INFLUENCE OF THE SIZE AND POSITION OF WINDOWS BLINDS ON HEAT LOSSES

Abstract

Heat losses in buildings have high influence on construction materials choice, size and quality of windows, doors or glass roofs and the construction processes. For a 10 floor-building, heat losses through windows are almost half of the losses of the whole building. With that in mind, improving the thermal protection of windows and other glass surfaces can increase energy savings. One example for thermal protection increase is using blinds on windows. Influence of the size and position of the windows blinds on heat losses is analysed in this paper. A mathematical model was developed and experimental study was conducted to obtain the values of thermal losses in the function of the position and size of the blind openings. The obtained results showed the ratio of the amount of heat for the window with and without a blind. According to the measured values, the thermal insulation is increased for about 18 % on the window with blinds. The use of the blinds is profitable and the mentioned savings can contribute to the lower energy consumption in house heating and cooling.