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Rotary magnetic chillers and their assessment.
Author(s) : KITANOVSKI A., EGOLF P. W., GONIN C.
Summary
This study is focused on the application of rotary magnetic liquid chillers and their assessment. For this purpose, a best possible design and a comprehensive analysis of the energy performance was made. The investigation was completed by an economic comparison with the existing conventional technology. Two different kind of magnetic chillers were investigated, such with permanent magnet assemblies and such that apply superconducting magnets, respectively. The results show clear limits of the size of permanent magnets of large scale magnetic chillers. Existing magnetocaloric materials do not have yet a good manufacturability. Therefore, different porous structures were considered and evaluated. The influence of such structures on the chillers characteristics is outlined. In the calculations two different working fluids were assumed, namely a 20% ethanol-water solution and a liquid metal based on the elements indium and gallium. A comparison between chillers, applying the two different fluids, was made and the difference in operation characteristics is discussed. For the magnetocaloric materials available today, the second shows a much better performance. The article has instructive sections for an optimal design of magnetic chillers. Furthermore, it shows their market potential.
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Details
- Original title: Rotary magnetic chillers and their assessment.
- Record ID : 2011-0159
- Languages: English
- Subject: Figures, economy
- Source: 4th International Conference on Magnetic Refrigeration at Room Temperature (Thermag IV). Proceedings: Baotou, China, August 23-27, 2010.
- Publication date: 2010/08/23
Links
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Indexing
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Themes:
Heat transfer;
Chillers;
Liquid secondary refrigerants;
Caloric cooling (magnetocaloric, electrocaloric, elastocaloric and barocaloric cooling);
Refrigerating equipment: economics and statistics - Keywords: Superconducting magnet; Economy; Magnetic refrigerator; Magnetocaloric cooling; Magnet; Chiller; Magnetic property; Porous medium; Energy efficiency
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- Source: 4th International Conference on Magnetic Refrigeration at Room Temperature (Thermag IV). Proceedings: Baotou, China, August 23-27, 2010.
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- Formats : PDF
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