All about glass > Solar factor g

Energy or solar properties of glass products are expressed by :  
 


- Energy (heat) Reflection         RE +RES

- Energy (heat )Transmission    TE + TES

- Energy ( heat ) Absorption     AE

RE + RES + TE + TES + AE = 100%



solar factor or solar heat gain coefficient g expressed as a %
g = TE + TES
g = shgc = the measure of the total amount of heat, or energy , passing through the glazing 

Solar factor g  =  0.87 x shading coefficient