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The 40th AIVC Conference "From energy crisis to sustainable indoor climate - 40 years of AIVC", was held in Ghent, Belgium, 15-16 October 2019. Contains 128 papers and/or summaries.

Volume content
Minimising the influence of the stack effect and wind on the operation of mechanical exhaust ventilation systems

Ventilation systems play an important role in providing a good indoor air quality in dwellings. Mechanical exhaust ventilation systems implement natural…

Romy Van Gaever, Samuel Caillou, Sébastien Pecceu
Multi-Objective Optimization of Energy Saving and Thermal Comfort in Thermo Active Building System based on Model Predictive Control

Japan will have to further reduce CO2 emissions to meet its obligations under the Paris Agreement negotiated at the 2015 United Nations Climate Change…

Ogawa Yohei, Shiraishi Yasuyuki
Two Case Studies on Ventilation for Indoor Radon Control

Health Canada’s cross-Canada residential radon survey report from 2012 demonstrated that roughly 7% of Canadian homes contain radon levels above the…

Justin Berquist, Liang Grace Zhou, Jeffrey Whyte, Yunyi Ethan Li, Mark Vuotari, Gang Nong
Influence of Ventilation on Radon Concentration in a Study Case in Spain

Radon gas is a well-known building´s pollutant which can affect negatively people´s health (WHO, 2009). Radon´s source is the soil underneath buildings.…

Pilar Linares-Alemparte, Sonia García-Ortega
Energy and Indoor Air Quality Analysis of Mixed Air and Displacement Ventilation Systems

Indoor pollutants and particles pose a threat to human health as people spend 90% of their time in indoor spaces. A proper ventilation system should be able…

Walid Chakroun, Sorour Alotaibi, Kamel Ghali, Nesreen Ghaddar
Investigation of The Combined Effect of Indoor Air Stability and Displacement Ventilation on Pollutant Transport in Human Breathing Microenvironment

The ventilation system removes pollutants effectively, and the resultant vertical temperature difference in the room greatly affects the indoor air…

Xiaorui Deng, Guangcai Gong
Indoor environment and adverse health symptoms among children under home damp conditions

Building dampness and mouldy indoor environments are associated with the increase of approximately 30-50% in variety of respiratory and asthma-related…

Kenichi Hasegawa, Naoki Kagi, Nobuhiro Kanazawa, Jun Sakaguchi, Naohide Shinohara, Yasuyuki Shiraishi, Teruaki Mitamura, Jun Fukushima
Relationship between indoor allergen and occupants’ allergic symptoms before and after moving in the house with the countermeasure against allergy

Allergic symptoms are closely related to indoor allergens, such as airborne particulate matter, fungi, and house dust mite. This paper introduces a central…

Teruaki Mitamura, Kunio Dobashi, Hiroki Harasawa
Learning Performance in Odor Environment with aroma oils: Influence of Odor of Essential Oils on Learning Performance in Classroom

There is no doubt that odor is also an important factor to evaluate indoor air quality. Since the olfactory system was proven to be closely related to the…

Aya Eto, Narae Choi, Toshio Yamanaka, Akihisa Takemura, Tomohiro Kobayashi
A large-scale longitudinal indoor air quality study: is low-cost sensor deployment a viable approach?

To date, the vast majority of indoor air quality studies have relied on repeated visits to dwellings to obtain data derived from short-term monitoring…

James A. McGrath, Alison Connolly, Miriam A. Byrne
An argument for a reality check in the ventilation industry: We still have an energy crisis, in practice, and are not generally, in practice, achieving better indoor climate

In 2017 the Danish Building and Property Agency started a project titled “Avoiding energy waste in ventilation systems” by tracking the actual energy use in…

Sergio George Fox
Status of Air filter energy performance and product characteristics

Throughout the certification process of air filters, the major technical characteristics are evaluating. Both theoretical models and experimental methods,…

Kiyan Vadoudi, Gregory Kelijian
Influence of Building Envelope’s Solar Reflectivity, Wind Speed and Building Coverage Ratio on Urban Heat Environment

In recent years, especially, the climate change (CC) and urban heat island (UHI) effects are becoming serious problems, affecting people’s life and health,…

Haruto Kitakaze, Jihui Yuan, Toshio Yamanaka, Tomohiro Kobayashi
The influence of external environment characteristics on the heating and cooling load of super-tall residential building

Upper floors of super-tall residential buildings have different characteristics of the exterior environment as compared to their low floors or low-rise…

Hyoeng-Tae Kim, Hee-Gang Kim, Chang-Ho Jeong, Myoung-Souk Yeo
Improvement Method of Thermal Environmental Near Windows During Heating Period -Thermal and Air Flow Characteristics of Two-Dimensional Jet from Breeze Line Diffuser in Free Field

The perimeter space near windows usually has some problems with the thermal environment which is easily affected by heat transfer and radiation from windows…

Shaoyu Sheng, Toshio Yamanaka, Tomohiro Kobayashi, Jihui Yuan, Masahiro Katou, Saori Yumino
Airtightness and energy impact of air infiltration in residential buildings in Spain

Addressing the airtightness of the building envelope is key to achieve thermal comfort, good performance of ventilation systems and to avoid excessive…

Irene Poza-Casado, Alberto Meiss, Miguel Ángel Padilla-Marcos, Jesús Feijó-Muñoz
Exist’air: airtightness measurement campaign and ventilation evaluation in 117 pre-2005 French dwellings

Between 2017 and 2018, the Centre for Studies and Expertise on Risks, the Environment, Mobility and Planning (Cerema) organized an airtightness measurement…

Sylvain Berthault, Lucille Labat, Cédric Delahais, Elodie Héberlé, Sabrina Talon
New findings on measurements of very airtight buildings and apartments

The trend in European countries, such as Belgium, France and Germany is that the quality of the airtightness of the building envelope is getting better and…

Stefanie Rolfsmeier
Comparison between infiltration rate predictions using the divide-by-20 rule of thumb and real measurements

Across different territories there are various normative models for assessing energy demand of domestic dwellings, which use simplified approaches to…

Alan Vega Pasos, Xiaofeng Zheng, Mark Gillott, Christopher J. Wood
On the experimental validation of the infiltration model DOMVENT3D

Buildings represent approximately 40% of global energy demand and heat loss induced by uncontrolled air leakage through the building fabric can represent up…

Alan Vega Pasos, Xiaofeng Zheng, Benjamin Jones, Mark Gillott, Christopher J. Wood
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