Numerical simulation of air distribution and CO2 concentration in different air supply locations in winter classroom

In winter, temperature difference between indoor and outdoor is large, and the concentration of indoor CO2 exceeds standard in the closed classroom. In order to achieve better ventilation effect, different outdoor air supply modes are explored to make up for the shortcoming of existing equipment. In this paper, by using FLUENT software, numerical simulation method is used to simulate the temperature field, velocity field changes and differences of classrooms under different air outlets. Also the concentration of CO2 distribution under this condition is simulated, and the best outlet position is obtained through simulation. With the in-depth study of airflow organization, the fresh air system will provide a more comfortable living condition for human beings and serve production and life.