THERMAL CHARACTERISTICS OF AN OPENING WITH SOLAR RADIATION SHADING

Evaluation of optical characteristics on a venetian blind and thermal characteristics regarding an air space

Abstract

An opening of a building significantly affect a heating and cooling load and indoor comfort. The authors developed more precise theories analyzing optical properties of an inner installed venetian blind by introducing Radiance and behavior of the air flow by using CFD. And the theories were compared with experimental values. As a result, the calculated value is well according to experimental value. These theories were incorporated into a heat load calculation program LESCOM developed by the authors. Annual load calculations were executed by a venetian blind angle controlled every one minute.