The Influence of the Air Temperature on the CO2 Emissions by Occupants Indoors

Abstract Data in human physiology have shown that the generation of metabolic CO 2 in the temperature interval 18-28 °C could vary only because of the temperature of the environment. Our study investigated the influence of two air temperatures (23 °C and 27 °C) on the CO 2 concentration in the classroom. Sixteen volunteers participated in the field study. It was found that the change in the room air temperature from 27 °C to 23 °C provoked a statistically proven change in the CO 2 concentration. The air relative humidity also shifts: it increased with the decrement of the room temperature.