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Investigation on Emissive Properties of 3-DOM Peroskite-Type Oxides

[+] Author Affiliations
Yimin Xuan, Jinguo Huang, Yuge Han

Nanjing University of Science & Technology, Nanjing, Jiangsu, China

Paper No. IHTC14-22049, pp. 761-766; 6 pages
doi:10.1115/IHTC14-22049
From:
  • 2010 14th International Heat Transfer Conference
  • 2010 14th International Heat Transfer Conference, Volume 5
  • Washington, DC, USA, August 8–13, 2010
  • Conference Sponsors: Heat Transfer Division
  • ISBN: 978-0-7918-4940-8 | eISBN: 978-0-7918-3879-2
  • Copyright © 2010 by ASME

abstract

This paper is aimed to investigate radiative properties of structured surface of thermochromic material, with taking three-dimensional ordered macroporous (3-DOM) perovskite-type oxide La0.825 Sr0.175 MnO3 (LSMO) as an example. Numerical calculation is conducted to obtain spectral distribution of absorptance of such surfaces with different structural parameters by means of the finite difference time domain (FDTD) method. It is found that when the cell size is one order smaller than the wavelength of thermal radiation, the surface absorptance of 3-DOM LSMO is significantly enhanced compared with that of the bulk material. The directional and polarization dependence of spectral absorptance are also analyzed. The results provide some instructive information for adjusting and controlling radiative features of surfaces made of thermochromic materials.

Copyright © 2010 by ASME

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