Experimental Study to Analyze the Parameters Affecting the Cabin Air Quality

The quality of the air inside a vehicle is measured by cabin air quality. Cabin air quality is important not only for comfort, but also for safety. For decades, scientists have studied the air quality outside of automobiles. Because cars absorb emissions from adjacent vehicles, pollutant levels inside vehicles are frequently greater. Pollutants enter the car interior through air vents and other openings because vehicles are not constructed to be airtight. The in-cabin microenvironment has become a significant source of exposure to numerous air pollutants, such as particulate matter (PM), volatile organic compounds (VOCs), semi-volatile organic compounds (SVOCs), carbon monoxide, and nitrogen oxides, etc. There are various physical parameters such as filters, cabin temperature, air exchange rate, cooling rate, direction of flow of air inside the vehicle cabin, and vehicle speed that can affect the cabin air quality and purification time. The air exchange and its rate being of highest importance. The paper consists of various experimental results to check the effect of these parameters in improving the cabin air quality. The paper consists of data related to PM 2.5 which is one of the most significant contributor in hampering the cabin air quality. The paper clearly demonstrate the procedure followed to create high concentration of PM 2.5 inside the vehicle cabin, and how that PM 2.5 concentration value inside the vehicle cabin be reduced by changing air exchange rate, cooling rate, changing the kind of filter in HVAC unit, changing direction of air flow inside the vehicle cabin or changing the mode of air intake as well as the temperature inside the vehicle cabin