Thermal Conductivity Measurement of Molten Salts by the Transient Hot-Wire Method: (1st Report, Construction of probe and preliminary measurement of molten KNO3)

Tsuyoshi Karasawa, Yuji Nagasaka, Akira Nagashima

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

An apparatus has been cnstructed for precise and absolute measurement of the thermal conductivity of molten salts at high temperatures. The principle of the measurement is based on the absolute transient hot-wire method. In order to apply this method to molten salts, the entire probe has to be insulated. After many trials of insulation techniques applied on probes, it has been confirmed that the following probe is the most suitable for the present purpose: platinum thin wire coated with Si02 prepared by metal alkoxide hydrolysis process, and titanium leads insulated by plasma sprayed Al2O3 with SiO2 upper coating. The usability of the probe has been tested by measuring the thermal conductivity of molten KNO3in the temperature range from 350 to 390°C. The accuracy of the present measurement is estimated to be ±2%.

Original languageEnglish
Pages (from-to)940-945
Number of pages6
JournalTransactions of the Japan Society of Mechanical Engineers Series B
Volume52
Issue number474
DOIs
Publication statusPublished - 1986 Jan 1
Externally publishedYes

Keywords

  • Insulation Techniques
  • Molten Salts
  • Thermal Conductivity
  • Thermophysical Properties
  • Transient Hot-Wire Method

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering

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