What is a good solar heat gain for a window? What Is the Best Solar Heat Gain Coefficient for Windows? In general, SHGC ratings for windows could be anywhere from 0 to 1, with 0.25 to 0.80 as the most common ratings for residential windows.
How do you calculate heat gain through a window?
- Calculate the area in square feet of the space to be cooled, and multiply by 31.25.
- Calculate the heat gain through the windows.
- Calculate the heat generated by occupants, allow 600 BTU per person.
What is the solar heat gain coefficient of glass? The Solar Heat Gain Coefficient (SHGC) number tells you about the measurement of solar energy transmitted through the window. Thus, it tells you how well the window does at blocking heat from the sun. The scale used for SHGC is 0 to 1, with common numbers being anywhere between 0.25 and 0.80.
How much heat is gained through a window? A typical house loses 10% of its heat through the windows. The successful specification of energy efficient windows requires a sound understanding of the dynamics of thermal performance.