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Article

Exergy Analysis of a Parallel-Plate Active Magnetic Regenerator with Nanofluids

1
Department of Mechanical Engineering, Université de Sherbrooke, Sherbrooke, QC J1K 2R1, Canada
2
Laboratoire des Technologies de l’Énergie, Hydro-Québec, Shawinigan, QC G9N 7N5, Canada
*
Author to whom correspondence should be addressed.
Entropy 2017, 19(9), 464; https://doi.org/10.3390/e19090464
Received: 4 August 2017 / Revised: 28 August 2017 / Accepted: 31 August 2017 / Published: 2 September 2017
(This article belongs to the Special Issue Work Availability and Exergy Analysis)
This paper analyzes the energetic and exergy performance of an active magnetic regenerative refrigerator using water-based Al2O3 nanofluids as heat transfer fluids. A 1D numerical model has been extensively used to quantify the exergy performance of a system composed of a parallel-plate regenerator, magnetic source, pump, heat exchangers and control valves. Al2O3-water based nanofluids are tested thanks to CoolProp library, accounting for temperature-dependent properties, and appropriate correlations. The results are discussed in terms of the coefficient of performance, the exergy efficiency, and the cooling power as a function of the nanoparticle volume fraction and blowing time for a given geometrical configuration. It is shown that while the heat transfer between the fluid and solid is enhanced, it is accompanied by smaller temperature gradients within the fluid and larger pressure drops when increasing the nanoparticle concentration. It leads in all configurations to lower performance compared to the base case with pure liquid water. View Full-Text
Keywords: magnetic refrigeration; parallel-plate regenerator; gadolinium; nanofluid; 1D model magnetic refrigeration; parallel-plate regenerator; gadolinium; nanofluid; 1D model
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MDPI and ACS Style

Mugica, I.; Roy, S.; Poncet, S.; Bouchard, J.; Nesreddine, H. Exergy Analysis of a Parallel-Plate Active Magnetic Regenerator with Nanofluids. Entropy 2017, 19, 464. https://doi.org/10.3390/e19090464

AMA Style

Mugica I, Roy S, Poncet S, Bouchard J, Nesreddine H. Exergy Analysis of a Parallel-Plate Active Magnetic Regenerator with Nanofluids. Entropy. 2017; 19(9):464. https://doi.org/10.3390/e19090464

Chicago/Turabian Style

Mugica, Ibai, Steven Roy, Sébastien Poncet, Jonathan Bouchard, and Hakim Nesreddine. 2017. "Exergy Analysis of a Parallel-Plate Active Magnetic Regenerator with Nanofluids" Entropy 19, no. 9: 464. https://doi.org/10.3390/e19090464

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