| 요약2 |
According as the economy develops and the level of living quality rises, a large enclosure buildings such as the center of a large-scale international conferences, exhibitions, a large sports facilities are increasing in domestic as well as advanced countries. This large enclosure buildings have generally large space volume and a high density of occupancy per unit floor area compared to other buildings. Especially, it has the feature that the thermal environment has big difference horizontally as well as vertically and living spaces are restricted within nearby floor area. Also, this spaces have special thermal characters and airflow mechanism each other. CFD simulation can analyze the various thermal characters of large enclosure buildings exactly. The merit of simulation is that it can minimize the error in planning step by analyzing various airflow and thermal character in advance when the air conditioner works. Recently, the use of the under floor supply air conditioning system are increasing. This system air conditions not total space but the living space nearby the floor is by installing inlet on floor or under the seats. This study aimed at predictive evaluation of thermal environment in a large-scale auditorium appling the under floor supply air conditioning system by using CFD simulation. From thermal environment point of view in the residential field, the results of this study are as follows; 1) In cooling condition, all CASEs satisfy allowable supply air velocity 0.35m/s and CASE 2 and CASE 5 at which supply air temperature is about 20˚C are suitable condition. 2) In heating condition, all CASEs satisfy allowable supply air velocity 0.5m/s and CASE 7 and CASE 9 at which supply air temperature is about 22˚C are suitable condition. |