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« on: September 19, 2007, 04:49:43 PM »
For exhaust of combustion equipment/engines (cars, boilers, furnaces, and bigger) you need a certain amount of free area for fumes to flow out. Example, louver blades are spaced and louvers sized to allow for the proper free area. The exhaust is being sucked out as much as pushed out so a filter could begin to block the free area and result in toxic byproduct of combustion being stuck in basements, inside cars, inside factories and coil/oil power plants.
Basically, the byproduct doesn't disappear, it goes somewhere, but is not healthy to have in enclosed space. Perhaps, rather than filter the air, there could be a way to change the character of the air -shooting ions, some such thing- and clean the air without decreasing air flow.?
I dunno, oil is messy.