THERMAL CONDUCTIVITY MEASUREMENT OF MOLTEN SALTS BY THE TRANSIENT HOT-WIRE METHOD (1ST REPORT, CONSTRUCTION OF PROBE AND PRELIMINARY MEASUREMENT OF MOLTEN KNO//3).

Tsuyoshi Karasawa, Yuji Nagasaka, Akira Nagashima

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

An apparatus has been constructed 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 SiO//2 prepared by metal alkoxide hydrolysis process, and titanium leads insulated by plasma sprayed Al//2O//3 with SiO//2 upper coating. The usability of the probe has been tested by measuring the thermal conductivity of molten KNO//3 in the temperature range from 350 to 390 degree C. The accuracy of the present measurement is estimated to be plus or minus 2%.

Original languageEnglish
Pages (from-to)940-945
Number of pages6
JournalNippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume52
Issue number474
Publication statusPublished - 1986 Feb
Externally publishedYes

Fingerprint

molten salts
Molten materials
Thermal conductivity
thermal conductivity
wire
Wire
Salts
probes
alkoxides
insulation
hydrolysis
Insulation
Platinum
Hydrolysis
platinum
titanium
Titanium
Plasmas
coatings
Coatings

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

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title = "THERMAL CONDUCTIVITY MEASUREMENT OF MOLTEN SALTS BY THE TRANSIENT HOT-WIRE METHOD (1ST REPORT, CONSTRUCTION OF PROBE AND PRELIMINARY MEASUREMENT OF MOLTEN KNO//3).",
abstract = "An apparatus has been constructed 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 SiO//2 prepared by metal alkoxide hydrolysis process, and titanium leads insulated by plasma sprayed Al//2O//3 with SiO//2 upper coating. The usability of the probe has been tested by measuring the thermal conductivity of molten KNO//3 in the temperature range from 350 to 390 degree C. The accuracy of the present measurement is estimated to be plus or minus 2{\%}.",
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AU - Nagasaka, Yuji

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