Influence of Meteorological factors and Distribution of Particulate Matter at Underground Parking

DOI: 10.14416/j.ind.tech.2024.04.008

Abstract

This research focused on studying the amount of fine particulate matter (PM_2.5 and PM₁₀) generated from vehicle emissions at the underground parking area in Srinakharinwirot University. The methodology was performed by measuring the amount of particulate matter in underground basement 1 (floor A) and underground basement 2 (floor B) from Monday to Friday. Moreover, environmental factors, such as, humidity and temperature were measured. The result found that the average concentration of PM₁₀ ranged from 156.3-225.4 µg/m³, while PM_2.5 ranged from 15.5-45.9 µg/m³. At some measurement points, the values exceeded the Air Quality standards. Both particulate matter types were found to be highest between 6.00-7.00 am and gradually decreased and increased again at 3.00-6.00 pm, respectively. The high particulate matter concentrations were identified at the entrances and exits near the demonstration school (Prasanmit) and some areas where the air circulation system was inadequate. The wind speed measurement at the air vents of the ventilation system inside the underground parking area all 36 points per floor revealed insufficient air volume compared to the calculated requirements. Short-term solutions proposed include providing dust protection equipment for individuals working in the underground parking area. Long-term solutions involve implementing urgent mist spraying during heavy traffic hours and installing fans at specific points within the underground parking facility to enhance air circulation. Additionally, the installation of additional exhaust fans to improve overall air ventilation efficiency is recommended.