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Open AccessArticle

Effects of the COVID-19 Pandemic on Indoor Air Quality and Thermal Comfort of Primary Schools in Winter in a Mediterranean Climate

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Instituto de Arquitectura y Ciencias de la Construcción, Escuela Técnica Superior de Arquitectura, Universidad de Sevilla, 41012 Sevilla, Spain
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Escuela Técnica Superior de Arquitectura, Universidad de Sevilla, 41012 Sevilla, Spain
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Author to whom correspondence should be addressed.
Academic Editor: Paola Villoria-Sáez
Sustainability 2021, 13(5), 2699; https://doi.org/10.3390/su13052699
Received: 5 February 2021 / Revised: 23 February 2021 / Accepted: 26 February 2021 / Published: 3 March 2021
(This article belongs to the Section Environmental Sustainability and Applications)
Research studies have shown the potential effects of indoor environmental quality (IEQ) on pupils’ health and academic performance. The COVID-19 pandemic has prompted renewed interest in the assessment of deficient indoor air quality (IAQ) conditions in schools and has become a priority over achieving adequate comfort conditions. Scientific studies confirm aerosols as one of the transmission routes of SARS-CoV-2 so that the possibility of airborne transmission increases in indoor environments with high occupancy, such as classrooms. As a result, international protocols and guidelines have established a requirement for educational buildings to over-ventilate with a fresh outdoor air supply. The main object of this work is to analyse the effects of the COVID-19 pandemic on thermal comfort and indoor air quality, in winter, in two classrooms of southern Spain. Thus, onsite measurements of environmental variables were conducted before and during the pandemic. Both classrooms have mechanical ventilation systems as they are within a recently built primary school (2018). Results shows a decrease of 300 ppm in CO2 weekly average values during the pandemic, when hybrid ventilation is used, and a decrease of 400 ppm when schools are naturally ventilated during all teaching hours. However, the analysis of standards shows that over 60% of hours are thermal discomfort conditions. View Full-Text
Keywords: COVID-19; IAQ; children’s school; thermal comfort; IEQ; Mediterranean climate; manual airing COVID-19; IAQ; children’s school; thermal comfort; IEQ; Mediterranean climate; manual airing
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MDPI and ACS Style

Alonso, A.; Llanos, J.; Escandón, R.; Sendra, J.J. Effects of the COVID-19 Pandemic on Indoor Air Quality and Thermal Comfort of Primary Schools in Winter in a Mediterranean Climate. Sustainability 2021, 13, 2699. https://doi.org/10.3390/su13052699

AMA Style

Alonso A, Llanos J, Escandón R, Sendra JJ. Effects of the COVID-19 Pandemic on Indoor Air Quality and Thermal Comfort of Primary Schools in Winter in a Mediterranean Climate. Sustainability. 2021; 13(5):2699. https://doi.org/10.3390/su13052699

Chicago/Turabian Style

Alonso, Alicia; Llanos, Jesús; Escandón, Rocío; Sendra, Juan J. 2021. "Effects of the COVID-19 Pandemic on Indoor Air Quality and Thermal Comfort of Primary Schools in Winter in a Mediterranean Climate" Sustainability 13, no. 5: 2699. https://doi.org/10.3390/su13052699

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