Glossary:Glossary-Plus
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Glossary: WUFI-Plus
Solar Heat Gain Coefficient
- The Solar Heat Gain Coefficient (SHGC) measures how well a window blocks heat from sunlight. The SHGC is the fraction of the heat from the sun that enters through a window, both directly transmitted, and absorbed and subsequently released inward.
- The SHGC replaced the shading coefficient an the standard indicator of a window‘s shading ability
- SHGC is expressed as a number between 0 and 1.
- SHGC can be expressed in terms of the glass alone or can refer to the entire window assembly.
- The lower a window's SHGC, the less solar heat it transmits.
For incident radiation that is diffuse, the hemispherical SHGC must be used
