Cost Effective Dust Collection For The Composite Manufacturing Industry Part 6
SIMPLE EXHAUST SYSTEM
Simple Exhaust Unit: The simplest and by far the least expensive, from an equipment standpoint, is a simple exhaust system. This type of system provides only the very lowest of filtration efficiencies if it provides any at all and is not a viable option in many parts of the Country due to State and Federal air pollution regulations. When it is a viable option, its use will be restricted to those applications where only a small amount of non-listed dust is generated and only in areas where the exhausted contamination will not affect surrounding neighbors. These types of situations are very rare. This type of collection only makes use of very course filtration media and is utilized more for air movement in the workplace than actual dust collection. The course nature of the filtration media, if any is used at all, results in the ability to generate relatively high CFM volumes with very low horsepower, but the lack of proper filtration leaves the operator open to possible litigation if other than non-restricted dust is passed through the system. The fact that the equipment is relatively low cost is usually negated by the fact that this type of system must exhaust all the air outside the building, resulting in loss of heated or cooled air. Exacerbating this situation is the further fact that the air exhausted must be replaced from outside air which must then again be heated or cooled. This type of system has limited applications and is not recommended as a method for serious consideration but is only mentioned for the purpose of explanation.