Optimizing high solar reflective paint to reduce heat gain in building

Abstract

This paper reports the developing the optimal paint formula (Beger Cool Ultra Violet Shield) with color pigments to reduce the heat transfers and minimize the cooling energy consumption of a small building coated. The experimental result shows the different of heat performance and energy consumption of two building, which are coated with conventional paints (colors), and coated with High Solar Reflective Paint (Beger Cool Ultra Violet Shield). In the experimental setting up, the color was applied on the envelop surface of building and using two shades of color namely white and white grey color, 9 hours (08.00 -17.00 in local time) for 9 days was set up, totally 18 days. It was found that the small building that coated with high Solar Reflective Paint (Beger Cool Ultra Violet Shield) has less electric energy consumption due to it can reflect the sun light or infrared ray well. It can help reducing the transfer of heat into the building and can reduce the energy loss in cooling the building. Those cause to low in surface temperature of envelop (roof and wall) and room temperature about 3- 4^oC when comparing with conventional color coated. Beger cool have mainly a composition of reflectivity and refractivity pigment such as: Titanium dioxide, IR reflective and microsphere ceramic. Thus, at building scale, the use of cool colored coatings with increased solar reflectance and refractive can improve building comfort and reduce cooling energy use, and at city city-scale it can contribute to the reduction of the air temperature due to the heat-transfer phenomena and therefore improve outdoor thermal comfort and reduce the heat-island effect.