| Title |
A Study on the Change of CO₂ Concentration in Classrooms by Computational Fluid Dynamics |
| Authors |
Yoo Sang-Kyoon ; Lee Sang-Hyeok ; Park Seung-Ik |
| Keywords |
CO₂ Concentration ; Ventilation ; Indoor Air Quality ; CFD(Computational Fluid Dynamics) |
| Abstract |
In this study, a computational simulation was conducted to verify the CO2 concentration according to the installation of ventilation system in classrooms in case of cooling mode. The simple model was validated to evaluate the accuracy of program prior to the simulation, from which the following conclusions were drawn. The mean concentration of CO2 was found to decrease as the number of ventilation diffusers increases. At the breathing height, the difference of CO2 mean concentration decreased by approximately 25ppm when the number of ventilation diffusers increased from 2 to 4, whereas the difference was about 10ppm when the number of ventilation diffusers increased from 4 to 8. This suggests that the reduction effect of the CO2 concentration was more efficient when the number of ventilation diffusers were 4 in case of this model. If there was no air flow in a classroom, the CO2 concentration increased down to the floor but the air flow was formed by the ventilation system it didn't like that. |