Effect of Air Outlet Angle on Air Distribution Performance Index

Abstract

In this paper a numerical study of velocity and temperature distribution in air conditioned space have been made. The computational model consists of the non-isothermal 3-D turbulent with (k-ε) model. The numerical study is made to conduct air distribution in a room air-conditioned space with real interior dimensions (6×4×3)m and to analyze the effect of changing angle of grille vanes on the flow pattern, velocity, and temperature distribution in the room under a set of different condition, and under a supply air temperature of 16˚C to examine the final result on air distribution performance index (ADPI). The results show a significant effect within the change of supply air angle, the maximum air distribution performance index (ADPI) is 52% when air change per hour (ACH) is equal to 10 at 16˚C inlet temperature with angle (15˚ down), and the minimum value of (ADPI) is 20% when ACH is equal to 15 at 16˚C inlet temperature and angle (degree).

Keywords

• Air Outlet Angle
• Air Distribution Performance Index (ADPI)
• k- model