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Selecting Windows - Florida Solar Energy Center

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Light to <strong>Solar</strong> Gain ratio<br />

- A measure of spectral selectivity<br />

VT Visible transmittance:<br />

Fraction of incident light transmitted<br />

SHGC <strong>Solar</strong> heat gain coefficient:<br />

Fraction of incident solar radiation admitted as<br />

heat gain<br />

LSG Light-to-<strong>Solar</strong> Gain ratio:<br />

Ratio of visible transmittance to solar heat gain<br />

coefficient<br />

LSG = VT<br />

SHGC

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