Q: When should you use static pressure vs. total pressure in FEI calculations?

he choice between static pressure and total pressure in FEI calculations depends on the fan type and system configuration : Use total pressure for ducted or housed fan systems where velocity pressure is significant, such as centrifugal fans connected to ventilation ducts. Use static pressure for free-air or low-speed systems , where velocity pressure has minimal impact — common in axial fans with open discharge. The AMCA 208 and 214 standards guide which pressure to use, ensuring that the FEI value reflects accurate, real-world performance for the specific fan setup.

Q: When should you use static pressure vs. total pressure in FEI calculations?

he choice between static pressure and total pressure in FEI calculations depends on the fan type and system configuration : Use total pressure for ducted or housed fan systems where velocity pressure is significant, such as centrifugal fans connected to ventilation ducts. Use static pressure for free-air or low-speed systems , where velocity pressure has minimal impact — common in axial fans with open discharge. The AMCA 208 and 214 standards guide which pressure to use, ensuring that the FEI value reflects accurate, real-world performance for the specific fan setup.

Question 1

When should you use static pressure vs. total pressure in FEI calculations?

fanselectionsoftware · Accepted Answer

he choice between static pressure and total pressure in FEI calculations depends on the fan type and system configuration:

Use total pressure for ducted or housed fan systems where velocity pressure is significant, such as centrifugal fans connected to ventilation ducts.
Use static pressure for free-air or low-speed systems, where velocity pressure has minimal impact — common in axial fans with open discharge.

The AMCA 208 and 214 standards guide which pressure to use, ensuring that the FEI value reflects accurate, real-world performance for the specific fan setup.

Question 2

When should you use static pressure vs. total pressure in FEI calculations?

fanselectionsoftware · Accepted Answer

he choice between static pressure and total pressure in FEI calculations depends on the fan type and system configuration:

Use total pressure for ducted or housed fan systems where velocity pressure is significant, such as centrifugal fans connected to ventilation ducts.
Use static pressure for free-air or low-speed systems, where velocity pressure has minimal impact — common in axial fans with open discharge.

The AMCA 208 and 214 standards guide which pressure to use, ensuring that the FEI value reflects accurate, real-world performance for the specific fan setup.