Revolution In Air-Cleaning Technology

ALTERNATE NON-REMOVAL SYSTEMS FOR HOUSEHOLD AIR

ELECTROSTATIC

An electrostatic precipitator (ESP), or electrostatic air cleaner is a particulate collection device that removes particles from a flowing gas (such as air) using the force of an induced electrostatic charge. Electrostatic precipitators are highly efficient filtration devices that minimally impede the flow of gases through the device, and can easily remove fine particulate matter such as dust and smoke from the air stream. In contrast to wet scrubbers which apply energy directly to the flowing fluid medium, an ESP applies energy only to the particulate matter being collected and therefore is very efficient in its consumption of energy (in the form of electricity).

OZONE SYSTEMS

Ozone, or O3 is a strong oxidizer. Ozone is unstable and thereby easily gives an oxygen to alter the chemical composition of gases by oxidizing them. It has little or no effect on solid particles although it may halt the growth of mold and bacteria when used in high concentrations. Ozone is often referred to as “energized oxygen” or “pure air” suggesting that ozone is a healthy kind of oxygen. The truth is that Ozone is a toxic gas with vastly different chemical and toxicological properties from oxygen. Ozone can be harmful to and irritate the respiratory system. It is also the primary component of smog.

Both the United States Environmental Protection Agency and Health Canada, do NOT APPROVE GENERATORS FOR USE IN OCCUPIED SPACE. It should be noted, that most people that sell Ozone generators have little knowledge in the proper application of this technology and most often do not understand the health implication of using ozone in an occupied space as a continuous air-cleaning device.

UV LIGHTS

Ultra Violet lights (germicidal lamps) or UV systems come in both a hot (8,000 hours life) and cold plasma (rate 36,000 hours life) lamp system. They produce a specific wavelength of 253 nanometers to produce UV C. This wavelength has the ability to affect microbiological contaminants like mold and bacteria. The UV C light can destroy the DNA of the microbiological contaminant and keep it from replicating. UV C has no effect on solid particles and it does NOT remove anything from the air stream. UV C lights are normally placed in the return air stream. It is important to understand that the speed of the air passing by the lights can minimize the effectiveness of the UV lights. We suggest that placing a UV light at or near the cooling coils may work better as the light can irradiate this moist area all the time and help in minimizing the growth of mold or bacteria in the coils. Some UV lights as in Abatement CAP HEPA Purifiers, have an additional wavelength that can split oxygen to create short-term ozone that will help sanitize ac coils more efficiently as well as reduce spores and odours. If designed properly, the ozone will have dissipated quickly in the cold air return. UV lights are an ancillary piece of equipment and should always be used in conjunction with an air filtration system

NEGATIVE ION GENERATORS

These devices produce negative ions that charge the particles in the air. The charged particles then attach themselves to a positive and also neutral surface area. This could be a wall, floor, furniture, ceiling, etc. Once the particles lose their charge, they will become airborne again.

PHOTOCATALYIC OXIDATION

Some substances such as titanium dioxide act as a catalyst to help create radicals and hydroxyls. A greater concentration of these ions is created when UV light shines on the surface of the catalyst containing titanium dioxide. These ions have the ability to reduce organic pollutants in the air and reduce them to simpler organics and eventually carbon dioxide and water. Looking into nano TiO2 smart coat for the photocatalyst kind of air purification system for your home, premises, offices. Not all TiO2 is the same. Read more about nano TiO2 Smart Coat.

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