Modelling of Carbon Monoxide and Carbon Dioxide in an Enclosed Car Park.

The number of vehicles in Malaysia is increasing and so does the number of underground parking spaces. However, with the increasing number of vehicles using the car park, the air pollution inside the enclosed car park also increases. Therefore, this study is aiming in monitoring the level of air pollutants, namely carbon monoxide and carbon dioxide, inside the enclosed car park, the relationship between the temperature and the concentration of carbon monoxide and carbon dioxide, the effects of the level of carbon monoxide and carbon dioxide on the human health inside the enclosed car park and to suggest possible mitigation measures to reduce the air pollution inside the car park. Using a custom built environmental station, a study was done for a period of 14 days to gather the concentration of carbon monoxide and carbon dioxide inside the enclosed car park. The study was done in the underground Kuala Lumpur City Centre (KLCC) car park from 9th June to 22nd June 2014. The collected data was done averaged for every thirty minutes every day from 0800 to 1700. From the study done, the level of carbon monoxide and carbon dioxide are higher in the weekday compared to in the weekend. Furthermore, the concentration of carbon monoxide and carbon dioxide are higher in the afternoon compared to in the morning. Temperature has minimal impact on the concentration of carbon monoxide and carbon dioxide inside the car park. The level of carbon monoxide surpassed the acceptable limit advised by the Industry Code of Practice on Indoor Air Quality 2010, while the level carbon dioxide exceeded the advised limit too, suggesting the inadequacy of ventilation inside the car park. Therefore, there is a valid health concern for the users and employees of the car park. Among the suggested mitigation measures are to construct localised ventilation at critical area inside the car park and to properly manage the traffic movement inside the car park to minimise the level of pollutants released by the vehicles.