Mission of the IEQ Global Alliance. The mission of IEQ-GA is to provide an acceptable indoor environmental quality (thermal environment-indoor air quality-lighting-acoustic) to occupants in buildings and places of work around the world and to make sure the knowledge from research on IEQ get to be implemented in practice.

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Presidential Column (March 2021)…In 2021, the Indoor Environmental Quality – Global Alliance (IEQ-GA) will continue to work to create a bigger worldwide alliance of scientists, indoor environmental practitioners, and researchers. In addition, we plan to work with other professional organizations on collaborative efforts…

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Favorite AIVC Newsletter, 2nd Special Issue on COVID-19

The AIVC board decided in their last (online) meeting of September 2020 to start a project to collect, discuss and disseminate information about COVID-19 in relation to ventilation and airtightness. A working group was created to define and carry out the project, with the title ‘Ventilation, airtightness and COVID-19’.

One of the outcomes of the project is the development of a number of questions and answers by working group members to address issues in relation to COVID‐19 and building ventilation in line with most recent scientific understanding. This 2nd special issue of the AIVC newsletter presents a new set of question and answers provided by the working group.

Highlights of this newsletter:

The newsletter is freely accessible here.

Favorite WHO Roadmap on good indoor ventilation in the context of COVID-19

[News item provided by AIVC] The World Health Organization (WHO) developed and published a roadmap on how to improve ventilation in indoor spaces in the context of COVID-19. The roadmap is divided into three settings – health care, non-residential and residential spaces – and takes into account different ventilation systems (mechanical or natural). The roadmap is aimed at health care facility managers, building managers, as well as those members of the general public who are providing home care or home quarantine.

The document is freely accessible here.

Favorite EP report on Air pollution and COVID-19

[News item provided by REHVA] The European Parliament’s ENVI committee published a report about the effects of air pollution on health notably COVID-19. The report highlights the importance of ventilation to increase indoor air quality and the need for proper ventilation of indoor spaces to reduce Sars-COV-2 transmission.

It also raises the question whether existing ventilation standards are sufficient to prevent the spread of SARS-CoV-2 indoors. While the report is a general overview, the fact that the ENVI Committee tackles this issue opens the possibility to raise awareness of the importance of IAQ and the definition of minimum IAQ requirements in building policies.

Read the full report.

Favorite The Renovation wave should kick-start a just healthy building transition in Europe

Buildings should serve the health, comfort, and wellbeing of occupants. We spend +90% of our lives indoor, thus indoor environment quality (IEQ) has a major impact on our health and life. Unfortunately, these basic principles are often ignored when constructing buildings or developing EU policies targeting energy renovation.

REHVA experts – scientists and practitioners in the field of building services engineering – have been advocating healthy indoor climate along energy efficiency for decades. We seal our buildings for energy performance so we must pay particular attention on indoor air quality. Defining minimum IEQ criteria to be reached during deep energy renovation should be widely acknowledged and practiced in policies and plans for deep energy renovation.

Read the complete article written by Anita Derjanecz on REHVA Blog

Favorite We need new criteria for ventilation design

The need for good ventilation has been mainly justified with health reasons, but are there reliable health criteria to rely on when defining appropriate ventilation rates?

Göran Stålbom published a good summary about the history of ventilation criteria in the October 2020 newsletter of Swesiaq, the Swedish indoor air organization. The bottom line was that there are no scientific, widely accepted criteria for ventilation rates. The sizing practice has been largely based on various guideline values or on practical experience, meaning that at the end of the day proper ventilation performance may depend on the experience of the designer.

Read the complete article written by Olli Seppänen on REHVA Blog.

Favorite 1 April 2021, AIVC Webinar – Building ventilation: How does it affect SARS-CoV-2 transmission?

The Air Infiltration and Ventilation Centre and the IEA EBC Annex 86 “Energy Efficient Indoor Air Quality Management in Residential Buildings” are organizing the webinar Building ventilation: How does it affect SARS-CoV-2 transmission? to be held on April 1st, 2021 at 17:00-18:30 CET. The webinar will address the potential mitigating role of building ventilation in the spread of the COVID-19 pandemic.

Presentations and Speakers:

  • Introduction, Arnold Janssens – chair of AIVC WG COVID-19, Ghent University, Belgium
  • The Role of Building Ventilation in Indoor Infectious Aerosol Exposure, Andrew Persily – NIST, USA
  • Modelling uncertainty in the relative risk of exposure to the SARS-CoV-2 virus by airborne aerosol transmission, Cath Noakes – University of Leeds, UK
  • Field measurements of aerosol exposure in indoor environments, Wouter Borsboom – TNO, Netherlands
  • Ventilation system design and the risk areas for spreading airborne contaminants in office buildings, Alireza Afshari – Aalborg University, Denmark

For further information on registration etc. please visit: https://www.aivc.org/event/1-april-2021-webinar-building-ventilation-how-does-it-affect-sars-cov-2-transmission

Favorite AIVC Newsletter, Special Issue COVID-19

The AIVC board decided in their last (online) meeting of September 2020 to start a project to collect, discuss and disseminate information about COVID-19 in relation to ventilation and airtightness. A working group was created to define and carry out the project, with the title ‘Ventilation, airtightness and COVID-19’.  The first special issue of the AIVC newsletter is a first outcome of the project.

Highlights of this newsletter:

If you have specific questions related to COVID-19 and ventilation, please let us know by writing an email to info@aivc.org.

The newsletter is freely accessible in English and in French.

Favorite ASHRAE COVID-19 upcoming online courses

The American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) is organizing the following COVID-19 related learning courses in January & February 2021:

Click on the links above to know more.