Performance characteristics of an irreversible magnetic Brayton refrigeration cycle |
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Authors: | Ji-Zhou He Xin Wu Xin-Fa Deng |
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Affiliation: | aDepartment of Physics, Nanchang University, Nanchang 330047, PR China |
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Abstract: | Based on the thermodynamic properties of a paramagnetic salt, an irreversible model of the magnetic Brayton refrigeration cycle is established, in which the working substance is a special paramagnetic material. The expressions of the important performance parameters, such as the coefficient of performance, refrigeration load and work input, are derived. Moreover, the optimal performance parameters are obtained at the maximum coefficient of performance. The results obtained here may include the ones of the magnetic Brayton refrigeration cycle using the magnetic material obeyed the Curie law as the working substance, the magnetic Brayton refrigeration cycle without regeneration and the eversible magnetic Brayton refrigeration cycle. Therefore, the results obtained here have general significance and will be helpful to deeply understand the performance of a magnetic Brayton refrigeration cycle. |
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Keywords: | Magnetic refrigerator Thermodynamic cycle Brayton Modelling Calculation PerformanceMots clé s: Ré frigé rateur magné tique Cycle thermodynamique Brayton Modé lisation Calcul Performance |
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