The conference "IAQ 2020: Indoor Environmental Quality Performance Approaches Transitioning from IAQ to IEQ”, organized by ASHRAE and AIVC, was held in Athens, Greece on 4-6 May 2022. The conference was also the 41st AIVC - 9th TightVent & 7th venticool conference. This collection contains 110 conference papers and 16 extended abstracts.

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The primary purpose of ventilation and air-conditioning system is to ensure internal comfort conditions through a continuous supply of air and maintaining the assumed indoor parameters.
Marek Borowski, Klaudia Zwolińska, Joanna Halibart
Nowadays people spend an average of 87% of their time inside buildings. Schools are a particularly delicate type of buildings for several reasons.
Francesco Babich, Annamaria Belleri, Ingrid Demanega, Clara Peretti, Luca Verdi, Gianmaria Fulici
Urbanization has led to systemic environmental factors that degrade air quality and microbial diversity, negatively impacting human health and wellbeing.
Phoebe Mankiewicz, Christina Ciardullo, Andreas Theodoridis, Elizabeth Hénaff, Anna Dyson
The present study investigates acoustic comfort in naturally ventilated residential buildings through an indoor soundscape approach.
Simone Torresin, Rossano Albatici, Francesco Aletta, Francesco Babich, Tin Oberman, Jian Kang
The steady-state concentration of occupant generated carbon dioxide (CO2) is used in some applications as an indicator of compliance with a required ventilation rate.
Constanza Molina, Benjamin Jones, Andrew Persily
This study aims at obtaining feedback from occupants of low-energy retrofitted houses concerning the indoor environmental quality (IEQ) and the building systems in their homes.
Lucile Sarran, Carsten Rode, Christian A. Hviid
The sudden global outbreak of coronavirus diseases 2019 (COVID-19) has infected over seventy million people and resulted in over one million deaths by the end of 2020, posing a significant threat to human health.
Mengtao Han, Wonseok Oh, Ryozo Ooka, Yunchen Bu, Hideki Kikumoto, Shuyuan Hu
A longitudinal study was conducted to establish metrics on perception, concentration and characterization of indoor air quality (IAQ) at a university library building.
Giobertti Morantes, Gladys Rincon, Benjamin Jones
A major challenge in the built environment is the integration of energy and indoor environmental quality in the optimization of existing buildings.
Joshua Vasudevan, Daniel Coakley, Charalampos Angelopoulos, Parag Rastogi, Olivia Nile Sobek, Graeme Jephson, Mahroo Eftekhari, Vanda Dimitriou
Respiratory infections are transmitted by droplets and droplet nuclei generated by human coughing, sneezing, and talking.
Wonseok Oh, Ryozo Ooka, Hideki Kikumoto, Mengtao Han
The materials that compose the built environment have a key role in the resulting energy demand since their thermal properties affect the heat transfer processes.
Elisavet Tsekeri, Dimitrios Xilas, Angeliki Mavrigiannaki, Dionysia Kolokotsa, Konstantinos Gobakis, Maria Kolokotroni, Francisco José Sánchez de la Flor
Ventilation in dwellings is likely to be impacted by configurations of windows and internal doors, but there is little empirical research investigating this in occupied homes.
Jessica Few, Clifford Elwell
Due to age-related physiological changes, older people are more vulnerable than young people to heat or cold conditions.
Lili Ji, Chang Shu, Abdelaziz Laouadi, Liangzhu (Leon) Wang, Michael Lacasse
The fan pressurization method is a common practice in many countries for measuring the air leakage of houses. The test results are sensitive to uncertainties in the measured pressures and airflows.
Benedikt Kölsch, Iain S. Walker
France is committed to minimizing its greenhouse gas emissions by focusing on the most energy-consuming sector, the residential and tertiary building sector.
María José Rueda López, Michel Ondarts, Gaëlle Guyot, Frédéric Wurtz, Benjamin Golly, Evelyne Gonze
Infiltration of unconditioned air through access openings and entrance doors with high recurrence can cause detrimental impacts to the energy performance, air quality and thermal comfort of buildings.
Claudio Alanis Ruiz, Bert Blocken, GertJan van Heijst, Twan van Hooff
In the UK, people spend over 90% of a day indoors.
Shih-Che Hsu, Ian Hamilton, Anna Mavrogianni, Rob Liddiard
Ventilation systems assume that the outdoor air quality is better than the indoor air quality at al times as they use outdoor air to dilute pollutants emitted by humans, activities, the building itself and other objects.
Klaas De Jonge, Kenneth Moyaert, Jelle Laverge
Humidity-based DCV systems have been widely used in France for 35 years and are considered as a reference system, including for low-energy residential buildings.
Gaëlle Guyot, Elsa Jardinier, François Parsy, Stéphane Berthin, Elise Hallemans, Emmanuel Roux, Sandrine Charrier, Marc Legrée
In building energy renovation, the notion of payback time of the investments is often presented as the only goal.
Charles-Florian Picard, Marc Abadie, Karim Limam, Jordan Litaud, Jérôme Nicolle, Adrien Dhalluin, Bénédicte Wall-Ribot