Do Ceiling Fans With More Blades Move More Air?
There is a multitude of variables that can affect the decision to include multiple small fans or a single large fan. Individuals are quick to consider the capital requirements of any purchasing decision but if cost is the primary concern, its imperative to also consider installation costs, operational costs, and replacement component costs as well.
Once a budget has been determined, environmental factors should be considered before making the next decision. How is the space currently being used? How will it be used in the future? Assuming the space is wide open, a single large diameter fan would be the most cost effective (both capital and operational) way to provide circulation inside the space. If obstructions are present that can disrupt or prevent airflow from certain areas, stepping down to smaller diameters may be required to provide adequate coverage.
“When it comes to fan blades, its really the design of the blade profile that determines the effectiveness.”
Remember, it is important to recognize that how much air a fan can move (volume), but more importantly how fast the fan can move the air (velocity). It is velocity that directly relates to the cooling capability of the fan. It’s also velocity that determines the area of coverage a ceiling fan has.
Dean Wood – Manager, Envira-North Systems Ltd.
Since 2007, Dean has sold, serviced and installed HVLS projects in countless applications on every continent around the world. His experience and knowledge are key components to the continued success our sales and distribution partners.