Temperature Distribution in a Layer of Active Thermal Insulation System Heated by a Gas Burner

Shigenao Maruyama, Naotaka Shimizu

Research output: Contribution to journalArticlepeer-review


Temperature distribution in a layer of an active thermal insulation system was measured experimentally. A semitransparent porous layer was heated by a gas burner, and air was injected from the back face of the layer. The temperature in the layer was measured by thermocouples. The temperature distributions were compared with numerical solutions. The thermal penetration depth of the active thermal insulation layer with gas injection can be reduced to 3 mm. The surface temperature of a conventional insulation layer without gas injection reached 1 500 K, and the temperature at the back surface of a 10 mm thick layer reached 600 K. The transient temperature of the active thermal insulation reached a steady state very quickly compared with conventional insulation. These characteristics agreed qualitatively with numerical solutions.

Original languageEnglish
Pages (from-to)2550-2555
Number of pages6
JournalTransactions of the Japan Society of Mechanical Engineers Series B
Issue number552
Publication statusPublished - 1992


  • Active Thermal Insulation
  • Heat Transfer Control
  • Porous Media
  • Thermal Radiation

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering


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