogen liquefaction by numerical simulation //Cryogenics. – 2015. – Ò. 70. – Ñ. 57–64.
13. Kim Y., Park I., Jeong S. Experimental investigation of two–stage active magnetic regenerative refrigerator operating between 77 K and 20 K //Cryogenics. – 2013. – Ò. 57. – Ñ. 113–121.
14. Park I. et al. Performance analysis of the active magnetic regenerative refrigerator for 20 K. // Proceedings of the 19th International Cryocooler Conference. – June 20–23. – 2016. – C. 495.
15. Kamiya K. et al. Active magnetic regenerative refrigeration using superconducting solenoid for hydrogen liquefaction //Applied Physics Express. – 2022. – Ò. 15. – ¹. 5. – Ñ. 053001.
16. Numazawa T. et al. Magnetic refrigerator for hydrogen liquefaction //Cryogenics. – 2014. – Ò. 62. – Ñ. 185–192.
17. Klinar K. et al. Fluidic and mechanical thermal control devices //Advanced electronic materials. – 2021. – Ò. 7. – ¹. 3. – Ñ. 2000623.
18. Anikin M. et al. Magnetic and magnetocaloric properties of Gd(Ni1− xFex)2 quasi–binary Laves phases with x= 0.04÷ 0.16 //Journal of Magnetism and Magnetic Materials. – 2018. – Ò. 449. – Ñ. 353–359.
19. Mashirov A. V. et al. Homogenization annealing and magnetic properties of a sample of the Laves phase GdNi _2 //Fizika Tverdogo Tela. – 2021. – Ò. 63. – ¹. 12. – Ñ. 1994–1999.
20. Dhuley R. C. Pressed copper and gold–plated copper contacts at low temperatures–A review of thermal contact resistance //Cryogenics. – 2019. – Ò. 101. – Ñ. 111–124.
21. Baranov N. V. et al. Enhanced magnetic entropy in GdNi2 //Physical Review B. – 2007. – Ò. 75. – ¹. 9. – Ñ. 092402.
22. Stevens R., Boerio–Goates J. Heat capacity of copper on the ITS–90 temperature scale using adiabatic calorimetry //The Journal of Chemical Thermodynamics. – 2004. – Ò. 36. – ¹. 10. – Ñ. 857–863.
23. Kolesov K. . et al. Parameters of the Cryogenic Mechanical Thermal Switch with Temperature Range 15–120 K for Magnetic Refrigerators // Unpublished results. – 2024.
24. Taskaev S. et al. Magnetocaloric effect in GdNi2 for cryogenic gas liquefaction studied in magnetic fields up to 50 T //Journal of applied physics. – 2020. – Ò. 127. – ¹. 23.
25. Cryomech. (19.04.2023 ã.). Cryomech. Ïîëó÷åíî èç Cryomech: https://www.cryomech.com/cryocoolers/gifford–mcmahon–cryocoolers/
26. Marland B., Bugby D., Stouffer C. Development and testing of advanced cryogenic thermal switch concepts //AIP Conference Proceedings. – AIP Publishing, 2000. – Ò. 504. – ¹. 1. – Ñ. 837–846.
27. Dermenakis S. Thermal characterization of a gas–gap heat switch for satellite thermal control // Master Thesis, Delft University of Technology. – 2016.
28. Jahromi A. E., Sullivan D. F. A piezoelectric cryogenic heat switch //Review of Scientific Instruments. – 2014. – Ò. 85. – ¹. 6.
For citation:
Mashirov A.V., Kolesov K.A., Musabirov I.I., Kuznetsov D.D., Shavrov V.G. Mechanical heat switch for cryogenic magnetic refrigerator. // Journal of Radio Electronics. – 2024. – ¹. 4. https://doi.org/10.30898/1684-1719.2024.4.10 (In Russian)