Energy Saving Effect of “Insolating not hot” Building Coating

Abstract:

Insolating not hot coating is made out by using a cheap alkaline earth carbonates material with low solar absorptance and high emittance as filler of coating. The results of experiments in Hainan province indicate that the indoor temperature of the experimental house painted with the insolating not hot coating on the color steel corrugated sheet roof is 2 ℃ lower than that painted with a heat reflecting coating from market on the same roof, and 10 ℃ lower than that painted with nothing on the same roof. When air conditioning temperatures of three experimental houses are all set to 24 ℃, the 24 h electricity consumption of the house painted with the insolating not hot coating is 1.72 kWh lower than that painted with nothing, and 0.81 kWh lower than that painted with the heat reflecting coating from market. When air conditioning temperatures of experimental houses are all set to not less than 26 ℃, the electricity saving rates of the house painted with the insolating not hot coating are 40% higher than that painted with nothing, and higher than that painted with the heat reflectting coating from marke by 15.6~20.8 percents.