REXI blue glass present blue look by absorbing, reflecting, and transmitting light of a specific wavelength. It is mainly used for windows, and interior and exterior decoration materials of public facilities in buildings.
It can effectively absorb the radiant heat of the sun and produce a "cold room effect", which can achieve the effect of saving heat and energy. The sunlight that passes through becomes soft and avoids glare. It can also absorb the sun's ultraviolet rays, effectively prevent the fading and metamorphism of indoor objects. China manufacturers can increase the appearance of buildings, too.
Visible Light Transmittance, abbreviated to Tvis, is the earliest commonly used optical performance parameter and influence the blue glass price. This index not only affects the transparency effect of the building, but also directly affects the lighting energy consumption of the interior.
Therefore, it is proposed in the “Energy-saving Design Standards for Public Buildings” that when the window-to-wall ratio is less than 0.4, the visible transmittance of the blue float glass should not be less than the limit of 0.4. Actually China blue glass suppliers can get this parameter to about 0.5. Some households installed screens with a light transmittance of 70%, Chinese factory suggests it had better to combine with colorless and transparent glass, and had a total light transmittance of about 61%, which is just fine.
However, with blue one, the light transmittance is only 35%, certainly affect the indoor lighting requirements.