MESP Technology Explained

MESP® - A New Generation of Electronic Air Filtering

Introduction

Micro-Electrostatic Precipitation (MESP®) represents a new generation in advanced electronic air purification. Building on the foundational principles of Electrostatic Precipitator (ESP) technology, but engineered to eliminate ESP’s legacy drawbacks, MESP achieves high-efficiency particulate removal, powerful microbial inactivation, and ultra-low operating cost while maintaining exceptional safety.

MESP® effectively captures PM2.5, fine particles, dust, pollen, smoke, soot, fungal spores, and bio-aerosols. At the same time, its patented design enables virus and bacteria deactivation, zero meaningful ozone production, and no arcing or sparking, addressing the historical limitations associated with earlier electronic filtration systems.

The result is an air-cleaning platform suitable for modern HVAC systems, demanding indoor-air-quality environments, and long-term sustainable operation.

Particle Charging

In an MESP® system, air first passes through a charge grid that produces a controlled corona discharge. This discharge emits high-energy electrons at approximately 10.2 kV, initiating an avalanche effect in which electrons collide with air molecules and generate a dense field of negative ions. 

As the ions migrate away from the corona zone, they attach to airborne particulate matter—including ultrafine particles, aerosols, and pathogens—imparting a strong negative charge.

Electrostatic Capture

Charged particles are drawn into a honeycomb-structured collection module composed of rows of narrow polymer tubes, each with a 1.8 mm internal spacing. Within each tube, insulated electrode sheets generate a powerful electric field. As the charged particles enter this matrix:

  • They are pulled toward the positively charged surfaces. 
  • They adhere to the internal tube walls. 
  • They remain immobilized due to the strong Coulombic attraction. 

Unlike conventional ESP devices, the polymer tube insulation prevents current flow between electrodes even under high voltage. As a result: 

  • No arcing 
  • No sparking 
  • No unsafe current levels 
  • Dramatically reduced ozone generation 

This is achieved through a unique volt-ampere characteristic curve: high voltage with extremely low current, ensuring safe, stable performance.

SCHEMATIC DIAGRAM OF MESP®

MESP uses a charge grid to generate a corona discharge and release high energy electrons with a voltage of -10.2KV. These electrons form an avalanche effect and generate more and more electrons. Finally they collide with air molecules to produce lots of negative ions.

Once away from the corona zone, the negative ions are attracted to the surrounding air, negatively charging the air molecules, which then 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.

Once the fine particles carry enough negative charges, they move to the positive plate under the action of the dense MESP matrix electric field – and are firmly attracted by it.

HOW MESP® ELIMINATES VIRUSES AND BACTERIA?

Instantaneous Inactivation in the High Voltage Field

As bacteria, viruses, and other bio-aerosols pass through the MESP charging zone, the intense Coulomb forces:

  • Disrupt bacterial cell walls
  • Damage viral protein shells
  • Destroy structural integrity
  • Inactivates microorganisms instantaneously

Continuous Inactivation on the Filter Surface 

Captured microorganisms remain exposed to the electrostatic field within the dust-collection module which over time:

  • The electrical impact continues damaging microbial structures
  • Organic material becomes carbonized
  • Pathogens lose viability and cannot re-aerosolize

WHY MESP® OUTPERFORMS TRADITIONAL TECHNOLOGIES?

Compared to Mechanical Filters 

Compared to Legacy Systems

  • Captures ultrafine particles that pass through MERV filters
  • Very low pressure drop ? reduced fan energy consumption
  • Washable and reusable (10+ year lifespan)
  • No recurring filter replacement costs
  • No landfill waste from disposable filters
  • No arcing or sparking
  • Negligible ozone generation
  • Ultra-stable high-voltage, low-current operation
  • Safe polymer tube insulation design
  • No risk of electrode damage
Logo