When the electric field becomes very strong (on the order of tens of thousands of volts per inch), conditions exist for air to begin to decompose. Some ionization devices require airflow to work properly, while others don't. If ionizers are chosen that require airflow, they must depend on the available airflow or include fans in their design. It must be determined whether the fans for distributing air ions are compatible with the working environment. Compressed gas ionizers will require a gas source (usually air or nitrogen) and filtration compatible with their area of use.
Ionized air is also not inherently capable of binding to all types of molecules, and tests have shown that allergens present in the air, such as pollen, indoor dust, pet dander and smoke, are not effectively eliminated with these devices, since a negative oxygen ion does not circulate or adhere to them for a variety of reasons. There is some controversy about the safety and value of ionized air systems, since, when loading oxygen molecules, low levels of ozone are also produced. Most air purification systems that claim to ionize air impart a negative charge to oxygen molecules. There is weak evidence that negative air ionization is associated with lower depression scores, especially at higher exposure levels. The California Air Resources Board has a page listing air purifiers (many of them with ionizers) that meet their indoor ozone limit of 0.050 parts per million.
There was no consistent influence of positive or negative air ionization on measures of anxiety, mood, relaxation, sleep and personal comfort. Air ionization neutralizes static charge on isolated and isolated objects by producing a balanced source of positively and negatively charged ions. Ionized air is also more prominent in nature after a rain and a thunderstorm, which explains why the sky often appears brighter and clearer after the passage of a storm than usual on a dry, sunny day. When he was in his early twenties, Alexander Chizhevsky invented the first version of an air ionization system known as the Chizhevsky chandelier. Because it uses only air that is already present in the work environment, air ionization can be used even in clean rooms where chemical aerosols or some static dissipating materials cannot be used. Air ionizers are used in many different applications, from purifying air from particles, contaminants and allergens to controlling electrostatic discharge (ESD) in work environments.
Production Automation offers a wide variety of Simco air ionizers, including room systems, table and table fans, point-of-use blowers, compressed air guns, nozzles and special ionizers for nitrogen, CDA, high temperature and tight space applications. Air ionizers are the best choice for any environment where you work with materials such as quartz, glass, plastic and ceramic, since these materials are insulators; this charge cannot be easily removed by connecting them to the ground. Ionization decreases very sharply with distance (even in ducts), so air ionization is rarely used for this purpose and only for the elements immediately adjacent to the real ionizer. The concept of using ionized air to purify the atmosphere was first proposed by Alexander Chizhevsky in the early 20th century. He founded a field of study known as aeroionization to investigate the effects of ionized air on living beings. After a rain or thunderstorm, it is more prominent in nature; this explains why the sky often appears brighter and clearer after a storm than on a dry sunny day. Air purification systems that claim to use ionized air impart a negative charge to oxygen molecules.
This helps neutralize static charge on isolated objects by producing an equal source of positively and negatively charged ions. However, tests have shown that allergens present in the atmosphere such as pollen, indoor dust, pet dander and smoke are not effectively eliminated with these devices since negative oxygen ions do not circulate or adhere to them for various reasons. The California Air Resources Board has a page listing air purifiers (many with ionizers) that meet their indoor ozone limit of 0.050 parts per million. There is weak evidence that negative air ionization is associated with lower depression scores especially at higher exposure levels; however there was no consistent influence on measures such as anxiety, mood relaxation sleep or personal comfort. In conclusion ionized air is an effective way to purify the atmosphere from particles contaminants allergens and electrostatic discharge (ESD). It can be used even in clean rooms where chemical aerosols or some static dissipating materials cannot be used.
However it should be noted that it does not eliminate allergens present in the atmosphere such as pollen indoor dust pet dander or smoke.
