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Heat transfer through superinsulation from ambient to cryogenic temperatures.

Author(s) : HIRSCHL C., KRÁLIK T., LAA C., et al.

Summary

For more than 30 years thermal measurement results and analytical formulas are available to calculate the heat transfer through superinsulation. According to the temperature dependence of the emissivity for aluminium, the most commonly used material for the reflecting surfaces, derivations based on the Stefan-Boltzmann-law for radiative heat transfer have been established. Together with conductive terms this leads to formulas for the calculation of heat transfer through superinsulation. Using new measurement results of temperature dependent emissivity and conductivity the authors have performed heat flux calculations applying common software tools. The heat transfer through the superinsulation and the temperature distribution inside the superinsulation calculated with this new approach has been compared with the established formulas and measurement results.

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Pages: 2006-3/ICEC III-C8

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Details

  • Original title: Heat transfer through superinsulation from ambient to cryogenic temperatures.
  • Record ID : 2008-1096
  • Languages: English
  • Source: Multiconference CryoPrague 2006 (9th Cryogenics 2006, ICEC 21, ICMC'06)
  • Publication date: 2006/07/17

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