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A magnetic wine cooler prototype
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DOI：10.1016/j.ijrefrig.2020.11.015.png)
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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 degrees C inside the retrofitted wine cooler cabinet by generating 27.9 W of cooling capacity for an ambient temperature of 25 degrees 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 degrees C, the coefficient of performance and second-law efficiency achieved by the magnetic system were 0.38 and 1.6%. (C) 2020 Elsevier Ltd and IIR. All rights reserved.
Keyword:
Magnetic refrigeration
Active magnetic regeneration
System design
System optimization
Performance evaluation
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3.8
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2.8K
被引数:
1.8W
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Performance assessment of different porous matrix geometries for active magnetic regenerators.png)
APPLIED ENERGY
APPLIED ENERGYIF11
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