In this study, the thermal performance of the system of glass window installed with a curved venetian blind is investigated. Two types of glass window, two types of venetian blind and three slat angles are used to study the variation of the heat transmission through the system of glass window installed with venetian blind with the solar profile angle.
The solar heat gain coefficient and the overall heat transfer coefficient are used as the heat transmission indices in this study (see eq. 1).
Two types of glass window are single pane clear glass and double pane clear glass.
The single pane clear glass is 6 mm thick.
The double pane clear glass is consisted of two 6 mm clear glass with 6 mm air gap in between.
Two types of blind are white and black blind.
The slat of the blind has a width of 25.4 mm and thickness of 0.17 mm.
The slat has an arc length and a radius of curvature of 27.3º and 52.3 mm.
The slats are separated by a pitch of 22.2 mm.
The conductivity of the slat is 120 W/m-K.
The optical properties of the glass and the blind are shown in table 2.