Total Solar Energy Rejection

A lot of people think that infrared ir rejection and total solar energy rejection are the same thing but this is not the case.

Total solar energy rejection. The ir rejection rate is a number that lets customer understand that the film can reject majority of the heat from infrared it does not mean that if a large portion of the ir is blocked. The solar energy spectrum is composed of the uv visible light and infrared spectrums. The total amount of visible light that is transmitted through the window film glass. Total solar energy rejected tser is a factor that describes the total amount of solar energy uv visible ir that is rejected from passing through glass.

Clearly then when we read the specification called total solar energy rejection we can now see that it is not referring to temperature reduction percentage but rather it is the percentage of incident solar energy rejected. Total infrared rejection properties are calculated over the spectral range of 780 2500nm. Two common heat rejection indexes used are irr infrared rejection and tser total solar energy rejection. The lower the number the less visible light is being transmitted darker.

Almost all window film block 99 100 of uv rays. The total amount of ultra violet that is rejected by the window film glass. All film products indeed all glazing systems have improved total solar energy rejection as the sun climbs higher in the sky and sunlight strikes a vertical glass window less directly. Total solar energy rejected tser on angle is not recognized by them as a measure of performance.

Irr measures only the amount of ir infrared component that is rejected by the window film. The higher the. The total amount of solar energy heat rejected by the window film glass. The total solar energy tser specification along with another specification that is commonly used in the glass.

Let us help you understand some of these common terms better. So if a film has a 65 ir it means the film rejects 65 but lets in 35 ir. Separating the ir rejection for purposes of reporting heat gain is misleading. Although it may be natural to.

However irr does not measure the total amount of heat that is. The shgc or its counterpart the total solar energy rejected tser reflects the true performance of solar heat gain or rejection through a window int o a building and its calculation includes ir rejection. Data captured using nfrc guidelines and calculated for single pane clear glass. Reported values are taken from representative product samples and are.

In order to determine how much heat a window and window film can block you need to check the specifications for total solar energy rejected. The higher the number the less ultra violet rays are behind transmitted.