The efficiency of air purification systems is dependent on features and design of the equipment. The measure of efficiency is determined by how well the equipment is able to attract and remove off the particles suspended in the air. Air cleaning systems are installed either in the duct work of the premises (HVAC) or used as portable air cleaners.Mechanical Air Filters
Mechanical air filters are efficient at removing the air borne particles mostly dust, smoke, pollen and any other suspended materials. Currently the efficiency of these systems is measured by the “minimum efficiency Reporting Value” (MERV) which ranges from 1-20.Determining the Performance of an Air Cleaner
Apart from determining the filters MERV value, there are other important considerations that must be made to arrive at a high efficiency filtration system. These include;
This is the effective resistance of the filter or the drop in pressure that the filtration system has on the HVAC system.( heating, ventilation and air conditioning) Filters with lower pressure drop have less resistance to air movement and increased air flow thus achieving higher filtration efficiency.
This is the measure of how much dust he filter can accommodate at a certain pressure drop level. The filters pressure drop performance level decreases with increased accumulation of dust. It is therefore vital to ensure that these filters are kept clean and serviced regularly.
This is a measure of how best the air pollution control system eliminates the dust and suspended particles from the air.
In addition, there air purification efficiency can also be evaluated by the initial performance as well as the sustained performance over the lifetime of the equipment.
These systems include the pulse jet cleaners and reverse flow systems. Good operation of these systems is critical to attaining the efficiency of the collection systems. The dust collection systems operate with a regular pulse of air to prevent cake formation in the system. The operation and timing of the pulse is an important factor of efficiency.Cake Removal
The correct removal of the cake is also critical for efficiency of operation of the system. Poor removal of dust reduces the bag life and low air filtration.
Dedusting system must also be fed with the correct air pressure and the correct frequency for better operation and cleaning.Reverse Flow Filters
Reverse flow filters on the other hand use cartridges for air cleaning; the filters are then cleaned through back flushing. The effectiveness of all these dust and air purification mechanisms requires proper design of piping, air compression, storage and controls. These processes have an impact on the maintenance, life and running cost of the equipment.
The rate of flow is also an important factor that enhances improved performance of dust collection systems. The design of sequence controllers influences this flow rate.
The air purification systems from Techflow Company limited are efficient and able to deliver clean air for longer period of time. The dust collection systems from the company include the pulse jet cartridge filters, bag filters, shakers, and fume extraction systems among others.