Metal finishing Q&As since 1989
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Looking for field applied coating to reduce dust accumulation
Q. I'm looking for a coating that will reduce the amount of dust accumulation on HVAC return air grilles. The grilles are painted steel, and they are already installed. The application is a large commercial airport terminal building.
This airport was recently renovated and expanded. The new HVAC systems include white, linear/louvered return air grilles mounted high on the walls in the terminal and concourse areas. These grilles quickly collect dust, and they have become a cleaning nuisance. They can only be cleaned at night when the airport is unoccupied, and the effort requires the use of a lift since the grilles are sixteen feet from the floor level. I was hoping to find a spray on coating that can be applied directly to the grilles in the field, and that this coating would minimize the housekeeping effort.
Any help would be appreciated.
Mechanical Engineer - Fort Worth, Texas USA
January 20, 2016
A. Don't think that a coating will solve your problem. The only thing that comes to mind is to recess the intake louvers into the wall 5 or 6 inches and paint them black. They will still need cleaning periodically but they won't need addressing as often.
Ed Peters- Frederick, Maryland USA
April 11, 2016
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