Electric Fan Cfm Calculator

Calculate the cfm volumetric flow of air at 1 200 rpm.

Electric fan cfm calculator.

The volume of the column of air described in step 2 is pi 3 1416 x fan radius squared 0 5 feet squared times the column length in feet. Basic fan laws existing flowrate cfm. Merely it can also be termed as airflow. As a general rule of thumb follow these minimum cubic feet per minute cfm ratings when using an electric fan as the primary cooling source on a basic engine.

Follow this general guideline. Run the fan for 15 to 20 minutes after showering or bathing to expel all the excess moisture. This would be 3 1416 x 0 25 square feet x 800 feet 628 32 cubic feet per minute at 1200 rpm. Fan cfm calculator this fan calculator is typically used to calculate the cfm or cubic feet per minute of air exchange that may be desired in a building.

When installing a vent fan make sure there s at least a 1 2 gap under the bathroom door to allow fresh air to enter the room when the fan is running. Cfm or its elaboration cubic feet per minute is referred to as the amount of air that can be moved per cubic feet in a minute. Rise f δt volts amps. Whether exhausting air or bringing fresh air into a structure the calculation produced should help to figure out the size of fan s required to accomplish the air exchanges needed.

Obviously an 800 horsepower engine will need more cooling than a 400 horsepower version regardless of the cylinder count but this basic guidance will get you started. Bathroom vent fan cfm cubic feet per minute calculator. Enter any two parameters to get the third. With the motor load calculator you can quickly estimate annual energy use and cost for any electric motor.

Centrifugal blower fan squirrel cage blower. A further note is that engines that are 5 0 liter 302 cubic inches or larger should use an electric fan with 2 800 or more cfm. 1 250 cfm for a 4 cylinder 2 000 cfm for a 6 cylinder. 1 250 cfm for a 4 cylinder 2 000 cfm for a 6 cylinder 2 500 cfm for a 8 cylinder.

Existing static pressure in. Cfm stands for cubic feet per minute so an electrical fan with a 1 500 cfm rating will push 1 500 cubic feet of air per minute. The calculator is a versatile energy management tool which accepts measured current full load amps or rated horsepower inputs. When a fan is set to its maximum speed the cfm is calculated by utilizing both the volume of air and the rate at which the fan blades move.