A solar shading coefficient (SSC) is a measure used to determine the ability of a window or shading device to reduce the solar heat gain into a building. It is specifically related to the amount of solar radiation that is transmitted through a window or shading device, compared to the amount of solar radiation that would transmit through a clear, unshaded, single-pane glass under the same conditions.
The solar shading coefficient is expressed as a number between 0 and 1, with a lower value indicating a greater ability to reduce solar heat gain. A value of 0 means no solar radiation is transmitted, while a value of 1 means all solar radiation is transmitted. The lower the solar shading coefficient, the more effective the window or shading device is at blocking solar heat gain and reducing the amount of cooling needed in the building.
Solar shading coefficients are typically provided by manufacturers for different types of windows, glazing materials, and shading devices to help consumers make informed decisions about energy efficiency and cooling requirements for their buildings.
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