Development of modulated laser calorimetry using a solid platinum sphere as a reference

Hiroyuki Fukuyama, Hidekazu Kobatake, Kakeru Takahashi, Izuru Minato, Takao Tsukada, Satoshi Awaji

Research output: Contribution to journalArticlepeer-review

37 Citations (Scopus)

Abstract

This study is a fundamental investigation aimed at developing a new noncontact modulated laser calorimetry method incorporating a static magnetic field to achieve measurement of the true thermal conductivity of a metallic melt. For establishing the experimental principle, a solid platinum sphere was used in this study. The sphere positioned in the centre of a radio frequency coil was heated sinusoidally by a laser; its temperature response was monitored. Analyses of the temperature amplitude and phase difference between the laser input and temperature response yielded the heat capacity, thermal conductivity and hemispherical total emissivity of platinum for temperatures of 1400-1700 K. The obtained data agree with the reference data within experimental uncertainty, which verifies the experimental method.

Original languageEnglish
Article number036
Pages (from-to)2059-2066
Number of pages8
JournalMeasurement Science and Technology
Volume18
Issue number7
DOIs
Publication statusPublished - 2007 Jul 1

Keywords

  • Heat capacity
  • Hemispherical total emissivity
  • Modulated laser calorimetry
  • Platinum
  • Thermal conductivity

ASJC Scopus subject areas

  • Instrumentation
  • Engineering (miscellaneous)
  • Applied Mathematics

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