The Air Infiltration and Ventilation Centre (AIVC) in collaboration with the ASHRAE Singapore Chapter (ASC) organised a 1 ½ -day workshop held on April 18-19, 2024 in Singapore. The workshop was led by experts from the AIVC and the ASHRAE Singapore Chapter.

In recent years ventilation system design has seen a shift from design methods based on prescribed flow rates and standard lay outs, towards performance-based approaches which offer opportunities for smart ventilation concepts by considering what ventilation should achieve in terms of indoor air quality and energy efficiency.

The 44^th AIVC conference "Retrofitting the Building Stock: Challenges and Opportunities for Indoor Environmental Quality" was held on 9 & 10 October 2024 in Dublin together with the 12^th TightVent conference and the 10^th venticool conference. There were 180 participants from 26 countries.

Personal Environmental Control System (PECS) with the functions of heating, cooling, ventilation, lighting and acoustic has advantages of controlling the localized environment at occupant’s workstation by their preference instead of conditioning an entire room.

As it is now a well-known fact that air leakage can significantly impact the building energy performance, more and more countries are introducing requirements or recommendations on new buildings’ airtightness level in their energy performance regulation.

A series of Ventilation Information Papers (VIPs) is being developed and published by the AIVC to present national trends and regulations on building and ductwork airtightness. This webinar will explore the building and ductwork airtightness practices in three countries: China, New Zealand, and Japan.

In many parts of the world, outdoor air quality is so poor that it is better to avoid ventilation with outdoor air. In such cases, the alternative is to substitute ventilation with air cleaning to maintain high indoor air quality.

Indoor carbon dioxide concentrations have been measured and discussed in the context of building ventilation and indoor air quality (IAQ) for more than 100 years. In recent decades they have been proposed as an easy way to evaluate the adequacy of ventilation, even to estimate ventilation rates, as well as an indicator of IAQ.