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Investigations into the thermal performance of multilayer insulation (300-77 K). 2. Thermal analysis.

Author(s) : JACOB S., KASTHURIRENGAN S., KARUNANITHI R.

Type of article: Article

Summary

Sectional heat transfer analysis has shown that the effective thermal conductivity of the multilayer insulation (MLI) varies from section to section of the insulation structure and it has a peak which lies between the middle and warm boundary regions of the MLI. This could be attributed to a peak in residual gas conduction in this region. The theoretical estimation of heat flux through MLI, using a simple analytical model gives a lower (2 to 4 times) value in comparison with the heat flux estimated from calorimetric measurements. A refined model has been suggested which includes the residual gas conduction also in MLI.

Details

  • Original title: Investigations into the thermal performance of multilayer insulation (300-77 K). 2. Thermal analysis.
  • Record ID : 1993-2575
  • Languages: English
  • Source: Cryogenics - vol. 32 - n. 12
  • Publication date: 1992

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