Mixed-mode ventilation
The Illustrated Guide to Mechanical Building Services, Third Edition (BG 31/2017), by David Bleicher, published by BSRIA in 2017, states in relation to mixed-mode ventilation: ‘Mixed-mode is a term that describes a system which combines natural and mechanical ventilation. The mechanical element can be extract, supply or a combination of the two, however it is typically a supply system. The mechanical element ensures that an adequate air flow is maintained when natural ventilation is inadequate. This is particularly useful at night when it can be used to purge heat from the building in readiness for the next day (see diagram opposite). Mixed-mode systems have become increasingly popular in recent years. This is largely because greater reliance can be placed on them to provide ventilation in comparison to a natural ventilation system, while still providing the benefits of a natural ventilation system when weather conditions are suitable.’
--BSRIA
[edit] Related articles on Designing Buildings Wiki
Featured articles
Check out some of the best features and news from Designing Buildings as well as key stories from around the web.
Cut electricity bills to power growth
Coalition sends joint letter to the Chancellor.
Gasholders: a history in pictures. Book review.
Recognition, influence and growth
SocEnv identifies three strategic pillars in new strategy to 2045.
Discover the future of roofing, cladding and insulation.
New guidance for professional practice, cultural change and regulation in social housing.
The heritage of nuclear and conventional power stations.
New measures to stop people being ripped off
Government to protect families from cowboy builders and aggressive bailiffs.
New Futurebuild showcase brings an innovation-first approach.
National Planning Policy Framework
Understanding the 2026 changes.
ECA's public affairs priorities
Member consultation opens to shape priorities for 2027 to 2030.
Dutyholder responsibilities from 1 July 2026.
Where performance meets practice
The Building Envelope Stage at UKCW Birmingham.