On the potential of demand-controlled ventilation system to enhance indoor air quality and thermal condition in Australian school classrooms

Elevated air temperature and poor IAQ are common problems in classrooms, which are exacerbated in the absence or lack of proper ventilation to remove excessive heat and stale air. Although mechanical ventilation systems dominated over natural ventilation in commercial and office buildings, natural ventilation in combination with split systems air-conditioners is typically used in Australian schools. While literature highlights different sources of pollutants in classrooms, IAQ, and associated problems, split systems are given more attention to set the classroom air temperature and respond to climate. Results presented here show empirical evidence in support of the need for adequate ventilation and IAQ in classrooms, which cannot be achieved by split air-conditioners based on cooling only policy without the reference to IAQ requirements. We showed demand-controlled ventilation system with air extraction yield to reduction of Carbon dioxide and Volatile Organic Compounds. If you like to read more check our recently published paper. 

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https://www.sciencedirect.com/science/article/abs/pii/S0378778821001225?dgcid=author