Electric Fan Cfm Calculator

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.

Electric fan cfm calculator.

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. This would be 3 1416 x 0 25 square feet x 800 feet 628 32 cubic feet per minute at 1200 rpm. Cfm btu s δt x 1 08 input. 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.

1 250 cfm for a 4 cylinder 2 000 cfm for a 6 cylinder 2 500 cfm for a 8 cylinder. 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. Centrifugal blower fan squirrel cage blower. Basic fan laws existing flowrate cfm.

Follow this general guideline. 1 electric heat temperature rise method. Merely it can also be termed as airflow. 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.

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. Rise f δt volts amps. 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. Run the fan for 15 to 20 minutes after showering or bathing to expel all the excess moisture.

The calculator is a versatile energy management tool which accepts measured current full load amps or rated horsepower inputs. Enter any two parameters to get the third. 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. Calculate the cfm volumetric flow of air at 1 200 rpm.

Cfm volts x amps x 3 412 δt x 1 08 δt f volts amps. 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. Bathroom vent fan cfm cubic feet per minute calculator. With the motor load calculator you can quickly estimate annual energy use and cost for any electric motor.