Abstract
Several environment-friendly technologies were applied to a ten-story office building located at the center of Tokyo. For example, the hybrid air-conditioning system is used. This system is achieved by two inner vertical shafts called eco-shafts and the double skin facade with controllable windows for natural ventilation. This paper shows the results of spring measurements and simulations and discusses the year-round performance of the double-skin facade and the hybrid ventilation system. The results demonstrate that a hybrid ventilation system combined with a double-skin facade effectively provides both thermal comfort and energy conservation.
