Select

Innovative Indoor Air Purification Technology

Technology Overview

Existing electric air purifiers applied to closed, indoor environments have to be closely monitored and controlled due to potential hazardous ozone emissions. Alternatively filter based purifiers have an issue of power losses owing to the raised pressure drop of filters as well as a difficulty in filter management.

Existing filter-based air purifiers require periodical filter replacements and can cause secondary pollutants such as bacteria re-generated from the filter. Electrostatic precipitators have an advantage of a low pressure drop, but require a high voltage to increase the collection efficiency of fine particles, but they may generate ozone which exceeds a recommended level in indoor air during powerful corona discharge.

Our proposed technology avoids issues faced by both kinds of technologies.

Technology Features & Specifications

  • Ultra-fine particles can be removed with a method that does not generate ozone and suffers from low pressure loss.
  • High insulation can be maintained by using dielectrically coated collection plates, which can enable stable operations even in a wet or water-cleaning environment.
  • Ozone concentration is less than a few ppb, much lower than the criteria indicated in the certification for eco-friendliness (10 ppb). NEA guidelines stated that maximum allowable concentration is 50 ppb. It can maintain the system by just exchanging water without using a filter.
  • The system having no filters has an advantage of low energy consumption with low pressure loss.

Potential Applications

  • Air purifier suppliers who provide equipment and engineering service to indoor environments such as schools, shopping centers, train stations, etc. 
  • Active ventilation system design and installation companies which major targets are public places such as subway stations, parking places, shopping centers, public buildings, and airports
  • Manufacturers of indoor air quality management equipment (i.e. precipitators)

Customer Benefits

This technology adopts the principle of electrostatic precipitation with a low pressure loss and at the same time applies ultra-fine micro carbon fiber discharge electrodes of 5 - 10㎛ in diameter to provide uniform discharge even at the low applied voltages. It results in generation of little indoor harmful substances with ozone generation less than several ppb and no need for filter replacements which require additional costs and cause filter wastage.

Make an Enquiry