Comparison of Air Distribution of Induced Ventilation System's Different Exhaust Way in Underground Garage

Abstract

Induced ventilation system with the advantages of simple system and convenient installation has been widely used in China's underground garage ventilation design and showed an increasing trend. In this paper, the numerical simulation is done to the different air exhaust way of induction ventilation system of an underground garage. The two air exhaust ways are upper exhaust and upper 1/3 and lower 2/3. By analyzing airflow organization and pollutant concentration of the two exhaust ways, we can derive that upper 1/3 and lower 2/3 air exhaust way is conducive to the discharge of pollutants.

Jet fans in the underground car parking areas and virus transmission

“…Shang and Xing 44 compared two induced ventilation systems in an underground garage with different ways of air exhaust. The two air exhaust ways were upper exhaust and upper 1/3 and lower 2/3.…”

Analysis of Jet Fan Ventilation System installed in an Underground Car Park with Partition Walls

“…Effects of flow generated by jet fans cause dilution of the pollution peaks, but removal efficiency depends on the distance between jet fans [6]. Extraction position has great influence on the removal of pollutants from underground car parks [7]. CO concentration in the breathing zone has a strong relation to the fan position [8].…”