Hybrid air conditioning system at Liberty Tower of Meiji University.

During design phase, Liberty Tower of Meiji University, a high-rise building located at the center of Tokyo Metropolitan area, several testing methods were applied to ensure the effectiveness of the various components used in the principle of hybrid ventilation system design. Its special design feature is the "wind-floor'', whereby the central core is planned to induce natural ventilation for every floor by creating stack-effect. Other measures are also taken to improve the quality of indoor environment including the use of natural ventilation windows controlled automatically, automatic outdoor air intake, and a proper building environment and energy management system that takes advantage of the optimum outdoor air quality and temperature to cut energy consumption costs of the building. In this paper, the outline of the system of this building and some verification are promptly reported.