Mechanical Supplies

Axial inline fans

About

Twin City Model TCVA AXIFAN vaneaxial fans, with a one-piece impeller cast from high-strength aluminium alloy and stationary straightening guide vanes on the discharge side that recover swirl, raising efficiency and static pressure capability while reducing noise. Airflow to 103,000 CFM (175,000 m³/h) and static pressure to 7" w.g. (1,740 Pa), in Arrangement 4 direct drive and Arrangement 9 belt drive, with nine hub-to-tip ratios
Model TCVX adds adjustable blades.

Application

The workhorse for car park, tunnel and corridor ventilation, dishwasher and elevator shaft exhaust, stairwell pressurisation and emergency smoke exhaust. High-temperature construction to 250 °F and spark-resistant construction per AMCA Standard 99-0401 are available

where the same fan is part of the smoke strategy an EN 12101-3 certified version is required, because a standard axial fan is not a smoke extract fan.

Standards & Reference 8 cited

AMCA 210
The laboratory method for testing fan aerodynamic performance: airflow, pressure, power and efficiency. A fan curve that is not tested to this is not comparable with one that is.
AMCA 211
The certified aerodynamic ratings programme: the equivalent independent verification for a published fan performance curve.
AMCA 300
The reverberant room method for measuring the sound a fan emits. The source of the sound power figures used in an acoustic calculation.
AMCA 311
The certified sound ratings programme: independent verification that a published sound rating is what the fan actually produces.
AMCA 99-0401
The fan construction classes within the AMCA handbook, setting what a fan can be run at structurally.
ISO 5801
The international method for testing industrial fan performance using standardised airways. It is the ISO counterpart to AMCA 210.
UL 705
Power ventilators: the safety listing for powered fans in North American specifications.
EN 12101-3
Powered smoke and heat exhaust ventilators: the fans that must keep running in hot smoke.