| Title |
Proposals and Performance Evaluation of Low-Velocity Wide Air Curtain for Reduction of Air Curtain Airflow |
| Authors |
김준구(Kim, Jun-Gu) ; 손유라(Son, Yu-Ra) ; 양정훈(Yang, Jeong-Hoon) |
| DOI |
https://doi.org/10.5659/JAIK.2026.42.1.299 |
| Keywords |
Computational fluid dynamics; Air curtain; Pollutant; Relative infiltration ratio |
| Abstract |
This study introduces a low-velocity wide air curtain designed to reduce discomfort caused by high-speed airflow when passing through
conventional air curtains. Computational Fluid Dynamics (CFD) simulations were conducted to compare the low-velocity wide air curtain with
a standard model, focusing on indoor temperature maintenance and pollutant-blocking performance. The results showed that the wide air
curtain produced an airflow speed several times lower than that of the standard unit, effectively reducing discomfort from high-speed airflow
for occupants. It also demonstrated better indoor temperature maintenance performance. Additionally, without a filter, the low-velocity wide air
curtain achieved a relative infiltration ratio up to three times lower than the standard air curtain, indicating excellent pollutant-blocking
capability. When a filter was applied, the relative infiltration ratio of gaseous pollutants was 9.63 times lower, while that of particulate
pollutants remained close to 0.002 or less. These findings suggest that the low-velocity wide air curtain can significantly reduce
airflow-related discomfort while improving or maintaining indoor temperature stability and pollutant-blocking performance compared to standard
air curtains. |