Ceiling Fan Wind Speed Factor

Ceiling fan airflow and efficiency are often overlooked but the amount of air your fan moves each minute impacts the level of performance.

Ceiling fan wind speed factor.

Ceiling fans push air down in a column of air that is nearly the same width or diameter as the ceiling fan. With above average cfm ratings high airflow ceiling fans are designed to move large amounts of air using their oversized blades and powerful motors. Plug the numbers into our calculator below and you will find the larger fan only has a 2 12 mph wind speed factor while the smaller fan is 4 34 mph. Here s theory behind wind speed factor calculator.

An instrument called an anemometer is used to calculate the wind speed by placing it in the direct flow of the wind allowing the propeller or cups to spin through the wind. The highest wattage consumed by the most energy guzzling ceiling fan on our website is about 120 watts. To feel the more powerful wind speed you will need to be directly underneath the ceiling fan or at least very nearby and not far from the tips of the fan blades. For small rooms we choose one small size yet high speed ceiling fan for you.

Five factors work together to determine the airflow and efficiency of a ceiling fan. Wind speed is calculated by measuring how quickly on average air can get from the ceiling fan blades down to the floor and is commonly reported in miles per hour mph. Blade pitch blade shape and size rpm height from ceiling and motor size. Find the high speed small ceiling fan.

How to choose a ceiling fan with just the right airflow. So if you input 120 as the fan watts and run our calculator you will see that it still costs less than 2 cents per hour to operate the most energy guzzling ceiling fan in most states. The fact is smaller blades put less drag on the motor so it spins at a higher rpm moving the air much faster creating a stronger breeze in the area directly beneath the fan. Fans do not reduce air temperature unlike air conditioning equipment but create a wind chill effect by evaporating sweat in the.

For those who have 2 fans that move the same cubic feet per minute of air cfm and one is smaller than the other the smaller fan will have more concentrated airflow that will make you feel more awesome if you stand or sit directly beneath it. The direction your ceiling fan should spin in the summer and the winter depends on the type of fan you have and at which angle the blades have been set by the manufacturer or by you if you. They cool people effectively by introducing slow movement into the otherwise still hot air of a room. Cfm stands for cubic feet per minute and is a measure of how much air a fan circulates while it runs.

That said it is standard practice to use a 42 inch fan in rooms with up to 144 sq feet of space a 44 inch fan in rooms with up to 224 sq feet space and a 52 inch fan in rooms with up to 400 sq feet space.