Radiation Heat Transfer Control by a Porous Layer and Gas Injection

Shigenao Maruyama

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The possibility of radiation heat transfer control by a combined model of an active thermal insulation system and a radiative converter was investigated. A semitransparent porous layer was placed between a high-temperature region and a low-temperature region, and gas was injected through the layer in the positive and negative directions. The mechanism of heat transfer is completely different for the positive and negative mass flux. By changing mass flux of air between-0.1 and 0 kg m-2s-1, dimensionless radiative flux at the back face can be controlled between 2×104 and 0.1. In this region, the porous layer behaves as the active thermal insulation system, and the mechanism of the radiation heat transfer control is similar to that of a triode.

Original languageEnglish
Pages (from-to)211-215
Number of pages5
JournalTransactions of the Japan Society of Mechanical Engineers Series B
Volume58
Issue number545
DOIs
Publication statusPublished - 1992 Jan 1

Keywords

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

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering

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