Solar control window film Albeedo™, improving thermal environment of both inside the building and the street by reflecting near infrared rays upwards.

Solar control window film Albeedo™ has an effect on reduction of solar radiation into a room by reflecting heat rays upward. The reduced solar radiation is equivalent to cooling load reduction of air-conditioner. When you calculate the rough energy improvement effect, please use the calculation formula here below.

TSG of 3mmt clear float glass (TSG (A)) [kWh/m²]
TSG (A) = Solar radiation × SHGC (A) of clear float glass

TSG of glass applied with the film (TSG (B)) [kWh/m²]
TSG (B) = Solar radiation × SHGC (B) of glass applied with the film

• The amount of electricity reduction［kWh］
  = { (TSG (A) - TSG (B))［kWh/m²］× total area of the window getting solar radiation［m2］} / COP^*
• The amount of money of electricity reduction［$］
  = The amount of electricity reduction［kWh］× unit price of electricity［kWh］
• The amount of CO2 emission reduction［kg-CO2］
  = The amount of electricity reduction［kWh］× CO2 emission coefficient［kg-CO2/kWh］

• * COP (Coefficient of Performance)
  Ratio of heating/cooling capacity to the effective power input of the air conditioning unit. It is defined as the cooling/heating capacity [kW] divided by rated power consumption [kW].

The fraction of solar radiation transmitted through a window (glazing), including both directly transmitted part and absorbed and subsequently transferred inward part. TSG is its absolute value. SHGC is the ratio between solar radiation and TSG, and has a value of between 0 and 0.87.

It is an index of the shading performance of solar radiation. It represents the proportion of solar radiation passes through a 3mm clear float glass applied with a window film as an average criteria 1 compared to that through a plain clear float glass. The lower coefficient value, the better shading performance.

The fraction of total visible light that passes through a window (glazing), weighted by the sensitivity of human eye prescribed by ISO.

The fraction of total visible light that is reflected by a window (glazing), weighed by the sensitivity of human eye prescribed by ISO.

The fraction of total ultra-violet light that is rejected from passing through a window (glazing).
UVR = 1 - (UV light transmittance)

U-value is an index of heat insulation performance for a glass applied with a window film. It represents how much amount of heat pass per 1m² in one hour through the 3mm clear float glass applied with a window film under the conditions that air temperature difference between both sides of the glass is exactly 1 degree C. The lower U-value, the better heat insulation performance.

The fraction of near infrared that is rejected from passing through a window (glazing). The value obtained by calculation assuming the integral value of weighing coefficient of 780-2500nm. Wavelength based on ISO9050 is defined to be 1, and it includes re-emission of near infrared absorbed.