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Education Material of IWFA

1. Infra-Red (IR) rejection not accurate to describe solar heat control of window film product.
2. IR only contribute 54% of Total Solar Energy Rejection.
3. SHGC (Solar Heat Gain Coefficient is more comprehensive to solar control performance.
4. It Is misleading to consumer if Manufacturer refer to IR rejection instead of SHGC.

Link to the articles of IWFA : http://www.cornellstorefrontsolutions.com/specs/IWFA%20-%20IR%20Ratings%20of%20Window%20Film.pdf

<blockquote data-quote="starmax" data-source="post: 717634" data-attributes="member: 43555">Education Material of IWFA1. Infra-Red (IR) rejection not accurate to describe solar heat control of window film product.2. IR only contribute 54% of Total Solar Energy Rejection.3. SHGC (Solar Heat Gain Coefficient is more comprehensive to solar control performance.4. It Is misleading to consumer if Manufacturer refer to IR rejection instead of SHGC.Link to the articles of IWFA : <a href="http://www.cornellstorefrontsolutions.com/specs/IWFA%20-%20IR%20Ratings%20of%20Window%20Film.pdf" target="_blank">http://www.cornellstorefrontsolutions.com/specs/IWFA%20-%20IR%20Ratings%20of%20Window%20Film.pdf</a><img src="http://img17.imageshack.us/img17/8081/ikqh.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></blockquote>

[QUOTE="starmax, post: 717634, member: 43555"] [B]Education Material of IWFA[/B] [COLOR=rgb(51,51,51)]1. Infra-Red (IR) rejection not accurate to describe solar heat control of window film product.[/COLOR] [COLOR=rgb(51,51,51)]2. IR only contribute 54% of Total Solar Energy Rejection.[/COLOR] [COLOR=rgb(51,51,51)]3. SHGC (Solar Heat Gain Coefficient is more comprehensive to solar control performance.[/COLOR] [COLOR=rgb(51,51,51)]4. It Is misleading to consumer if Manufacturer refer to IR rejection instead of SHGC.[/COLOR] [COLOR=rgb(51,51,51)]Link to the articles of IWFA : [URL="http://www.cornellstorefrontsolutions.com/specs/IWFA%20-%20IR%20Ratings%20of%20Window%20Film.pdf"]http://www.cornellstorefrontsolutions.com/specs/IWFA%20-%20IR%20Ratings%20of%20Window%20Film.pdf[/URL][/COLOR] [COLOR=rgb(51,51,51)][IMG]http://img17.imageshack.us/img17/8081/ikqh.jpg[/IMG][/COLOR] [/QUOTE]

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