Mechanical Supplies
Ceiling fans
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- Ceiling and HVLS (high volume, low speed) fans that move air within a space without ducting it, from decorative residential units to large-diameter industrial fans. An HVLS fan moves a very large volume slowly, producing a wide floor-level breeze rather than a narrow draught, and its performance is rated under AMCA 230 rather than the ducted-fan standards.
Application
Used in warehouses, workshops, mosques, sports halls, atria and outdoor terraces. The air movement raises the acceptable dry-bulb temperature by roughly 2-3 K at the same comfort level under ASHRAE 55, so on Gulf and Egyptian projects they are commonly used to lift the cooling setpoint, or to make a semi-outdoor space usable with no mechanical cooling at all.
Standards & Reference 5 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.
IEC 60335-2-80
Safety requirements specific to fans, within the general standard for household and similar electrical appliances.
Also citedAMCA 230ASHRAE 55ErP 206/2012
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