| Titre : | Performance modeling of AMR refrigerators (2014) |
| Titre original : | Modélisation de la performance de réfrigérateurs à régénérateurs magnétiques actifs |
| Auteurs : | Thomas Burdyny, Auteur ; Alex Ruebsaat-Trott, Auteur ; Andrew Rowe, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | International journal of refrigeration (Vol. 37 N° 1, Janvier 2014) |
| Article en page(s) : | pp. 51-62 |
| Note générale : | Refrigeration |
| Langues : | Anglais |
| Tags : | AMR cycle ; thermodynamics ; magnetocaloric effect ; magnetic refrigeration |
| Résumé : | A system modeling approach for predicting the performance of active magnetic regenerators using a one-phase approximation is presented. The approach is described for an arbitrary AMR device independent of the magnetic refrigerant, thermal losses or magnetic waveform. A general expression for magnetic work is derived which can be used for cycles where the low-field intensity is not zero. Additionally, a means of treating the varying magnetic field waveform as a single high and low field is described. The model is applied to a permanent magnet magnetic refrigerator using water–glycol as the heat transfer fluid. Simulated results are compared to experimental data which vary by heat load, frequency and utilization. A sensitivity analysis is performed using utilization, adiabatic temperature change, effective conductivity and particle size as independent variables. Comparisons to experimental data show that reducing the calculated magnetocaloric effect by 25% provides good agreement between simulations and experimental results. |
| En ligne : | http://www.sciencedirect.com/science/article/pii/S0140700713002119 |
