Marey, Ahmed, Raafat, Rana and Goubran, Sherif (2023) Safeguarding Health and Well-Being in University Classrooms: Estimating CO2 Concentration Based on Air Permeability. In: Environmental Design Research Association (EDRA) 54th Conference, 20-23 June 2023, Mexico City. (In Press)
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Abstract
Indoor air quality (IAQ) in educational facilities is an important factor in student's well-being and academic achievement. Window opening and air infiltration are commonly used as the sole ventilation sources in current educational buildings, which can lead to unhealthy levels of indoor pollutants and energy waste. In this paper, the impact of infiltration and exfiltration on CO2 concentrations was evaluated in three studios at the architecture department in the American University in Cairo by the means of fan pressurization testing and onsite CO2 PPM concentration measurements. The monitoring protocol took place under normal operation schedule in which number of people in the space was recorded along with other parameters such as manual airing status by window opening. Airtightness was then assessed using pressurization test method which was carried out in these classrooms to assess air infiltration caused by envelope leakages. Two sets of linear regression models were developed to estimate CO2 concentration in the space: one for when windows are closed and another when they are opened. The two sets were then compared to understand the effect of airtightness on CO2 concentration. The findings indicated that ventilation cannot rely solely on air infiltration, and that particular controlled ventilation systems should be employed to optimize IAQ while avoiding excessive energy loss.
| Divisions: | Concordia University > Gina Cody School of Engineering and Computer Science > Building, Civil and Environmental Engineering |
|---|---|
| Item Type: | Conference or Workshop Item (Paper) |
| Refereed: | Yes |
| Authors: | Marey, Ahmed and Raafat, Rana and Goubran, Sherif |
| Date: | 21 March 2023 |
| Keywords: | Indoor Air Quality; Airtightness; CO2 Concentration Decay; Learning Spaces; Ventilation |
| ID Code: | 992509 |
| Deposited By: | Ahmed Marey |
| Deposited On: | 20 Jul 2023 19:57 |
| Last Modified: | 15 Jul 2024 00:00 |
References:
Chen, C., & Zhao, B. (2011). Review of relationship between indoor and outdoor particles: I/O ratio, infiltration factor and penetration factor. Atmospheric Environment, 45(2), 275–288. https://doi.org/10.1016/j.atmosenv.2010.09.048Claude-Alain R., & Foradini F. (2002). Simple and Cheap Air Change Rate Measurement Using CO 2 Concentration Decays . Int J Vent. 1(1):39–44.
D'Ambrosio Alfano F. R., Dell'Isola M., Ficco G., Tassini F. (2012). Experimental analysis of air tightness in Mediterranean buildings using the fan pressurization method, Build. Environ. 53.
Eom, Y. S., Park, B. R., Shin, H. W., & Kang, D. H. (2021). Evaluation of outdoor particle infiltration into classrooms considering air leakage and other building characteristics in korean schools. Sustainability (Switzerland), 13(13). https://doi.org/10.3390/su13137382
International Organization for Standardization (2015), ISO 9972-Thermal Performance of Buildings - Determination of Air Permeability of Buildings – Fan Pressurization Method.
Kalamees T. (2007). Air tightness and air leakages of new lightweight single-family detached houses in Estonia, Build. Environ. 42.
Persily A. K., & Linteris G. T. (1983). A comparison of measured and predicted infiltration rates, ASHRAE Trans. 89.
Poza-Casado, I., Gil-Valverde, R., Meiss, A., & Padilla-Marcos, M. Á. (2021). Impact of air infiltration on iaq and ventilation efficiency in higher educational classrooms in spain. Sustainability (Switzerland), 13(12). https://doi.org/10.3390/su13126875
Russell, M., Sherman, M., & Rudd, A. (2007). Review of Residential Ventilation Technologies. HVAC&R Research, 13(2), 325–348. https://doi.org/10.1080/10789669.2007.10390957
SAGE EMG. Role of Ventilation in Controlling SARS-CoV-2 Transmission (2020). London: UK Scientific Advisory Group for Emergencies (SAGE); Available from: https://www.gov.uk/government/publications/emg-role-of-ventilation-in-controlling-sars-cov-2-transmission-30-september-2020
Sfakianaki A., Pavlou K., Santamouris M., Livada I., Assimakopoulos M. N., & Mantas P., et al. (2008). Air tightness measurements of residential houses in Athens, Greece, Build. Environ. 43.
Sherman, M. H. (1987). Estimation of Infiltration from Leakage and Climate Indicators. Energy and Buildings. https://doi.org/10.1016/0378-7788(87)90008-9
Stabile, L., Dell’Isola, M., Frattolillo, A., Massimo, A., & Russi, A. (2016). Effect of natural ventilation and manual airing on indoor air quality in naturally ventilated Italian classrooms. Building and Environment, 98, 180–189. https://doi.org/10.1016/j.buildenv.2016.01.009
Stephens B., & Siegel J. A. (2012). Penetration of ambient submicron particles into single-family residences and associations with building characteristics, Indoor Air 22.Al horr, Y., Arif, M., Katafygiotou, M., Mazroei, A., Kaushik, A., & Elsarrag, E. (2016). Impact of indoor environmental quality on occupant well-being and comfort: A review of the literature. International Journal of Sustainable Built Environment, 5(1), 1–11. https://doi.org/10.1016/j.ijsbe.2016.03.006
ASHRAE. (2017). ASHRAE Handbook of Fundamentals. In Atlanta, GA.
En 13779. (2007). Ventilation for buildings — Performance requirements for ventilation and. 3, 72.
Eom, Y. S., Park, B. R., Shin, H. W., & Kang, D. H. (2021). Evaluation of outdoor particle infiltration into classrooms considering air leakage and other building characteristics in korean schools. Sustainability (Switzerland), 13(13). https://doi.org/10.3390/su13137382
Gyimah, K., Abanyie, S., & Koranteng, C. (2019). a Review on Approaches and Tools Used in Assessing Indoor Environmental Quality. Journal of Building Performance, 10(1), 68–78.
Hedrick, R. L., Thomann, W. R., Aguilar, H., Damiano, L. A., Darwich, A. K. H., Gress, G., Habibi, H., Howard, E. P., Petrillo-groh, L. G., Smith, J. K., Williams, S. D., Doppel, P. L., Davis, H. D., Fisher, F. J., Morris, W. E., Olsen, J. W. W., Hall, R. L., Reindl, D. T., Anderson, J. R., … Graef, P. T. (2010). Ventilation for acceptable indoor air quality. ASHRAE Standard, 8400(STANDARD 62.1), 1–70.
Poza-Casado, I., Gil-Valverde, R., Meiss, A., & Padilla-Marcos, M. Á. (2021a). Impact of air infiltration on iaq and ventilation efficiency in higher educational classrooms in spain. Sustainability (Switzerland), 13(12). https://doi.org/10.3390/su13126875
Poza-Casado, I., Gil-Valverde, R., Meiss, A., & Padilla-Marcos, M. Á. (2021b). Impact of Air Infiltration on IAQ and Ventilation Efficiency in Higher Educational Classrooms in Spain. Sustainability. https://doi.org/10.3390/su13126875
Russell, M., Sherman, M., & Rudd, A. (2007). Review of Residential Ventilation Technologies. HVAC&R Research, 13(2), 325–348. https://doi.org/10.1080/10789669.2007.10390957
Sherman, M. H. (1987). Estimation of Infiltration from Leakage and Climate Indicators. Energy and Buildings. https://doi.org/10.1016/0378-7788(87)90008-9
Stabile, L., Dell’Isola, M., Frattolillo, A., Massimo, A., & Russi, A. (2016). Effect of natural ventilation and manual airing on indoor air quality in naturally ventilated Italian classrooms. Building and Environment, 98, 180–189. https://doi.org/10.1016/j.buildenv.2016.01.009
Tham, K. W. (2016). Indoor air quality and its effects on humans—A review of challenges and developments in the last 30 years. Energy and Buildings, 130, 637–650. https://doi.org/10.1016/j.enbuild.2016.08.071
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