Plug-flow wall diffuser to provide enhanced indoor air quality to occupants in a firing range.

	Location – side: Is located against a wall.
	Plug-flow discharge: Low turbulence substantially uni-directional airflow to sweep away contaminants and provides spot cooling/heating.
	Fixed direction:  Air pattern is fixed horizontal discharge.
	Face shape: Rectangular metal.
	Face pattern: Heavy duty perforated metal face.
	Face pattern: Linear diffuser inserts.
	Metal Face: Heavy duty galvanised or powder coated metal finish.
	Plastic Face: Plastic barrels in linear diffuser inserts.

SMARTEMP Firing Range Plug-flow Wall Diffuser FPW-FD

In an indoor firing range the ventilation system must protect the occupants from contaminants such as vaporised lead and powder. The air should be supplied in a way that directs contaminants away from the shooters’ breathing zone. It is also important that the supply air does not create turbulence and eddies that draw the contaminants back into the breathing area. To achieve high indoor air quality (IAQ) requirements, supply air should be delivered as a plug-flow air stream from an entire wall of displacement cassettes located behind the shooter. The  construction of the SMARTEMP^® Firing Range Plug-Flow Wall Diffuser, type FPW, guarantees an even airflow pattern throughout the cross-section of the space. Specialised heavy-duty perforated displacement cassettes are mounted in a pre-fabricated steel frame with pre-drilled holes for quick and easy assembly and installation.

Integrated adjustable slot diffusers provide forward momentum, stabilising the air stream, to ensure a uniform plug-flow across to the opposite side of the firing range. Baffle plates in the plenum behind each inlet equalise the airflow across the entire face of the diffuser. When designing a plug-flow wall distribution system, the velocity of the air in the wall plenum and in the inlet ducts is critical. We recommended that the depth of the plenum be such that air velocities in the plenum are minimal (typically less than 2 m/s) so as to prevent asymmetrical flow from the diffuser. This ensures uniform distribution of the supply air over the entire diffuser face.

The diffuser inlets are sized to prevent excessive sound levels and pressure drops. The displacement cassettes are made from multi-layers of perforated sheet metal with visible powder coated perforation to colour of choice.

The height and width of Smartemp shooting range air supply systems are designed individually on a project specific basis. Therefore, generalised dimensions are not avaialble. The standard depth of a plug-flow wall element is 700 mm.