Thermal Conductivity and Density Evaluation of Nanosuspension as Latent Heat Storage Material

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  • Morita Shin-ichi
    Dept. of Mechanical Eng., National Institute of Tech., Yonago College
  • Irie Fumiya
    Adv. Course of Production Sys. Eng., National Inst. of Tech., Yonago Coll., A.C.
  • Hirano Katsuma
    Adv. Course of Production Sys. Eng., National Inst. of Tech., Yonago Coll., A.C.
  • Hayamizu Yasutaka
    Dept. of Mechanical Eng., National Institute of Tech., Yonago College
  • Yamada Takanobu
    Dept. of Mechanical Eng., Kitami Institute of Tech.
  • Horibe Akihiko
    Graduate School of Natural Science and Tech., Okayama Univ.

Bibliographic Information

Other Title
  • ナノサスペンション型潜熱蓄熱材の熱伝導率・密度評価

Abstract

<p>This study shows the results of measurement and evaluation of the thermal conductivity and density of the nanosuspension type latent heat storage material in which the latent heat storage material is dispersed in nano size. The latent heat storage material dispersed in the test nano suspension is tetracosane with a melting point of 50.6 ° C, and is dispersed in distilled water using a nonionic surfactant. The latent heat storage material dispersed by using an ultrasonic homogenizer has an average diameter of 265 nanometers. The data of density and thermal conductivity of nanosuspensions as a flowable latent heat storage materials are provided useful basic data for the design of latent heat storage systems. In this study, a density hygrometer is used to measure the density of the nanosuspension, an experimental device of transient hot wire method is used to measure the thermal conductivity. The measurement range are the mass composition ratio of dispersoid 10.0 to 40.0mass% and the temperature of 10 to 84°C. It is shown that the density of the test nanosuspension can be estimated by the additivity law, and that the Maxwell-Eucken model is effective for the estimation of the thermal conductivity.</p>

Journal

  • Netsu Bussei

    Netsu Bussei 33 (4), 151-158, 2019

    JAPAN SOCIETY OF THERMOPHYSICAL PROPERTIES

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