Language
Main menu
Start your project here
Please enter the code in below box.
 

Solar Reflectance Index (S.R.I.) Test Reports to ASTM E1980-01

What are S.R.I. Figures ?
 
Solar reflectance index (SRI), is another measurement beginning to get some attention as a numerical expression of a coating’s overall ability to reject solar heat.

Total Solar Reflectance (T.S.R.) figures are expressed as a percentage falling between 0% and 100% dependant on a product’s Total Solar Reflectance as tested to ASTM C-1549 or ASTM E-903.

Emissivity or (Infrared emittance), is a measure of the ability of a surface to shed some of its heat in the form of infrared radiation away from the surface.  The results from tests conducted to ASTM C-1371, express the emittance value as a percentage falling between 0% and 100% depending on the product’s performance.

Solar reflectance index (SRI), combines both the T.S.R.% reflectivity value and emittance value as a measure of a coating’s overall ability to reject solar heat.  The (S.R.I.) index calculation is done in accordance with  ASTM E 1980-01.  The calculation is based on a mathematical  formula that includes values for thermal emittance, total solar reflectance, solar absorbance, three convective coefficients, solar flux, the Stefan Boltzman constant, and various other coefficients.
 
 
 
 
Astec Energy Star | Exterior Paint | Heat Reflective Paint | Paint | Professional Paint | Render | Roof Paint | Texture Coating System | Texture Finishes | Texture Paint | Waterproofing | XML Sitemap | Sitemap