Electric Fan Cfm Calculator

Cfm volts x amps x 3 412 δt x 1 08 δt f volts amps.

Electric fan cfm calculator.

This would be 3 1416 x 0 25 square feet x 800 feet 628 32 cubic feet per minute at 1200 rpm. With the motor load calculator you can quickly estimate annual energy use and cost for any electric motor. 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. 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.

Calculate the cfm volumetric flow of air at 1 200 rpm. Existing static pressure in. 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. Centrifugal blower fan squirrel cage blower.

Enter any two parameters to get the third. 1 250 cfm for a 4 cylinder 2 000 cfm for a 6 cylinder 2 500 cfm for a 8 cylinder. 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. 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.

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. 1 250 cfm for a 4 cylinder 2 000 cfm for a 6 cylinder. 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. Rise f δt volts amps.

The calculator is a versatile energy management tool which accepts measured current full load amps or rated horsepower inputs. Merely it can also be termed as airflow. 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. Run the fan for 15 to 20 minutes after showering or bathing to expel all the excess moisture.

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. Cfm btu s δt x 1 08 input. 1 electric heat temperature rise method. Follow this general guideline.