Conference Paper

Proceedings of Building Simulation 2019: 16th Conference of IBPSA

     

Comparative Study on Pollution-block Performance of Ceiling-supply Air Curtain System for Commercial Building Entrance

Ran Duan 1, Jiagen Liu 2
1 THUPDI, China, People's Republic of
2 THAD,China, People's Republic of

DOI: https://doi.org/10.26868/25222708.2019.210532
Abstract: Air curtain is often used as a dynamic barrier to separate indoor and outdoor environments. This investigation evaluated the pollution-block performance of ceilingsupply air curtain system with varying air supply angles, volume flow rates, and velocities, using a validated computation fluid dynamics (CFD) model. The study found that the pollution-block performance of different air supply angles of air curtain was related with air supply velocity. The study predicted that with a constant air supply velocity, varying air supply volume flow rate had little impact on preventing outdoor pollution entering the building. For ceiling-supply air curtain, the recommended air supply velocity should be large enough to ensure the supply air to strike the floor before it is blown away by the outdoor wind at the entrance.
Keywords: Indoor air quality, air distribution, air pollution, CFD
Pages: 650 - 656
Paper:

BS2019_210532