Analysis of ventilation system in basement parking area (Case study: Office building X)

The basement parking building in office building X is a closed space where the parking area has an inadequate ventilation system, so the air in the room feels hot. To provide a comfortable room, an analysis of the ventilation system was carried out. This ventilation system analysis is carried out to find out what causes the hot air in the room. To analyze indoor air quality, total vehicle emissions in the parking lot are calculated using air pollutant parameters, namely CO and NO2. In addition to calculating the ventilation flow rate, it measures air velocity and temperature. The results of the research conducted are that the air pollutant parameters CO and NO2 are still within the safe threshold and the vehicle emission threshold standard for health is still below 29 mg/m3 for CO and 25 mg/m3 for NO2. The solution to overcome the problem in the parking lot is to install a booster fan so that the air in the room can flow better, and the air condition is not hot. After the application of the booster fan, the average air velocity increased from 0.69 m/s to 2.88 m/s and the average temperature decreased from 34.4°C to 31.5°C.