The effects of the investigated parameters on the ShW SHGC for diffuse radiation are similar to the effect on the ShW SHGC for direct radiation.
When blind is installed to different kinds of glass window other than the clear glass window, it is found that the thermal performance is similar.
The magnitude of the ShW SHGC for the glass window with blind is also dependent on the optical properties of the glass window used.
The glass window with blind having the glass transmittance of a lower value gives a lower value of the ShW SHGC.
The absorptance of the glass window has direct effect on the LoW SHGC.
Understanding the effect of the investigated parameters on the shortwave solar heat gain for the direct radiation and diffuse radiation would help us in choosing the proper venetian blind to control the heat gain to the room.
In this study, only heat gain in the shortwave part of radiation is studied.
To determine the total heat gain to the room the conduction heat gain and the heat gain in the longwave part of radiation have to be included.