CaloriSMART: Small-scale test-stand for rapid evaluation of active magnetic regenerator performance

Griffith, Lucas; Czernuszewicz, Agata; Slaughter, Julie; Pecharsky, Vitalij

doi:10.1016/j.enconman.2019.111948

Title: CaloriSMART: Small-scale test-stand for rapid evaluation of active magnetic regenerator performance

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Abstract

We report operation of a device designed specifically for rapid experimental evaluation of performance of magnetocaloric materials in different magnetic fields using a compact active magnetic regenerator bed with a total volume of approximately 5 mL. Other features of the system include digital control of the rotating-permanent-magnet field source and custom dual-opposed syringe pump that enable precise tuning and coupling of the flow profile and the magnetic field profile. Performance of the device is demonstrated for flow volumes between 1 and 4 mL (utilization from 0.48 to 1.9), maximum magnetic fields of 1.13 and 1.45 T, and applied cooling powers from 0 to 20 W at frequencies from 0.5 to 4 Hz. A regenerator comprised of 25 g of 200 µm spherical Gd powder reached temperature spans of 19.3 K under no applied cooling load and 2.6 K under the maximum applied cooling load of 20 W. The device also achieves a very high specific exergetic cooling power of 73 W L^-1T^-1. Results obtained at two different maximum magnetic fields in the same device suggest a powerful new scaling for regenerator performance: the exergetic power quotient. The exergetic power quotient shows a simple scaling of device cooling performance with themore »« less

Authors:

Griffith, Lucas ^[1]; Czernuszewicz, Agata ^[1]; Slaughter, Julie ^[1]; Pecharsky, Vitalij ^[2]

Ames Lab., Ames, IA (United States)
Ames Lab., Ames, IA (United States); Iowa State Univ., Ames, IA (United States). Dept. of Materials Science and Engineering

Publication Date:: Fri Nov 01 00:00:00 EDT 2019

Research Org.:: Ames Lab., Ames, IA (United States)

Sponsoring Org.:: USDOE Office of Energy Efficiency and Renewable Energy (EERE)

OSTI Identifier:: 1569743

Alternate Identifier(s):: OSTI ID: 1564589

Report Number(s):: IS-J 10000
Journal ID: ISSN 0196-8904

Grant/Contract Number:: AC02-07CH11358

Resource Type:: Accepted Manuscript

Journal Name:: Energy Conversion and Management

Additional Journal Information:: Journal Volume: 199; Journal Issue: C; Journal ID: ISSN 0196-8904

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 47 OTHER INSTRUMENTATION

Citation Formats


                    Griffith, Lucas, Czernuszewicz, Agata, Slaughter, Julie, and Pecharsky, Vitalij. CaloriSMART: Small-scale test-stand for rapid evaluation of active magnetic regenerator performance.  United States: N. p., 2019. 
Web.  doi:10.1016/j.enconman.2019.111948.

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                    Griffith, Lucas, Czernuszewicz, Agata, Slaughter, Julie, & Pecharsky, Vitalij. CaloriSMART: Small-scale test-stand for rapid evaluation of active magnetic regenerator performance.  United States.  https://doi.org/10.1016/j.enconman.2019.111948

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                    Griffith, Lucas, Czernuszewicz, Agata, Slaughter, Julie, and Pecharsky, Vitalij. Fri .  
"CaloriSMART: Small-scale test-stand for rapid evaluation of active magnetic regenerator performance".  United States.  https://doi.org/10.1016/j.enconman.2019.111948.  https://www.osti.gov/servlets/purl/1569743.

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@article{osti_1569743,

  title        = {CaloriSMART: Small-scale test-stand for rapid evaluation of active magnetic regenerator performance},

  author       = {Griffith, Lucas and Czernuszewicz, Agata and Slaughter, Julie and Pecharsky, Vitalij},

  abstractNote = {We report operation of a device designed specifically for rapid experimental evaluation of performance of magnetocaloric materials in different magnetic fields using a compact active magnetic regenerator bed with a total volume of approximately 5 mL. Other features of the system include digital control of the rotating-permanent-magnet field source and custom dual-opposed syringe pump that enable precise tuning and coupling of the flow profile and the magnetic field profile. Performance of the device is demonstrated for flow volumes between 1 and 4 mL (utilization from 0.48 to 1.9), maximum magnetic fields of 1.13 and 1.45 T, and applied cooling powers from 0 to 20 W at frequencies from 0.5 to 4 Hz. A regenerator comprised of 25 g of 200 µm spherical Gd powder reached temperature spans of 19.3 K under no applied cooling load and 2.6 K under the maximum applied cooling load of 20 W. The device also achieves a very high specific exergetic cooling power of 73 W L-1T-1. Results obtained at two different maximum magnetic fields in the same device suggest a powerful new scaling for regenerator performance: the exergetic power quotient. The exergetic power quotient shows a simple scaling of device cooling performance with the amount of active material and the magnetic field strength. This suggests results from a small device correlate to expected performance of a larger regenerator, making the exergetic power quotient a well-suited parameter for evaluating functionality of active magnetic regenerators employing new magnetocaloric materials.},

  doi          = {10.1016/j.enconman.2019.111948},

  journal      = {Energy Conversion and Management},

  number       = C,

  volume       = 199,

  place        = {United States},

  year         = {Fri Nov 01 00:00:00 EDT 2019},

  month        = {Fri Nov 01 00:00:00 EDT 2019}

}

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