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Shopping for an air cleaner? Not sure which type is best for you? Well read on, because you have found the right site to help you learn more about air cleaners.
The most important component of an air purification system in the industrial or the high-rise complex setting is the air filter, of which many types to suit various applications are available. High Efficiency Particulate Air HEPA filters are widely used in HVAC systems for a varied set of applications in order to provide a pure and clean atmospheric ambient environment. Ultra Low Penetration Air ULPA filters, rather then the HEPA filters may be required for ultra clean environment. The maximum particle size that can be filtered by HEPA filters is 0.3 micron. ULPA filters can filter particles down to 0.12 micron and have a DOP efficiency of 99.999%. A representative HEPA pressure drop figure for 12 in or 304.8 mm filter is 273.6 Pa for a face velocity of 1.27 m/sec. SULPA or Super ULPA filters are required for maximum cleaning requirements. HEPA filter pressure drops can range from 24.9 Pa to 249 Pa. and air velocities can range from 20 m/sec to 34 m/sec. The air velocities that can be maintained after filtration which involves the removal of “expired” or contaminated air from an ambiance and its replacement with fresh air after suitable processing and filtration may range from 3 to 130 Foot per Minute or FPM (Energy Efficient Design, 2005).
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