Thermal radiation properties of molten salt (properties of alkali metal carbonates)

Toshiro Makino*, Manabu Edamura, Akihiro Kato, Atsumasa Yoshida

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


Thermal radiation properties were investigated by a spectroscopic experiment on three molten alkali metal carbonates: lithium carbonate, sodium carbonate, and potassium carbonate. Reflectance spectra of the salt layers were measured at wave-lengths from 0.5 to 13.0 μm. The results were analyzed to obtain the spectra of the refractive index n and absorption coefficient K. Since the semi-transparent wave-length region of the salts was found to range in the main part of the Planckian distribution, the values of K were determined most carefully. The spectra of n and K are described by continuous functions of radiation wavelength for heat-transfer engineering application. Some common features of the radiation properties are reviewed over the molten nitrates, chlorides, and carbonates of the three alkali metals, lithium, sodium, and potassium.

Original languageEnglish
Pages (from-to)331-339
Number of pages9
JournalHeat Transfer - Japanese Research
Issue number4
Publication statusPublished - 1992
Externally publishedYes

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes


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