Abstract
In this study, the water contain concrete board newly developed was settled on the building roof for two years and it experimented. In three different experiments district of installation method, it was measured and analysis of the amount of net radiation, amount of conduction heat, amount of sensible heat etc. in the natural rainfall conditions. It was assumed to be a purpose of this research to verify the influence that the difference between the construction method and the volume of water in the effect of the heat decrease. By installing a water contain boad two a gap, conduction heat of the building is reduced by up to 97%, had a pronounced effect. Dry and wet did not influence it so much. For the reduction of the surface temperature, exhibit a sufficient effect in 1 layer. Dry and wet influences in this, and a regular watering is necessary to enhance the effect. For sensible heat, 1 layer, 2 layers both had the effect of reducing the accumulation sensible heat of the day 60% or more. It was effective for the dry and wet both, but it was strongly influenced by weather conditions.
