Electrostatic filters
Illustrated Guide to Ventilation (BG 2/2009), compiled by Kevin Pennycook and published by BSRIA in 2009, states: ‘Electrostatic filters or electronic air cleaners can be highly efficient in filtering out particulate contaminants like smoke, dust and pollen. There are three basic types: ionisation plate, charged media non-ionising, and the charged media-ionising type. The most common type of electrostatic precipitator is the ionising type. Thin wires suspended in the air stream are charged with a high positive voltage. The positive ions created in the ionising field become attached to particles which then pass into the collecting plate section. This section consists of a series of parallel plates, with alternative plates positively charged and the other plates at ground potential. The electric field forces the charged particles on to the oppositely charged plates. The retention of particles on the collector plates is by a combination of electrical and intermolecular adhesion. To improve the overall efficiency, a filter is often placed downstream of the collector plates to capture large agglomerated particles shed from the plates.’
--BSRIA
[edit] Related articles on Designing Buildings
Featured articles and news
Gregor Harvie argues that AI is state-sanctioned theft of IP.
Heat pumps, vehicle chargers and heating appliances must be sold with smart functionality.
Experimental AI housing target help for councils
Experimental AI could help councils meet housing targets by digitising records.
New-style degrees set for reformed ARB accreditation
Following the ARB Tomorrow's Architects competency outcomes for Architects.
BSRIA Occupant Wellbeing survey BOW
Occupant satisfaction and wellbeing tool inc. physical environment, indoor facilities, functionality and accessibility.
Preserving, waterproofing and decorating buildings.
Many resources for visitors aswell as new features for members.
Using technology to empower communities
The Community data platform; capturing the DNA of a place and fostering participation, for better design.
Heat pump and wind turbine sound calculations for PDRs
MCS publish updated sound calculation standards for permitted development installations.
Homes England creates largest housing-led site in the North
Successful, 34 hectare land acquisition with the residential allocation now completed.
Scottish apprenticeship training proposals
General support although better accountability and transparency is sought.
The history of building regulations
A story of belated action in response to crisis.
Moisture, fire safety and emerging trends in living walls
How wet is your wall?
Current policy explained and newly published consultation by the UK and Welsh Governments.
British architecture 1919–39. Book review.
Conservation of listed prefabs in Moseley.
Energy industry calls for urgent reform.