From the study, installing the venetian blind behind the glass window can significantly reduce the heat transmission into the space.
The reduction in heat transmission comes from the reduction in the value of the solar heat gain coefficient and the overall heat transfer coefficient.
It is also found that the solar heat gain coefficient of the glass system is dependent on the solar profile angle.
By setting the blind at different slat angle, the value of the solar heat gain coefficient is different.
The blind with a higher reflectance when installed to a higher transmittance glass window will give a better thermal performance in term of heat reduction.
For this specific case, by installing a high reflective venetian blind (white blind) behind the single pane clear glass window, the solar heat gain coefficient is reduced as much as 59.7 percent compared to the solar heat gain coefficient of the plain clear glass (at slat angle of 45 degree and solar profile angle of 60 degree).