Radiative Heat Transfer Across Glass Coated With Gold Nano-Particles

Author:

Chowdhury Humayer12,Xu Xiaoda1,Huynh Phuoc2,Cortie Michael B.1

Affiliation:

1. Institute for Nanoscale Technology, University of Technology Sydney, PO Box 123, Broadway, NSW 2007, Australia

2. Faculty of Engineering, University of Technology Sydney, PO Box 123, Broadway, NSW 2007, Australia

Abstract

Solar glazing based on reflective or absorptive coatings of noble metals or dielectric compounds respectively is well-known. However, the use of gold nano-particles in an absorptive role has hardly been considered. The performance of such coatings was assessed using an array of incandescent lamps as radiation source, and the results ranked against commercial glazing systems. The nanoparticle coatings attenuated the radiation by 40%. An additional 15% of the incoming energy was convected off the inside surface of the glass. The neutral color and simple manufacture of the coatings suggests that they might have applications on architectural glass.

Publisher

ASME International

Subject

Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment

Reference19 articles.

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2. ASTM G 159-98, 1998, Standard Tables for References Solar Spectral Irradiance at Air Mass 1.5: Direct Normal and Hemispherical for a 37° Tilted Surface, American Society For Testing And Materials, West Conshohocken, PA.

3. Smith, G. B., Niklasson, G. A., Scensson, J. S. E. M., and Granqvist, C. G., 1986, “Noble-Metal-Based Transparent Infrared Reflectors: Experiments and Theoretical Analyses for Very Thin Gold Films,” J. Appl. Phys., 59(2), pp. 571–581.

4. ASTM E971-88 (Reapproved 2003), Standard Practice for Calculation of Photometric Transmittance and Reflectance of Materials to Solar Radiation, ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.

5. Bell, J. M., and Matthews, J. P., 1998, “Glazing Materials,” Mater. Forum, 22, pp. 1–24.

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