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CO2 Concentrations and Thermal Comfort Analysis at Onsite and Online Educational Environments
Alba Alegría-Sala1, Elisenda Clèries Tardío2, Lluc Canals Casals1
1Enginyeria del Medi Ambient (ENMA), Department of Project and Construction Engineering (DPCE), Universitat Politècnica de Catalunya (UPC), 08028 Barcelona, Spain.
International Journal of Environmental Research and Public Health
|December 11, 2022
Summary
Indoor air quality and thermal comfort are often inadequate in university classrooms, especially with high occupancy, potentially increasing SARS-CoV-2 transmission. Conditions at home were perceived as better by students compared to university study spaces.
Area of Science:
- Environmental Science
- Public Health
- Building Science
Background:
- High occupancy in educational buildings like classrooms can increase SARS-CoV-2 transmission, particularly with poor indoor air quality.
- Universities implement ventilation strategies, but older buildings often lack adequate systems to meet air quality standards.
- Assessing indoor environmental conditions in academic settings is crucial for occupant health and comfort.
Purpose of the Study:
- To quantify indoor air quality (IAQ) and thermal comfort in university classrooms.
- To compare IAQ and thermal comfort in university settings with students' homes.
- To evaluate student perceptions of comfort in both environments.
Main Methods:
- Monitoring of temperature, CO2 concentration, and relative humidity in university classrooms.
- Surveys of students regarding their comfort perceptions in classrooms.
- Monitoring and surveys of students' home study environments during exam periods.
Main Results:
- IAQ parameters (CO2, temperature, relative humidity) frequently did not meet recommended standards in monitored university spaces.
- These IAQ factors were more critical in university settings due to higher occupancy levels.
- Student surveys indicated a preference for home study environments over university classrooms regarding comfort.
Conclusions:
- University classrooms face significant IAQ and thermal comfort challenges, exacerbated by high occupancy.
- Existing ventilation measures may be insufficient in older educational facilities.
- Addressing these environmental factors is essential to improve student well-being and potentially mitigate airborne disease transmission on campuses.
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