Comtech Research LLC Newsletter No. 1 - April 23, 2003
We are pleased to bring you issue number one of our newsletter.
Since most subscribers have expressed an interest in the ultraviolet in-duct Air Probe
we decided to make that the subject of our first issue. In future issues, subjects such as negative
ions, air purification, air quality, allergies, and effects of high-density negative ion generators
on people may be discussed. The newsletters will not be just advertising. They will contain
informative material of value to many types of people.
We welcome suggestions for future newsletters, as well as questions on this one.
Rid Your Home or Business of
Allergens, Bacteria, and Viruses
By Glenn Teakell, Comtech Research
- Do you have allergy problems?
- Is there mold you would like to get rid of in your home?
- Are the odors in your house getting intolerable?
- Tired of running the kids to the doctor for "cold-like" symptoms?
An Air Probe Sanitizer™ can very well be the answer you are looking for. These units are a safe
and cost-effective way to eliminate most allergens, bacteria, and viruses that produce allergies,
illnesses, and odors from your home, by using a high-energy form of ultraviolet light.
Notice how Air Probe Sanitizers have benefited others
or more, it’s not surprising that utility bills in Dallas ran 15% to 35% higher than typical
summers. Again, during the summer of 1999, record breaking heat forced building operators to crank
up their air conditioning systems. Sometimes 24 hours a day. But at the headquarters of Central
& South West Corp., both this year and last, building services technician David Lewis reports a
significant decrease in energy usage. Through the brutal 1998 summer, he says, they were able to
cool the near 500,000 sq. ft. building coasting along on a maximum of three 300-ton chillers instead
of the customary four. That amounts to an estimated 300+kW reduction when factoring in related
Christian Van Den Heuvel M.D. of Boynton Beach, Florida observed, "My five-year-old grandson
has severe allergies which makes breathing difficult, especially at night. My daughter has had to
run a humidifier almost nightly, and still found him on more than one occasion propped up on two
pillows, trying to breathe. He never slept soundly through the night and has had dark circles under
his eyes. Every morning he suffered with a stuffed up head that he was unable to clear. After the
installation (of the Air Probe Sanitizer system) we saw immediate results. My daughter first noticed
a cleaner smell in the air when she returned home from work that evening. My grandson slept soundly
throughout that first night without either a humidifier or being propped up on two pillows. The dark
circles under his eyes have faded, and my grandson is finally sleeping comfortably throughout the
Anthony J. Rose states, "Both my wife and myself have noticed a marked improvement in the
quality of air in our home. The house is always fresh and free of any unusual odors. In fact,
friends have also noted the comforting and freshness of our home.".
The Air Probe Sanitizer uses UV-C light placed in your HVAC (heating, ventilating, and air
conditioning) system which kills microbes as the air passes by the light. This can save money on
your cooling costs. It also eliminates the need to clean ducts and cooling coils (no more gel and
mold buildup on the AC coil!). Notice how the journal Electric Light & Power describes
this effect of UV-C light in its February 2000 article entitled, UVC Light Beat Heat and Save
Energy in Dallas "In 1998, with 56 days of temperatures 100
How did CSW manage to defy the statistics on chiller demand during record breaking heat (Dallas’s
second hottest summer ever)? Lewis attributes the reduced demand to the February installation of UVC
germicidal lights …"
The article later quotes Lewis referring to additional savings, ‘"… we too have
eliminated our four-times-a-year coil drain pan and plenum cleaning program and we no longer exposed
our maintenance people to biocidal agents and other cleaning chemicals needed for these tasks. …
what we didn’t expect was the rather significant improvement in coil heat transfer efficiency,
pressure drop and the subsequent lower fan rpm. This all results from our coils being continuously
cleaned by the UVC lights."’
How does the Air Probe Sanitizer disinfect the air?
It does this by using ultraviolet-C light. (UV-A is the UV light that is used in tanning beds.
UV-B is what causes skin cancer. UV-C is germicidal and generates helpful negative ions and
hydroxyl, a natural compound that scrubs pollution from the earth's atmosphere.) As air flows by the
UV-C light, the resonance of the wavelength of the UV-C light (about 2537 Angstroms) produces the
right amount of energy to break molecular bonds of the pathogens. The result is that the proteins
and nucleic acid macromolecules found in bacteria, fungi, viruses, molds, and airborne cysts of
protozoa are killed by instant ionization. (This light has the same affect on humans but is limited
to the skin and eyes. The Air Probe Sanitizer system is self contained in the HVAC unit and
therefore is harmless.) 100% of the pathogens within inches of the light are destroyed. Obviously
the light has less effect on pathogens further away from the light source. But by being enclosed in
the HVAC unit made of a material that is reflective to UVC light, the Air Probe Sanitizer increases
its ability to kill pathogens up to 6 times. It is important to be mindful that there must be
sufficient exposure time to allow for an acceptable dose of UVC rays to affect the organism.
Therefore, the air flow rate affects the germicidal rate. Some larger systems will need several
probes to increase the exposure time. Keep in mind that as the air is recirculated through the
building several times a day, pathogens will continuously be eliminated from the air.
How well does it remove particulates from the air?
Regarding the Air Probe Sanitizer, notice the report of Gary Clark president of Z-Scan, Inc.,
"After … receiving one of your units, I must admit that I was skeptical of your claim that
the probe would reduce airborne particles. My company certifies clean air systems primarily in
hospital environments, so we have the equipment to prove or disprove your claim. Particle counts
were conducted before the air probe was installed. Then, the probe was installed and retested 30
hours later. Using a particle Met One Counter, I sampled air from my duct system located
approximately 45 feet downstream of the air handler. Samples were taken at 1, 3, and 5 microns, in
one minute durations, which results in the number of particles found in one cubic foot of air. Six
one-minute samples of each size were taken and the following is the average of these tests."
- At 1 micron the Air Probe Sanitizer reduced the amount of particles from 40,360 to 8550
- At 3 microns the Air Probe Sanitizer reduced the amount of particles from 9020 to 670
- At 5 microns the Air Probe Sanitizer reduced the amount of particles from 5030 to 270
He concludes, "Your product works!"
Yes it does work. Your health can benefit from its germicidal sanitization and air
purification, your buildings will be rid of unwanted odors, and your pocketbook will be heavier
because of its ability to save money.
The Penn State University Aerobiological Engineering site (the home page is http://www.arche.psu.edu/iec/abe/
) is an extremely interesting and informative web site. "Aerobiological Engineering" is
the art and science of designing buildings and systems for the control of airborne pathogens and
reduction of respiratory infections in indoor environments.
There is a wealth of information there on subjects such as:
- SICK BUILDING SYNDROME
- AIR FILTRATION
- ULTRAVIOLET IRRADIATION
- NEGATIVE AIR IONIZATION
- Mold and Buildings
- Defending Buildings Against Bioterrorism
- Indoor Mold Growth: Health Hazards and Remediation
- THE SPREAD OF DISEASE IN OFFICE BUILDINGS
- LEGIONNAIRES DISEASE
Their page http://www.engr.psu.edu/ae/wjk/uvhpac.html
specifically discusses UV-C light applications, and among other things, there is an interesting
photo there of microbes growing in a system without UV-C lamps installed.
"Air Probe Sanitizer" is a trademark.
This product is not a medical device. Please see the disclaimer
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Comtech Research LLC. All Rights Reserved.
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