ASHRAE Position on Filtration and Air Cleaning
A position document on “Filtration and Air Cleaning” was recently published by ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers).
This document is well worth reading as it resolves a number of contentious issues with respect to some of the wilder claims about some forms of air cleaning products on the market.
Topics covered in an authoritative and balanced manner include, Mechanical, Sorbent, and Electronic air filters. Information on Ozone, UV and other emerging technologies are also detailed. A focus of the document is the net benefit and possible adverse affects on health of some of these technologies.
Some of the points that are covered can be summarised as:
- Mechanical filters reduce indoor concentrations of airborne particles.
- Photocatalytic oxidation have been shown to generate harmful contaminants in some cases.
- UV-C has been shown to inactivate some viruses, bacteria and fungi.
- For some newer technologies, there are conflicting results published.
- Negative health effects arise from exposure to Ozone.
- Many types of stand-alone air cleaners have inconclusive health benefits
The free ASHREA Position Document is well worth reading in full and can be found via the following website link under “Filtration and Air Cleaning (PDF)”.
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P.O. Box 747, Mulgrave VIC 3170 AUSTRALIA
Phone: +61 3 9562 0011
Fax: +61 3 9562 1177
Email: info@airepure.com.au
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