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Convective heat transfer measurements at the thermal boundary layer of gadolinium.

Number: pap. n. 310

Author(s) : LEI Z., FRITZSCHE B., ECKERT K.

Summary

This work reports Mach-Zehnder interferometer measurements on the transient dynamics of heat transfer from a demagnetized gadolinium (Gd) plates into a heat transfer fluid (0.2 M NaOH). The magnetic field is provided by a magnetic assembly with a mean magnetic flux density at Gd plate of 232 mT. First, a heat conduction case is tested by resolving the propagation of the thermal boundary layer emanated from the Gd plates after demagnetization. This result is then compared with the case coupled to a bulk flow with a flow rate of 20 and 30 L/ h, respectively. The temperature adjacent to the Gd plate is extracted for all cases. The more rapid T evolution in the presence of an advective heat transfer process could be verified which clearly demonstrates the capabilities of the measurement setup to resolve the thermal boundary layer down to millimeter range.

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Pages: 5

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Details

  • Original title: Convective heat transfer measurements at the thermal boundary layer of gadolinium.
  • Record ID : 30025980
  • Languages: English
  • Source: Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
  • Publication date: 2019/08/24
  • DOI: http://dx.doi.org/10.18462/iir.icr.2019.0310

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