Ventilation Performance by the Concentration Change of HCHO and TVOC with Three Models of Two Ventilation Systems and One Natural Condition

Abstract

This study has prepared three models with two different types of ventilation systems including a natural ventilation system with a solar chimney installed, a mechanical ventilation system equipped with a fan which has a volume flow rate of 0.736 m 3 /min, and one type of natural condition that depends only on infiltration. The ventilation performance of each model was then measured and evaluated by analyzing the amount of concentration change of HCHO and TVOC. The results of this analysis showed that the concentration reduction rate of HCHO and TVOC were 38.9% and 68.4%, respectively, in the natural ventilation system that had a solar chimney, while concentrations were 31.5% and 64.9%, respectively, in the mechanical ventilation system that was equipped with a fan.