MESP™ stands for Micro Electrostatic Sterilizing Purifier, which is a new generation air purification technology. It could high-efficiently capture up airborne particles by micro electrostatic system with very low maintenance cost.
The particle collection filter is innovative dielectric with intense electrical field. It 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 2-4mm diameter hollow polymer flutes. 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.
The unique volt-ampere characteristic curve of AirQuality MESP technology makes the current get very small while the voltage increases again. Therefore, high voltage and low current have no risk of electric shock, and there is no need to worry about the harm of ozone. The unique nano PP insulation coating technology of micro static electricity can effectively avoid the potential dangers of electrode damage and electric shock, which are traditional ESP products' weaknesses.
The unique nano PP made filter is washable and its overall lifespan could exceed 10 years with small effect attenuation. The total running cost should be much lower than traditional media filter products.
How does MESP kill viruses in the air?
Phase 1. High voltage electrostatic field kills harmful microorganisms
When bacteria and viruses pass through the micro-electrostatic filter, due to the high-voltage electrostatic effect of up to ten thousand volts, with the tiny potential difference between the bacteria and viruses from the outside to the inside, the high voltage will instantly destroy the cell wall of bacteria and the protein shell of viruses, thereby inactivated, instantly killed.
Phase 2. If the virus is adsorbed on the electrostatic filter and will be continuously inactivated
In the MESP sterilization module, the dielectric material forms a honeycomb hollow microchannel, and the dielectric wraps the electrode sheet to form a strong electric field in the channel. It exerts a huge attraction to the charged bioaerosol moving in the air, while only generating minimal airflow resistance. It can absorb almost 100% of air movement biological aerosols, PM2.5 and other particulate matter.
When the virus loses its host cell, it will naturally die out after being continuously adsorbed by a strong electric field. In addition, as viruses and bacteria continue to be under the action of high-voltage electric fields, they will gradually become carbonized until they are eliminated.
The Diagram of MESP Working Principles
MESP uses negative ionization technology to generate corona and release negative ions through a voltage of -10.2KV. The negative ions collide with air molecules to generate more negative ions and form an avalanche effect.
After being far away from the corona zone, the negative ions will be attracted by the surrounding air, so that the gas molecules will be negatively charged and move towards the MESP positive plate under the action of a strong electric field.
The fine particles will block the negatively charged air molecules from flying and stick them together. The fine particles continue to absorb negatively charged molecules until they are saturated. The fine particles thus carry enough negative charges.
The negatively charged fine particles move to the positive plate under the action of the dense MESP matrix electric field, and are firmly attracted by it.
MESP vs HEPA, which one is better for air sterlization and purification ▸
The comparison of mainstream air sterilization technology ▸
The Milestone of MESP
In 1824, Hohlfeld, a mathematics teacher in Büzig, Germany, first proposed that electricity can precipitate smoke particles.
In 1906, CF.G.Cottrell succeeded in experiments at the University of California, Berkeley, USA, and developed a Cottrell-type industrial electric dust collector.
In 1907, the first industrial electrostatic precipitator was built near San Francisco, USA, successfully processing industrial dusty gas.
Since 1955, electric dust removal technology has been widely used in the fields of industrial smoke and dust treatment and air purification.
In 1980, Masuda and others in Europe carried out the application of high-voltage narrow pulse power supply in the field of electrostatic dust removal.
In 1990, Bai Xiyao and others in China conducted research on the same-polarity soot-charged condensation technology of the DC electric field.
In 1996, Hever-9 Group successfully applied electrostatic technology to a large tunnel ventilation system for the first time.
In 1998, Pasic and others of Ohio University in USA first proposed the concept of "Membrane Electrostatic Precipitator".
The film woven with advanced carbon fiber materials is used as the dust collecting electrode of ESP, and the dust collecting efficiency is remarkable.
In 2005, Woodruff and others in the United States first proposed the electrostatic dust collection air purification technology with the concept of a intense field dielectric.
In 2014, AirQuality Tech comprehensively promoted the application of MESP technology in industrial and civil fields which made significant progress in this area.