Evaluating Indoor Carbon Dioxide Concentration and Ventilation Rate of Research Student Offices in Chinese Universities: A Case Study

This work provides a case study on the indoor environment and ventilation rate of naturally ventilated research student rooms in Chinese universities. In measured room, air temperature, relative humidity carbon dioxide (CO2) concentration were monitored during heating period for 4 weeks. The number occupants, occupied time room window/door-opening cases simultaneously recorded. Results showed was an average 12.0 h each day. Due to large outdoor temperature difference season, occupants’ adaption environment, occupants seldom open windows/doors ventilation. Air exchange only by infiltration cannot meet requirement. As result, 77.6% CO2 data day exceeded 1000 ppm time. fact, according data, it observed that window/door opening could effectively decrease concentration. Therefore, intermittent or CO2-based demand-controlled facilities suggested improving quality such rooms. Additionally, special attention should be paid other possible pollution.