Proceedings of the SAREK Conference (대한설비공학회:학술대회논문집)
- 2008.06a
- /
- Pages.970-975
- /
- 2008
Comparison of Indoor Thermal Environments in Winter depending on Supply Vent Configurations
급기구 형상에 따른 겨울철 실내 온열환경의 비교
- Han, Hwa-Taik (School of Mechanical and Automotive Engineering, Kookmin University) ;
- Jeong, Young-Kyun (Graduate School, Department of Mechanical Engineering, Kookmin University)
- Published : 2008.06.25
Abstract
This study considers indoor thermal comfort in an ondol space by supply vent configurations to prevent cold draft in winter. A specially-designed vent cap has been investigated in comparison with a round pan-type vent and a simple opening without a cap. Numerical simulations have been conducted using CFD to analyze thermal comfort indices such as Predicted Mean Vote (PMV) and Effective Draft Temperature (EDT) as well as air distribution index i.e. Air Diffusion Performance Index (ADPI). Results show the new vent cap provides improved thermal comfort conditions especially near ondol heated floor, as the cold outdoor air spreads upwards along the vertical wall before reaching occupant region near floor. This paper includes discussions on the flow and comfort distributions created by the thermal jets from the vents.
Keywords