London Falls TM type Industrial Air Cleaning Technology

How about a link to the companies website. Sounds great, but I've been designing industrial air systems for 20+ years & this is the first I've heard...

n1659@conocophillips.com

Thanks.

http://mysite.verizon.net/restkgfn/airpolcontrol

www.epa.gov/ne/assistance/ceit_iti/tech_cos/air.html

Thanks.

http://mysite.verizon.net/restkgfn/airpolcontrol

The separation principle is well known for decades if not centuries. This device looks OK but I would like to know about the pressure loss of the airflow due to the use of this capture system.

I haven't seen air bubbling through water like this without a heavy penalty in energy consumption. Besides, if the pressure required builds up in the ducts, the fan should be capable to deal with this added pressure loss and the ducts should be heavier and the leaks can be substantial.

Can you elaborate on this?

Dear Mario,

1. London Falls^TM has a resistance in the range from 2" to 3" wg.

2. This is not "air bubbling through water"

3. "The pressure builds up in the ducts (1), the fan should be capable to deal with this added pressure loss (2) and the ducts should be heavier (3) and the leaks can be substantial (4)" are another topics, having nothing common strictly with the London Falls^TM unit. Those could be considered in the separate discussion.

4. For better understanding the specific nature of the London Falls^TM , please, investigate the following website: < http://mysite.verizon.net/restkgfn/airpolcontrol > Here you can watch a movie clip.

5. Any questions? Call or e-mail.

Thanks for your interest and experience.

APCCO

Would you care to elaborate on your statement "I haven't seen air bubbling through water like this without a heavy penalty" ?

thank you

Dear y eye:

I have seen the video and there it is easy to see that there is a sizable amount of water dragged up by the airflow with high turbulence. The water-air mixture goes high up into the device and it looks like the turbulence and the water-air column plus the energy needed to burst the water bubbles (as seen in the video) require a lot of energy that comes from the pressure and velocity energy of the airflow and this is provided by the fan.

Conventional devices using this principle, (water showers and the like) don't have this behavior and have certainly a low pressure loss. Of course, from a contamination separation point of view, the London Falls device should have a much better performance because of the highly turbulent mixture air-water.

I just wanted to know the energy balance of this device as we all know that higher pressure losses in an HVAC system brings higher energy bills and rises the demands on the fan and the ducts, and tend to rise the air leaks in the ducts too.

When I've mentioned that I haven't seen air bubbling like this without a heavy penalty (in energy), it is so because this is similar to the aerators in waste water treatment devices and they require powerful blowers (even with low levels of water) to overcome the pressure loss. I am pleased to know that the London Falls device only has a pressure loss of 2 -3 in wc that is less than I've thought it would have.

Please, open website < http://mysite.verizon.net/restkgfn/airpolcontrol

Hi apcco,

Wonderful job!

Ther are two different type of "London Falls" in your site , the first is made by glass and the second is made by metal . http://mysite.verizon.net/restkgfn/airpolcontrol/id1.html

It seems the metal version ( black and white picture ) is very different from another , am i right ? are your products the same as the glass one ?

Thanks

The U.S. EPA has developed an Air Quality Index to help explain air pollution levels to the general public. 8 hour average ozone concentrations of 85 to 104 ppbv are described as "Unhealthy for Sensitive Groups", 105 ppbv to 124 ppbv as "unhealthy" and 125 ppb to 404 ppb as "very unhealthy".[19] The "very unhealthy" range for some other pollutants are: 355 μg m−3 - 424 μg m−3 for PM10; 15.5 ppm - 30.4ppm for CO and 0.65 ppm - 1.24 ppm for NO2.