For Critical Life Safety Exhuast Applications
ANSI/AIHA Z9.5 recommends "a minimum discharge velocity of 3000 FPM". In a typical 10 MPH crosswind, an outlet velocity below 3,000 FPM (at the top of the wind band) will not allow the laboratory exhaust air to be ejected to a safe distance above the roof. Low discharge velocities can also result in downdraft within the wind band, causing contaminated air to be directed downwards.
The Plasticair SKYPLUMETM High Plume Dilution System employs a unique patented discharge nozzle design that entrains additional ambient air, diluting the exhaust from the laboratory to reduce exhaust containment concentrations. More important, the addition of the ambient air increases the SKYPLUMETM discharge wind band mass flow rate and velocity, resulting in greater nozzle discharge momentum, displacing the dilutied effluent high above the roof line
Laboratory Exhaust is drawn into the SKYPLUMETM Fan