APPLICATION OF A BREATHING WALL USING RICE STRAW CHARCOAL : Thermal and moisture characteristics

Abstract

A breathing wall using rice straw charcoal was applied to the solar house, which had a floor heating and cooling system using outdoor air. In order to investigate the possibility of practical use of the wall, thermal and moisture characteristics of the wall were experimentally examined using the actual sized walls installed in the solar house, which was situated in suburban Tokyo. As a result of the outdoor measurement, it was found that high humidity condition in the walls did not last longer than a day from winter through summer. Moreover, in spite of high wind velocity condition in summer, the difference of temperature between the walls inflow-surface and the room showed less than 3K.