Thermal conductivity measurement of molten salts by the transient hot-wire method. 2nd report. Measurements of molten NaNO3 and KNO3 using ceramic-coated probes

Shintaro Kitade, Yuji Kobayashi, Yuji Nagasaka, Akira Nagashima

Research output: Contribution to journalArticle

Abstract

The present paper reports absolute measurements of the thermal conductivity of molten salts by the transient hot-wire method using newly developed ceramic-coated probes. Al2 O3 has been employed as the insulation material and the following techniques have been utilized to produce insulation layers: ion plating for a thin platinum hot-wire and plasma-spray for thick titanium struts. The measurements have been performed on pure NaNo3 in the temperature range 311°C to 388°C and KNO3 349°C to 439°C. The experimental data have an estimated accuracy of ±3%. In comparison with the present results, most of the previous experimental data obtained by steady-state methods show higher values which may be due to the presence of convection and radiation.

Original languageEnglish
Pages (from-to)2411-2416
Number of pages6
JournalNippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume55
Issue number516
Publication statusPublished - 1989 Aug
Externally publishedYes

Fingerprint

molten salts
insulation
Molten materials
Insulation
Thermal conductivity
thermal conductivity
wire
Wire
ceramics
Salts
struts
ion plating
probes
Struts
Plating
sprayers
Platinum
platinum
convection
titanium

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

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abstract = "The present paper reports absolute measurements of the thermal conductivity of molten salts by the transient hot-wire method using newly developed ceramic-coated probes. Al2 O3 has been employed as the insulation material and the following techniques have been utilized to produce insulation layers: ion plating for a thin platinum hot-wire and plasma-spray for thick titanium struts. The measurements have been performed on pure NaNo3 in the temperature range 311°C to 388°C and KNO3 349°C to 439°C. The experimental data have an estimated accuracy of ±3{\%}. In comparison with the present results, most of the previous experimental data obtained by steady-state methods show higher values which may be due to the presence of convection and radiation.",
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AU - Kobayashi, Yuji

AU - Nagasaka, Yuji

AU - Nagashima, Akira

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AB - The present paper reports absolute measurements of the thermal conductivity of molten salts by the transient hot-wire method using newly developed ceramic-coated probes. Al2 O3 has been employed as the insulation material and the following techniques have been utilized to produce insulation layers: ion plating for a thin platinum hot-wire and plasma-spray for thick titanium struts. The measurements have been performed on pure NaNo3 in the temperature range 311°C to 388°C and KNO3 349°C to 439°C. The experimental data have an estimated accuracy of ±3%. In comparison with the present results, most of the previous experimental data obtained by steady-state methods show higher values which may be due to the presence of convection and radiation.

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