In Part 10 of the series on air filtration, Dr Iyad Al-Attar points out the fact that each filter has several efficiencies depending on the particle size distribution, thus challenging the basic assumption applied to filters and the flow rate used in testing. He also envisages a future where the definition of filtration efficiency is more nuanced and accurate.
Posted: January 5, 2012
The performance of dust-loaded filters is not well-established, and there is much to be discovered. Future discoveries will help to rectify our past and current activities in filter design, manufacturing and operation of air filters, says Iyad Al-Attar
Posted: November 30, 2011
In the seventh part of the series on air filtration, Iyad Al-Attar explains how to strike the right balance between the best efficiency rate and the lowest pressure drop
Posted: August 30, 2011
In the sixth part of the series on air filtration, Iyad Al-Attar examines the impact of filter fouling on fan efficiency, heat transfer mechanism and the occupant’s thermal comfort.
Posted: July 30, 2011
Iyad Al-Attar follows particles on their microscopic journey, and argues that the selection process of filters needs to be accorded the seriousness it deserves.
Posted: June 30, 2011
In the fourth part of the series on air filtration, Iyad Al-Attar interrogates if our indoor spaces are designed to prevent the spread of airborne contaminants, and stresses that compromising on residential and hospital indoor air quality is, or should be, unacceptable.
Posted: May 30, 2011
In the third part of the series on air filtration, Iyad Al-Attar follows the microscopic journey of particles during a sandstorm, and asks a few relevant questions.
Posted: April 20, 2011
Air filtration, as we all know, is the process of separating dispersed particles from a dispersing fluid by means of porous media.
Posted: February 20, 2011
Jose Franco discusses air filtration systems, which according to insiders, have been overlooked, underestimated and, sometimes, misunderstood in the region.
Posted: November 19, 2010