NILIM and BRI of Japan, together with the Air Infiltration and Ventilation Centre (AIVC) organised a workshop entitled “Towards high quality, low-carbon ventilation in airtight buildings" held on 18-19 May 2023 in Tokyo, Japan.

The 2-day workshop provided the opportunity to Japanese researchers and engineers, as well as international experts visiting Japan, to present and discuss recent developments in relation to ventilation and airtightness. The workshop was organized in 5 thematic sessions.

Ventilation represents a very high part of the building’s energy load. Increased envelope protection combined with the significant increase of the ambient temperature, turn ventilation into one of the major energy consuming uses requiring the development and use of innovative and efficient new technologies to minimise the ventilation energy load. In parallel, the increase of the ambient temperature induced by global and local overheating increases the cooling load of buildings and decreases the cooling potential of ventilation

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. This improves personal comfort, health and energy efficiency of the entire heating, ventilation and air-conditioning (HVAC) system substantially. Personalized ventilation will also protect against cross contaminations, which are critical in open plan offices and workplaces with close distance.