TC 4.3 -
Ventilation Requirements & Infiltration
Want to become
involved in ventilation, infiltration, and indoor air quality (IAQ)
issues at the Society level? Please read through this web site and
attend the physical-reality general and subcommittee meetings of TC 4.3
at the ASHRAE Annual and Winter Meetings!
TC 4.3 is concerned
with ventilation requirements and the analysis of
infiltration, airflow around buildings, exhaust, and the re-entry of
exhaust, including their integration interactions with indoor air
quality and energy calculations for buildings and HVAC system design
and operation performance and energy consumption.
TC 2.5 merged into
July 2003 TC
4.3 moved to Section 5 and renumbered TC 5.12.
January 2006 TC
5.12 moved back to Section 4 and renumbered TC 4.3.
4.3's old scope: TC 4.3 is
concerned with (1) the identification and evaluation of ventilation
requirements for residential, commercial and institutional occupancies,
and (2) the determination of air leakage in structural components and
assemblies as affected by thermal pressure differentials.
2.5's old scope: TC 2.5 is
concerned with predicting the air flow around buildings and its effects
on building and mechanical system performance. Issues include the
impacts of wind and thermally driven air flows on: the effectiveness of
mechanical systems and smoke pollutants relative to building intakes
and exhausts, air flow through apertures in the building envelope, and
convective heat transfer from building surfaces.
Last updated January 19, 2011