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Modular Clean Rooms Go With the Flow: Exploring Laminar Air Flow

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Many people carry the common misconception that a modular building is not as secure as a building created under conventional construction. This fallacy is especially damaging to businesses and industries in need of a clean room, which can become an incredible investment when pursued with conventional construction. Don’t waste your time and money on this drawn out process. Instead, choose a modular clean room or clean room wall system. In addition to being a timely, economical alternative than a traditionally built clean room, a modular building can offer all of the special amenities required to keep your space safe and sanitary.

A Laminar Air Flow System helps keep the air free of dangerous particles that can sometimes enter the air in a cleanroom situation. Laminar air flow systems rely on either HEPA or UPLA filters. These filters capture particles in screens of randomly placed fibers and must be changed regularly to maintain a clean air environment for your cleanroom. While HEPA filters are more common, the choice of filters is determined by our clean room dealers who also supply the ceiling system and pass throughs that are then incorporated into our wall systems and modular rooms.

To create laminar air flow, we can create a cavity space within our 3″ wall panel or we can add a secondary 1 ¾” thinner profiled wall system running parallel to the perimeter wall for clean room applications that require a larger cavity space.  A space is left at the top of the panel to allow air to move from the laminar air flow into the sealed ceiling plenum.  A series of louvers are then placed at the bottom of the panel to allow air to be drawn in from the room and filtered through the HEPA filters in the ceiling. Once clean, the air is pumped back into the room. The classification of cleanliness required for your modular clean room will determine the number of filters, the number of louvers, and the amount of space required for laminar air flow.

While 3″ perimeter walls are often preferred for a variety of reasons, many customers will opt for one of our thinner, 1 ¾” wall systems instead. Thinner walls take up less space and are more economically priced.  It is important to note that our thinner wall systems are not load bearing like our 3″ walls and they provide a slightly lower insulation value.

Keep in mind that while a laminar air flow system keeps air cleaner, it is not a required attribute for all clean rooms. If you have questions about whether or not your clean room will need laminar air flow, you should ask your cleanroom designer. To find out more about Porta-King’s other options for modular clean rooms, call us today!

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