抄録
By the revision of the Building Standard Law of japan in 2003, it is now becoming mandatory to install mechanical ventilation systems in all habitable rooms. Outdoor air delivered from air supply terminal can cause cold draft in rooms during winter season. Numerical prediction of indoor environment in floor heating type room by CFD was successfully performed of an experimental room through comparison with observation and a series of simulation was carried out on cases where the conditions such as type and installation position of air supply terminal, installation area ratio of floor heating system, room configuration, etc were changed. An index to represent cold draft potential was proposed and applied for comparisons of resultant indoor thermal environment.
