CFD Simulation Analysis of Thermal Comfort in a Small Office

This study presents a 3D model of a small office to analyze and evaluate thermal comfort in Vietnam. Predicted Mean Vote index (PMV) is used to evaluate thermal comfort satisfaction. Using the CFD simulation, PMV is calculated based on the effects of temperature field, air flow, wind speed, and radiation. And, two different airflow rates of 0.4 m3s-1 and 0.56 m3s-1 were considered. The results show that, at the airflow of 0.4 m3s-1, 70% of users around the areas supply air vents are satisfied, while only most of the people in the return air vent area are not satisfied with the thermal comfort. When the airflow is 0.56 m3/s, the percentage of people satisfied with thermal comfort in areas near the supply air vent increased by 95%, and the thermal comfort in the return air vent area was also improved.