Analysis of Indoor Particle Diffusion in Attached Jet Air Supply System

Abstract

With the change of the installation position of the radiant panel, the indoor air distribution formed by the attached jet air supply will also change, which will affect the diffusion distribution of indoor particulate matter. Through numerical simulation, the influence of indoor air distribution formed by attached jet air supply on the diffusion distribution of aerosol particles released by human body is studied. It is found that within 0 ~ 300s, 97.2% ~ 98.5% of the aerosol particles of human body jet are captured by the wall, and only a small part of fine particles exists in the air in the form of suspended solids. The final particle concentration of wall attached air supply is the lowest, and the effect of roof attached air supply is in the middle. The indoor particle concentration of wall attached air supply with deflector is higher than that of other forms at the same time in 0 ~ 300s.

Keywords

• particulate matter
• spread
• jet