Roll filter
Illustrated Guide to Ventilation (BG 2/2009), compiled by Kevin Pennycook and published by BSRIA in 2009, states: ‘A roll filter comprises a roll of filter medium which is fed across the face of a filter frame, while the dirty medium is rewound onto a roll at the bottom. When the roll is exhausted the complete dirty roll is disposed of and a replacement installed. The medium is usually of fibre with a viscous coating. Alternatives are dry media or metal mesh panels linked into a continuous curtain that intermittently passes through an adhesive (oil bath) reservoir. Roll filters do not have a positive sealing mechanism, so there is the risk of by-pass of unfiltered air.’
--BSRIA
[edit] Related articles on Designing Buildings
Featured articles and news
From Chaucer to Fawlty Towers.
Electrotechnical excellence, now open for entries.
Net zero electricity grids BSRIA guide NZG 5/2024
Outlining the changes needed to transition to net zero.
CIOB Global Student Challenge 2024
Universitas Indonesia wins for second year running.
New project and cultural district described in detail.
The nature of EPCs, crticism and inaccuracies.
History, issues and redesign.
From waste recycling to energy performance the hierchy.
An introduction to WERCS and WEEE responsibilities
Dealing with 2 million tonnes of waste equipment a year.
Global BACS Market: analytics and optimisation
A BSRIA glance at building automation and control systems.
What it is and how to use it.
Types of insulating plaster by binder and insulant.
Investors in People: CIOB achieves gold
Reflecting a commitment to employees and members.
Scratching beneath the surface; a guide to selection.
ECA 2024 Apprentice of the Year Award
Entries open for submission until May 31.
UK gov apprenticeship funding from April 2024
Brief summary the policy paper updated in March.