To download the below  and all other Useful Books and calculations Excel sheets please click here 

To download the below  and all other Useful Books and calculations Excel sheets please click here 

Calculation Formulas for Process Fans

Electrical Power Requirement for Fan

The required electrical power can be calculated as:

Total Pressure Increase (Rough Estimation)

The total pressure increase p of a fan can be calculated as:

Influence of Fan Speed on Volume flow, Static Pressure and Power Consumption:

The volume flow depends on the fan speed as:

The static pressure depends on the fan speed as:

The electrical power requirement depends on the fan speed as: