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Dynamic Commercial News
February 2010
Inside This Issue
Ultra-Fine Particle Removal and Outdoor Air Quality
Good Turn-Out for Orlando AHR Expo
Visit Us at ACCA
Visit Us at Globalcon 2010
Attention Sales Engineers
IAQ Links
Join Our Mailing List
This month we want to share the results of recent tests conducted this year at a Washington DC office building. The tests concentrated on black carbon (vehicle emission) ultra-fine particles measured outside and inside the building. As you will see, Dynamic V8 Air Cleaning Systems play an important role in ensuring good IAQ in urban environments.

Carl Mitchell, Vice-President Sales
Ultra-Fine Particle Removal and Outdoor Air Quality

V8 Air Cleaning System addresses Black Carbon and Ultra-Fine Particle Emissions
While Indoor Air Quality (IAQ) is often the focus, Outdoor Air Quality can have a major impact on the IAQ.  In fact, outdoor air is far more likely to be the cause of IAQ problems than sources inside a building.  Buildings in urban areas or adjacent to roadways have the challenge of effectively controlling ultra-fine and black carbon particles present at high levels in the outdoor air from the combustion of petro-chemicals in vehicles, boilers, heavy equipment, etc.   Much of the recent research on the danger of ultra-fine particles is because of their ability to pick up gas phase contaminants.  Atmospheric ultra-fine particles (UFPs, diameter < 100 microns) have been linked to adverse respiratory and cardiovascular health effects (Oberdorster et al. 1992).  Recent studies have found that UFPs may enter the circulatory system and deposit on the brain and have shown high toxicity in lab animals (Oberdorster et al. 2002, 2004).  Quoting from a paper sponsored by the National Institutes of Health (NIH):
"Ultra-fine particles <0.1 micron (UFPs) dominate particle number concentrations and surface area and are therefore capable of carrying large concentrations of adsorbed and condensed toxic air pollutants....major characteristics of UFPs that support their potential importance include high pulmonary deposition efficiency, magnitudes higher particle concentration than larger particles, and thus a much higher surface area.  The UFPs surface can carry large amounts of adsorbed or condensed toxic air pollutants (oxidant gases, organic compounds, transition metals) (Oberdorster, 2001)."
Therefore, the ability to control ultra-fine and black carbon particles in environments where they are likely to occur is critical.
Dynamic V8 Air Cleaners were installed in a large custom air handler that serves a 10-Story office building on K Street in downtown Washington, DC, a few blocks from the White House.  The project was part of a Green upgrade and expansion of the building.  The air handler is on the roof and the air cleaners were installed two years ago.  Since that time the media has not yet been changed.  Full-flow pressure drop has increased 0.08" w.g. to about 0.3"w.g.
The building is in an urban environment with a high level of vehicle traffic throughout the day.  In such applications, the outdoor air is a significant source of indoor pollutants, especially the ultra-fine particles (those smaller than 0.3 microns) and black carbon from vehicle exhaust. 
Outdoor ventilation air is brought into the space at a rate of 15-20 cfm/person.
Testing Equipment 
Black Carbon was measured using a Magee Scientific aethalometer Model AE-42.  The output is in nanograms/cubic meter.  Ultra-fine particulate was measured using a Kanomax model 3800 which measures particles between 0.015 microns and 0.1 microns.  Output is in particles per cm3.
All tests were taken over a 5-hour period on the same day.  In speaking with Dr. Tony Hansen of Magee Scientific, he noted that virtually the only source of black carbon in a building is outdoor air, as its primary source is vehicle engine exhaust.  The same would be true to a lesser extent for ultra-fine particles, as the primary source of these is also combustion of some sort.  Therefore, the comparison of indoor levels to outdoor levels was measured.  The aethalometer was set to take five-minute samples and was left in a given location for 20 to 50 minutes.  This unit automatically averages all the data collected during each five-minute period.  The Kanomax unit was left in a given location for five to ten minutes and the data range noted.  The following locations were tested:


Black Carbon Test Results

As can be seen from the above, the indoor levels were 79-100% lower than the outdoor levels.  It is important to note that pressurization played an important role.  On the 8th floor in the late morning, the building was in the sun and, while it was cold outside, there was little call for heating because of the solar gain.  There was a minimal amount of air delivered to the space, and as such, it was negative to the outside.  There are several doors from the floor onto balconies.  These doors had sizable gaps to the outside and cold air was coming in at a palpable rate.  As will be seen below, this air had high levels of particles.  In the late afternoon when the second test was performed, the sun was down, it was colder outside and there was quite a bit of warm air being delivered to the floor.  As such it was positive relative to the outside and no air could be felt coming in around the door.  The positive pressure stopped the infiltration of particles from the outside and the black carbon levels on the floor went below detectable limits.
Ultra-Fine Test Results

Indoor ultra-fine levels were 92-99% lower than outdoor levels.
In Conclusion
As the numbers illustrate, Dynamic V8 Air Cleaning Systems were highly effective at removing ultra-fine and black carbon particles.  This case study is but one more case of Dynamic Air Cleaners playing an important role in ensuring good IAQ in urban areas.

Good Turn-Out for Orlando AHR
The recent AHR Expo in Orlando set an attendance record as the highest attendance for an AHR Expo held in the Southeast US.  This year Dynamic showcased the V8 Air Cleaning System and its ability to 1) Clean Air, 2) Save Energy, and 3) Cut Maintenance in both new and existing buildings.  "We had a great location," said Carl Mitchell, Executive VP of Sales. "And the V8 Air Cleaners attracted a lot of attention."
Next year the AHR Expo will be held January 31 - February 2, 2011 at the Las Vegas Convention Center.  Mark your calendars!
Visit Us in Tampa at ACCA

Dynamic Air Quality Solutions Booth #315
This year ACCA is combining its 42nd Annual National Conference and Exposition with the 13th Annual IAQA Meeting and Indoor Air Expo at the Tampa Convention Center March 7-9, 2010.  Drop in to see us at booth #315.  To learn more visit www.acca.org/conference and www.iaqa.org.
Visit Us at Globalcon 2010

Dynamic Air Quality Solutions Booth # 326
March 24-25, 2010
Pennsylvania Convention Center
Philadelphia, PA

Globalcon 2010 is presented by the Association of Energy Engineers and is designed specifically for those who want to get up to speed on the latest developments in the energy field, explore promising new technologies, compare energy supply options, and learn about innovative and cost-conscious project implementation strategies.
The multi-track conference covers critical areas of leading edge technologies, including HVAC and Smart Building Systems.  For more information, visit
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As you probably already know, registered users at http://www.dynamicaqs.com/commercial/ have access to detailed information such as Dynamic Air Cleaner specifications, drawings and dimensions, logos, artwork & images, the Dynamic Air Q™ Program, and the Dynamic ROI Payback Calculator.
On the homepage, in the lower left-hand margin, there is also a place to sign up engineers for this monthly newsletter.  Sign up your key clients today!
About Dynamic Air Quality Solutions
Since 1982, Dynamic Air Quality Solutions' mission to its customers has been to develop and bring to market innovative, technologically advanced and affordable solutions to help clients optimize air quality, energy consumption, and the environment. For more information, visit our website at www.DynamicAQS.com/commercial/.