Experimental testing of correlations to calculate the atmospheric 'transparency window' emissivity coefficient

To link to full-text access for this article, visit this link: http://dx.doi.org/10.1016/j.solener.2005.06.012 Byline: M. Cucumo, A. De Rosa, V. Marinelli Keywords: Atmosphere; Transparency window; Emissivity Abstract: An experimental verification of the correlations existing in literature for the calculation of the coefficient of emissivity inside the atmospheric transparency window, situated in the wavelength band 8-14[mu]m, has been performed. In addition, the authors propose a new correlation for the calculation of the coefficient I[micro].sub.in, easily applicable since it presupposes the knowledge of the global emissivity of the sky, for which there are a lot of correlations in literature. Author Affiliation: Department of Mechanical Engineering, University of Calabria, 87030 Arcavacata di Rende (CS), Italy Article History: Received 22 February 2005; Revised 15 June 2005; Accepted 15 June 2005 Article Note: (miscellaneous) Communicated by: Associate Editor Pierre Ineichen