Abstract
Translucent thermal insulation walls for detached houses are to take solar radiation gain and daylight indoor for heating and daytime lighting energy reduction and for comfortable lighting environment. In this paper, study on the wall performance by means of computer simulation is described. The computer simulation shows that, a higher light transmittance brings a large reduction of daytime lighting energy. In order to reduce heating energy, the total solar energy transmittance is most important factor. The higher the total solar energy transmittance, the more the heating energy is reduced. The optical and thermal performance of a wall which brings the largest total energy reduction (heating, cooling, daytime lighting) depends on climate. The wall with 0.4[W/K•m2] of U value (overall heat transfer coefficient), 0.32 of the solar transmittance, and 0.38 of the luminous transmittance can reduce a total energy brings a large energy reduction in total, in Tokyo or most region in Japan.
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