| Title |
A Design Improvement Procedure of Mechanical Ventilation System for A Large Underground Parking Lot by Numerical Analysis |
| Authors |
Woo-Pyoung Park ; Jinkyun Cho ; Jinho Kim |
| DOI |
https://doi.org/10.6110/KJACR.2020.32.3.146 |
| Keywords |
지하주차장; 기계환기; 설계성능개선방법; 전산유체역학; 요구환기풍량 Underground parking lot; Mechanical ventilation; Design improvement procedure; CFD; Required air flow rate |
| Abstract |
The design improvement of mechanical ventilation systems (which usually operate 24/7 year round) for underground parking lots is critical for human health and energy. In this paper, a mechanical ventilation system was re-designed and improved to solve the problems of ventilation performance and high fan energy use in a large underground parking lots. The inlets/outlets are at the ground level of the building, and the dilution method is used to calculate the required exhaust and supply ventilation rates. Two types of fan room for vent tower models (with sirocco fan and airfoil fan) were constructed and simulated under seven design procedures using computational fluid dynamics (CFD). For the mechanical ventilation of an underground parking lot with an airfoil fan, the ranges of the computed air flow rate and ventilation efficiency are consistent with the requirements of ventilation performance and design criteria. This system optimization procedure of the ventilation system that has been re-designed is effective in meeting the required air flow rate in underground parking lots. |