English

In order to improve the climate in the atrium of a school building, CFD techniques have been applied. The current simulation has been simulated and appears to be in adequation with onsite measurements. Modifications of cross ventilation, outside sun blilnds and floor cooling have been studied for a further renovation.

Air conditioning in passenger car is an important part of the modern train technology. The induction unit (IDU) - the terminal equipment of induced draft system - is studied in this paper. Some experiments were done to investigate its characteristics including fluid field of return air inlet and supply air outlet, velocity decrease of supply air outlet resistance characteristic and induction ratio.

Korean gouvernment supports researches to improve indoor air pollution. For that study, an investigation was conducted on indoor concentration of chemical pollutants, passive flux from building materials, ventilation rate, temperature and relative humidity. A passive measurement method developed by the authors was used.

Recently, the Indoor Air Quality Management Act came into effect in Korea., in order to limit formaldehyde and VOCs concentration levels in new buildings. For that study , six residential units were tested under different conditions : air-cleaning and ventilation effects were evaluated . A comparison of the applicable strategies was made to improve indoor air quality at the pre-occupancy stage of inhabitants.

This paper demonstrates the potential of using CFD for modelling buoyancy-driven displacement ventilation in complex building structures and also the accuracy that can be expected from that use.

This paper presents a numerical method to predict the actual cooling load provided by the underfloor air distribution system (UFAD), therefore the energy consumption can be achieved.

That study aims at improving thermal comfort in the carriage of a new developed high-speed train. To figure out the air distribution pattern a CFD method is used and a prototype experiment validates the method.

In this paper, a theoretical analysis is performed to analyze the effective air exchange rate by fluctuating flow for natural ventilation. A simple model is proposed for the analysis.

This paper puts emphasis on the analysis of air mass flux on natural ventilation in tiered-seating classrooms.Some suggestions are proposed about architectural desing of teaching buildings that may improve the natural ventilation.

The population epidemic investigation method was used for that study in order to investigate the relationship between human uncomfortable feeling symptoms and indoor air conditioning thermal environment. Results are presented.