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A high-volume low-speed (HVLS) fan, also called an industrial ceiling fan, big fan, or helicopter fan is a type of mechanical fan greater than 7 feet (2.1 m) in diameter. HVLS fans move air slowly and distribute a large volume of air at low rotational speed– hence the name “high volume, low speed.”
How effective HVLS fan is?
Take an example you will understand well: An area of 1,000 square meters with a ceiling height of 10 meters, can be covered by one HVLS fan with a diameter of 24ft (7.3 meters), with 1.5 kW in power consumption, 828,000cmh airflow, at a noise level 43dB.
Amazing, right?
| HVLS Fans | POWERFUL FAN |
---|---|---|
Fan Dia. (M/FT) | 7.3m/24ft | 0.75M/2.4FT |
Motor Power (KW/HP) | 1.5 | 0.36 |
Air Flow (m³/min) | 138,000 (828,000) | 300 (18,000) |
Effective Area (m²) | 1,500 | 300 |
Factory Area | 9,000 | 9,000 |
Total Units installed | 6 | 300 |
Total Kw Installed | 9 | 108 |
Consumption/Year | 28,080 | 336,960 |
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Typical applications for HVLS fans fall into two classifications—industrial and commercial. HVLS Fan can be installed in any big space which is higher than 4m.