• Duplex Pump Calculations
       
Input Field(s)    
Strokes/min (Ns)  
Stroke Length (S) in
Rod Diameter (Dr) in
Linear Diameter (Dl) in
Actual volumetric flow (Qa) gal/min
       
Output Field(s)      
Theretical Output (Qt) gal/min
Volumetric Efficiency (Veff.) %

  • Calculation Guide
  • Overview
    • Compute the theroetical flow rate and volumetric efficiency for duplex pumps
  • Equations
    • Qt = 0.0136 Ns S [Dl2 - Dr2/2]
    • Veff = Qa/Qt
    • --------------------------------------------------
    • Qt - Theoretical pump output, gal/min
    • Ns - Strokes/minute
    • S - Stroke Length, in
    • Dl - Linear Diameter, in
    • Dr - Rod Diameter, in
    • Qa - Actual Pump Output, gal/min
    • Veff - Volumetric Efficiency
  • Assumptions
    • n/a
  • Reference
    • Standard Handbook of Petroleum and Natural Gas Engineering; Lyons, Plisga
  • Unit Conversion Tool