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| | Abstract | | It is well known that the insolation raises the room temperature in buildings and that the crisis of electric power supply is regularly caused by air conditioning in mid summer. Recently, some experiments demonstrated that the room temperature could be kept low when the external wall of buildings were coated with paint admixed with fine silicic spheres whose diameter is in micron scale. The consumption of energy, therefore, will be reduced if room temperature is controlled without any air conditioning and the heat island effects would be lowered. However, the mechanism of this temperature suppression has not been investigated. In this study, we aimed to find out the mechanism of the temperature suppression. As a result, we can clarify the scattered strength distribution with single sphere, and we confirmed the existence of cases that an incident wave and the scattered wave strengthened or weakened each other. These calculated results lead us to explain phenomena with actual paint by our hypothesis. |
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