A field test on the contribution of water-retentive ceramic tile to the reduction of environment heat accumulation

Abstract

It was pointed out that a prefabricated classroom building for school children which had been constructed before summer turned out to create a very hot environment in summer. The galvanized sheet iron roof of the building was covered with a water-retentive ceramic tile and water was sprayed on the tile in an attempt to cool the classroom by evaporative cooling. Because of evaporating cooling, the surface temperature of the wetted covering tile was 15 °C lower than that of the original roof under similar meteorological conditions, and the room temperature was lowered by 2 to 3 °C