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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.

Volume content
Assessment of Indoor Environmental Quality (IEQ) in Air-Conditioned Lecture Halls of the Institutional Buildings: A Case Study for Sri Lanka

On average, a higher educational student spends 3-8 years inside an institutional building during their studies, where they tend to stay…

V. M. Jayasooriya , R. M. D. H Rajapaksha, A. W. M Ng, S. Muthukumaran
The Effects of Environment and Living Behavior on Learning Efficiency in Educational Settings

In recent years, emphasis has been placed on improving workplace productivity. Workplace productivity is defined as “results of workplace…

Kohei Onishi, Ryoichi Kuwahara
IAQ Aspects of Daycare Centers: A Systematic Review of Exposure to Particular Matter

When an infant is born, he or she begins independently breathing for the first time, meaning that immediately his or her lungs start…

Hailin Zheng, Shalika Walker, Wim Zeiler
Ammonia Removal Performance of Desiccant Wheel in a Clean Air Heat Pump (CAHP)

Clean air heat pump (CAHP) is a new technology that combines air cleaning with hygro-thermal control of ventilation air. In CAHP, a…

Ying Sheng, Lei Fang
Determining Cooling Loads in Health Care Clinical Spaces Using Historical Data

As more buildings are connected to cloud-based large data systems, there is an opportunity to learn from the data. Predictive load and…

Stet Sanborn, Peter McNally Victor Braciszewski, Eli Cowart, Armen Topakian, Ben Apolinario, Maya Salabasheva, Jun Timbang, Herb Moussa, Travis English
Health Canada’s Indoor Air Program: Risk Assessment and Research to Support Standards Development

Health Canada, a science-based organization, is the Government of Canada’s federal department responsible for maintaining and improving…

Jocelyn Moore, Francis Lavoie, Katherine Guindon-Kezis
Ventilation Effectiveness of Alternating Façade-integrated Ventilation Devices in a Dwelling

Ventilation systems are designed based on the air flow volume required to ventilate the room, the same applies to façade-integrated…

S.Auerswald, R.Devineni, T.Pflug, C.Bongs
Implementation of a Predictive Control for an All-air Ventilation System in an Educational Building

In school and office buildings, the ventilation system has a large contribution to the total energy use. A control strategy that adjusts…

Bart Merema, Dirk Saelens, Hilde Breesch
Experimental Measurements of Particles and CO2 Exhaled by a Manikin in a Hospital Room

The relation between the concentration and particle size of the human breathing and the way in which these particles are dispersed in hospital indoor…

Inés Olmedo, Fernando Peci, José Luis Sanchez-Jimenez, Manuel Ruiz de Adana
Suitability of Low-Cost Particulate Matter Sensors for Measurements in Ventilation Systems

Particulate matter (PM) is one of the most critical pollutants affecting indoor air quality (IAQ). Hence, reducing the exposure of…

Jesús Marval, Luis Medina, Juan Vallejo, Paolo Tronville
Moisture Control in Indoor Environments: When Hygric Inertia May Contribute to Deliver Better Comfort Conditions

The importance of moisture control in indoor environments is increasingly recognized Air humidity affects buman bealth and comfort, and…

Stefano Zanon, Rossano Albatici
Implementation of a User Feedback System and its Impact on User Satisfaction and Energy Demand

This paper focuses on a thermal simulation model of office rooms and experiments necessary to adequately estimate the required model…

Felix Nienaber, Alexander Kümpel, Kai Rewitz, Dirk Müller
Machine Learning for Occupancy Detection through Smart Home Sensor Data

Data from mechanical extract ventilation units of Renson Ventilation nv installed in Belgium is utilized to detect space occupancy…

Sundaravelpandian Singaravel, Steven Delrue, Ivan Pollet, Steven Vandekerckhove
Experimental Quantification of Air Volume Flow by Natural Ventilation through Window Opening

In this paper, a new mathematical model was developed experimentally to quantify the air volume flow by natural ventilation through…

Jun Jiang, Jingxin Yang, Kai Rewitz, Dirk Müller
The Influence of Balconies on the Indoor Environmental Conditions of Dwellings

The balcony is defined as an in-between architectural element that has the ability to intermediate the indoor and the outdoor…

Catarina Ribeiro, Pedro F. Pereira, Nuno M. M. Ramos, Inês Flores-Colen, Nuno Valentim
A Holistic Approach to Indoor Environmental Quality Assessment

As the industry shifts focus from indoor air quality (IAQ) to indoor environmental quality (IEQ), the need arises for its field consultants and inspectors…

Alex Reese Mavrelis, John Earman
Exterior and Total Envelope Leakage of New U.S. Low-Rise Multifamily Buildings

Envelope air leakage testing of new residential buildings is becoming more common in the United States as state energy codes and energy efficiency programs…

David Bohac, Russ Landry, Lauren Sweeney, Bob Davis, Scott Pigg, Collin Olson, Gary Nelson
Design and Preliminary Test of a Heat Pump-driven Liquid Desiccant System for a Residential Building

The purpose of this study is to suggest a heat pump-driven liquid desiccant (HPLD) air conditioning system for a residential building and…

Jae-Weon Jeong, Jae-Hee Lee, Jin-Young Ko
Automated Fault Detection Strategy on Virtual In-situ Calibration Building Energy System: Partition of Calibration Domain

Sensor errors have an important impact on the operation, control, and detection of building energy systems. Correct and reliable sensors…

Peng Wang, Jiteng Li, Sungmin Yoon, Tianyi Zhao, Yuebin Yu
Assessment Of The Performance Of Hybrid Ventilation System: Case Study Of A Multi-family Building In France

By using natural driving forces, hybrid ventilation systems reduce fan energy consumption in buildings. They are of increasing interest…

Bassam Moujalled, Gabriel Remion, Romulad Jobert, Anissia Benzekhroufa, Claire-Sophie Coeudevez, Marc Dufresne, François Demouge, Corinne Mandin
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