Page 28 - Climate Control News August 2021

Indoor Air Quality
Reducing airborne pathogens
VENTILATION AND FILTRATION provided by heating, ventilating, and air-conditioning (HVAC) systems can reduce the airborne con- centration of SARS-CoV-2 (the virus that causes COVID-19) and thus the risk of transmission through the air.[1]
From improved filtration to alternative supply air methodologies, changes to your HVAC sys- tem can reduce the probability of exposure to airborne pathogens within workplaces, schools, and other high occupancy areas.
The quality of the air delivered by an HVAC system is commonly measured by its ventilation effectiveness, which is the ability of the system to remove internally generated airborne pollutants from a space.
Generally, the HVAC system removes pollutants through
the introduction of fresh, clean air and removal of polluted air.
“Understanding and
controlling building venti-
lation can improve the quality
of the air we breathe and reduce the
risk of indoor health concerns including pre- vent the virus that causes COVID-19 from spreading indoors.” – World Health Organiza- tion, March 2021
This can be done through:
1. Reducing source emissions
2. Capturing emissions from within the space
3. Diluting emissions by mixing more clean air
into the space
4. Removing emissions with filters, ultra-violet light, and/or bipolar ionization
Holyoake by Price can supply solutions that
use the above methods to best suit your applica- tion, fit in your budget, meet project timelines, and provide improved indoor air quality for oc- cupants. Below are some examples of the solu- tions we can provide.
The goal of the OAP is to filter room air through consistent air changes. The fan pow- ered unit draws air directly from the space, through a HEPA rated filter, MERV8 pre-filter, as
well as optional
UV-C or Bipolar Ionization accesso- ries and discharges the clean air directly
back into the space. The OAP is de- signed to be installed directly above any space and does not require modifi- cation to existing ductwork or
other HVAC equipment.
The OAP can be installed in a T- Bar ceiling or an exposed ductwork lay- out. The unit pairs perfectly with any Holy- oake grilles or diffusers. The OAP is suitable for offices, classrooms, or any space requiring in-
creased air filtration.
• Quick installation
• Simple air flow adjustments with EC motor
• Easy filter changes
• Optional UV-C and Bipolar Ionization
Accessories
ABOVE: Puraflo brings cleanroom grade HEPA filtered airflow to commercial spaces.
LEFT: The OAP can be installed in a
T-Bar ceiling or an exposed ductwork layout.
• Quiet, low energy operation
• 50-380 litres/sec
• MERV13 filter available in lieu of HEPA
Derived from Price’s industry leading line of Fan Filter Units, Puraflo brings cleanroom grade HEPA filtered airflow to commercial spaces in- cluding medical facilities, dental clinics, person- al care homes, offices, classrooms, and more.
Local recirculation of HEPA filtered airflow ef-
“CHANGES TO YOUR HVAC SYSTEM CAN REDUCE EXPOSURE TO AIRBORNE PATHOGENS.”
fectively increases the air change rate in a space and dilutes contaminants reducing the likeli- hood of exposure to airborne contaminants.
Puraflo is simple to install, and functions completely independently of the existing HVAC system, eliminating the need for costly infrastructure changes while providing supe- rior air filtration.
• For clean air fast, temporarily use Puraflo in a floor mount configuration, and later have the same unit ceiling mounted for a permanent clean air solution
• Multiple size and configuration options to suit project requirements
• Room-side replaceable HEPA filters allow quick and easy filter replacement from within the room
• Optional MERV 8 pre-filters capture large par- ticulates, extending the life of the HEPA filter For more information about our Air Purifi-
cation solutions please visit our website: www. Holyoake.com or scan the QR code to down- load our Reducing Pathogens – Retrofit Appli- cations brochure.
[1] https://www.ashrae.org/technical-resources/re- sources
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