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[EnergyPlus_Support] Fan Power Pressures and Efficiencies - Are the calculations based on Pstat or Pt



Are the calculations based on total pressure or static pressure rise?

Field: Supply Fan Total Efficiency
Enter the total efficiency of the supply fan. This is the ratio of the power delivered to the air to
the electrical input power at maximum flow. This is also the product of the fan motor
efficiency and fan (impeller) efficiency. The motor efficiency is the power delivered to the
shaft divided by the electrical power input to the motor. The fan efficiency is the power
delivered to the air divided by the shaft power. The power delivered to the fluid is the mass
flow rate of the air multiplied by the pressure rise divided by the air density. Must be greater
than 0 and less than or equal to 1. The default is 0.7.

Field: Supply Fan Delta Pressure
Enter the pressure rise in Pa at full flow and standard conditions. Standard conditions are
considered 20o C at sea level, 101325 Pa. The default is 1000 Pa.



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