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A magnetic wine cooler prototype.
Author(s) : NAKASHIMA A. T., FORTKAMP F. P., SA de N. M., DOS SANTOS V. M. A., HOFFMANN G., PEIXER G. F., DUTRA S. L., RIBEIRO M. C., LOZANO J. A., BARBOSA J. R.
Type of article: IJR article
Summary
This work presents the design and performance evaluation of a novel magnetic refrigeration unit capable of controlling the temperature of a 31-bottle wine cooler cabinet. The main components of the system are: an active magnetic regenerator composed of eight porous beds of Gd/Gd-Y spheres, a two-pole magnetic circuit responsible for the magnetic field changes, a set of solenoid valves for flow control, and fan-supplied finned tube heat exchangers on the cold and hot sides of the wine cooler apparatus. Synchronization of the magnetic field variation and fluid flow processes was performed using real-time magnetic field measurements. The system was capable of reaching a mean temperature of 10.8 C inside the retrofitted wine cooler cabinet by generating 27.9 W of cooling capacity for an ambient temperature of 25 C. The coefficient of performance and second-law efficiency for this operating point were estimated as 0.21 and 1.0%, respectively. When operating at a cabinet temperature of 12.5 C, the coefficient of performance and second-law efficiency achieved by the magnetic system were 0.38 and 1.6%.
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Details
- Original title: A magnetic wine cooler prototype.
- Record ID : 30028111
- Languages: English
- Subject: Technology
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 122
- Publication date: 2021/02
- DOI: http://dx.doi.org/10.1016/j.ijrefrig.2020.11.015
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