Solar heat gain coefficient(redirected from G-value)
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Solar heat gain coefficient(SHGC)
An indicator of the amount of solar radiation admitted through and absorbed by a window and subsequently released as heat indoors. SHGC is expressed as a number between 0 and 1; the higher the number, the more solar heat the window transmits.
solar heat gain coefficient
The fraction of normally incident solar energy that is transmitted through glazing under standard summer conditions.