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Thermodynamic parameters of a magnetic refrigerator with a Carnot cycle.
Number: pap. 0014
Author(s) : MASHIROV A. V., KOLEDOV V. V., KAMANTSEV A. P., et al.
Summary
Theoretical modeling of thermodynamic and technical parameters of a cryogenic single-stage magnetic refrigerator operating at a temperature of about 25 K and in a magnetic field up to 10 T was carried out in the present work. As a working body, the alloy DyNi2 is used. Modeling of heat transfer processes with a single cooling cycle was carried out. The calculation showed that for a given design configuration, the average heat transfer time is not more than 1-2 seconds, then the entire time of a single cooling cycle is no more than 2-4 seconds. This allows one to estimate the specific power and the achieved temperature difference of a singlestage refrigerator with a Carnot cycle. An estimate for the coefficient of performance (COP) of the cooling process shows advantages over traditional refrigerators based on gaseous working bodies.
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Details
- Original title: Thermodynamic parameters of a magnetic refrigerator with a Carnot cycle.
- Record ID : 30025015
- Languages: English
- Source: 8th International Conference on Caloric Cooling (Thermag VIII). Proceedings: Darmstadt, Germany, September 16-20, 2018.
- Publication date: 2018/09/16
- DOI: http://dx.doi.org/10.18462/iir.thermag.2018.0014
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Indexing
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Themes:
Small-scale cryogenic applications, cryocoolers;
Caloric cooling (magnetocaloric, electrocaloric, elastocaloric and barocaloric cooling) - Keywords: Cryotemperature; Carnot; Magnetocaloric material; Magnetic refrigerator; Heat transfer; Alloy; Modelling; Nickel; Magnetocaloric effect; Dysprosium
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