| CALC : Flow : Flowrate 023 : API 14E Panhandle Equation Friction Pressure Loss From Gas Flow Rate : Calculator
Description : Calculate the friction pressure loss ΔPf from the inlet pressure P1 and the the gas mole flow rate Q using the Panhandle equation.
Discussion : The efficiency factor accounts for the condition and hence roughness of the pipe wall. The following values are listed
- 1.0 brand new pipe
- 0.95 good operating conditions
- 0.92 average operating conditions
- 0.85 unfavourable operating conditions
The equation coefficient has been factored for SI units.
Figures :
Input Variables :
- E = Panhandle Equation Pipe Condition Flow Efficiency Factor
- L = Section Length
- P1 = Fluid Inlet Absolute Pressure
- Q = Fluid Mole Flow Rate
- S = Fluid Gas Specific Gravity
- T1 = Fluid Absolute Temperature
- Z = Fluid Dimensionless Compressibility Z Factor
- d = Section Internal Diameter
Output Variables :
- ΔPf = Fluid Friction Pressure Loss
- P2 = Fluid Outlet Absolute Pressure
Calculation :
P2 = √( P1 2 - 3.1771E3 S 0.961 Z T1 L Q / ( E d 2.53 ) 1 / 0.51 )
ΔPf = P1 - P2
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