Solar glass transmittance value and y value

What is the difference between visible light reflectance and solar energy transmittance?

Visible light reflectance, front: the fraction of visible light reflected by the front side of a glass. Visible light reflectance, back: the fraction of visible light reflected by the back side of a glass. Solar energy transmittance: the fraction of solar energy transmitted through a glass.

What is the difference between spectral reflectance and UV transmittance?

Spectral reflectance, front: the fraction of radiation of a specific wavelength reflected by the front side of a glass. Spectral reflectance, back: the fraction of radiation of a specific wavelength reflected by the front side of a glass. UV transmittance: the fraction of ultraviolet (UV) radiation transmitted through a glass.

What is total solar energy rejected (TSER)?

Total solar energy rejected (TSER): the fraction of solar energy not transmitted through a glass as heat. Light-to-solar-gain ratio (LSG ratio): the ratio of the visible light transmittance of a glass to its SHGC. Relative heat gain (RHG): the rate of heat gain through a glass under a summer daytime condition.

What are the factors affecting the choice of glass?

The main values in the choice of glass are thermal transmittance, light transmittance, and the solar factor. The solar factor g is the ratio between the solar energy that manages to pass through the glass entering the environment and the total solar energy that strikes the outer surface of the glazing.