Performance investigation of a high-field active magnetic regenerator

Reed Teyber, Jamelyn Holladay, Kerry Meinhardt, Evgueni Polikarpov, Edwin Thomsen, Jun Cui, Andrew Rowe and John Barclay

Applied Energy, 2019, vol. 236, issue C, 426-436

Abstract: Regenerative magnetic cycles are of interest for small-scale, high-efficiency cryogen liquefiers; however, commercially relevant performance has yet to be demonstrated. To develop improved engineering prototypes, an efficient modeling tool is required to screen the multi-parameter design space. In this work, we describe an active magnetic regenerative refrigerator prototype using a high-field superconducting magnet that produces a 100 K temperature span. Using the experimental data, a semi-analytic AMR element model is validated and enhanced system performance is simulated using liquid propane as a heat transfer fluid. In addition, the regenerator composition and fluid flow are simultaneously optimized using a differential evolution algorithm. Simulation results indicate that a natural gas liquefier with a 160 K temperature span and a second-law efficiency exceeding 20% is achievable.

Keywords: Active magnetic regenerator; Magnetocaloric effect; Superconducting magnet; Liquefaction; Optimization (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:appene:v:236:y:2019:i:c:p:426-436

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DOI: 10.1016/j.apenergy.2018.12.012

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