High-efficiency particulate air (HEPA), also known as high-efficiency particulate absorbing and high-efficiency particulate arrestance. Filters meeting the HEPA standard must satisfy certain levels of efficiency. Common standards require that a HEPA air filter must remove—from the air that passes through—at least 99.95% (European Standard) or 99.97% (ASME, U.S. DOE) of particles whose diameter is equal to 0.3 μm; with the filtration efficiency increasing for particle diameters both less than and greater than 0.3 μm.
Micro ElectroStatic Precipitator is a new generation air purfication technology. Intense
describes the mechanism by which the MESP filter
is able to remove even the tiniest particles without the use of a high-pressure-drop
fiber matrix. Airborne
particles are first given an electrical charge, then passed into a honeycomb of hollow
flutes, 2-4 mm in diameter. Encased between rows of flutes are thin electrode sheets,
which generate intense
electrical fields. The polymer flute material is dielectric, which prevents current
flowing between electrodes
but does not inhibit creation of an intense field within the flutes. Charged particles
are pulled to the walls
of the flutes,
where they stick.
HEPA Is NOT Designed For Sterlization.
1. The HEPA filter can capture viruses by attracting particulate matter. Viruses basically can not exist independently in the air, and will adhere to airborne particles and droplets (the lastest research shows airborne particles could play more important role than droplets). However, the method of physical filtration may miss some smaller particles, so the efficiency of viruses removal is not very high.
2. The viruses captured by HEPA filter is active, so there are two risks as following:
-It may be blown out by the wind to re-contaminate the indoor environment, especially if the available dust holding capacity of the filter is not enough, it will overflow
-There is a very big risk when replacing the filter, which will cause the risk of virus infection of the operator.
MESP Air Purifiers Are Perfect Air Sterilizers.
A properly maintained MESP filter should be highly effective at capturing and trapping microbes such as germs, bacteria, viruses, mold, etc. Meanwhile MESP system will defenitely disintegrate them with high voltage (over 10KV) strong electrostatic field. The official test report in China claims that MSEP products could more than 99.99%+ disinfect viruses. Safe and controllable!
An independent U.S. research laboratory conducted the research study by introducing the SARS-CoV-2 USA-CA1/2020 pathogen to an AQT air purifier built with MESP technology. The test result showed a significant reduction of pathogen at the downstream collection point and achieved a 99.99% SARS-CoV-2 sterilization rate. SARS-CoV-2 is the virus that causes COVID-19. A copy of the test report is available here.
(particle capture 0.3 microns)
|99.97%||Up to 99.99%|
|0.6 - 1.2” wg (150-350 pascals)||>0.04-0.2” wg (10-50 pascals)|
|2’ X 2’ filter may add $400 or more per year in electricity costs.||Comparable MESP filter will add only about $90/year in electricity costs|
|Final and/or pre-filters require frequent replacement/disposal.||Occasional cleaning takes only minutes.|
|Loads quickly unless configured with substantial pre-filtration.||Properly maintained MESP filter is permanent: Never needs replacing.|
|High pressure drop = high noise||Low pressure drop = quiet air flow|
We offer Portable Air Sterilizing Purifier for residential and other small spaces, and Air Conditioning Sterilizing Purifier (In-Duct Air Purifier) for commercial spaces.
① FAH: AHU Sterilizing Purifier ▸
* Also applicable to fresh air unit
② FAD: Air Duct Sterilizing Purifier ▸
③ FFC: FCU Air Sterilizing Purifier ▸
* Top return air / back return air
④ FFA: Fresh Air Sterilizing Purifier▸