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Heat Reflective Thin-Film Polymer Insulation with Polymer Nanospheres—Determination of Thermal Conductivity Coefficient

Author

Listed:
  • Danuta Król

    (Faculty of Energy and Environmental Engineering, Silesian University of Technology, 14-100 Gliwice, Poland)

  • Przemysław Motyl

    (Faculty of Mechanical Engineering, University of Technology and Humanities in Radom, 26-600 Radom, Poland)

  • Joanna Piotrowska-Woroniak

    (Faculty of Civil Engineering and Environmental Sciences, Białystok University of Technology, 15-351 Białystok, Poland)

  • Mirosław Patej

    (Ad Alio Sp. z o.o., Konstantego Ciołkowskiego 17, 15-264 Białystok, Poland)

  • Sławomir Poskrobko

    (Faculty of Civil Engineering and Environmental Sciences, Białystok University of Technology, 15-351 Białystok, Poland)

Abstract

In this paper, a method to determine the thermal conductivity coefficient λ in a 200 μm thick heat reflective paint layer, filled with polymer nanospheres with a Total Solar Reflectance (TSR) of 86.95%, is proposed and presented. For this purpose, a “hot box”-type (cube-shaped) test rig was built to carry out experimental tests to measure the temperature distribution on the surface of a double-layer wall containing the material under investigation. Together with the experimental studies, a CFD numerical model was prepared to understand the nature of flow and heat transfer inside the cube—the test chamber. Based on the proposed measurement and analysis method, the thermal conductivity coefficient of the heat reflective coating layer was λ = 0.0007941 W/m∙K.

Suggested Citation

  • Danuta Król & Przemysław Motyl & Joanna Piotrowska-Woroniak & Mirosław Patej & Sławomir Poskrobko, 2022. "Heat Reflective Thin-Film Polymer Insulation with Polymer Nanospheres—Determination of Thermal Conductivity Coefficient," Energies, MDPI, vol. 15(17), pages 1-14, August.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:17:p:6286-:d:900344
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