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Double acting recip pump displaced volume, hp and piston speed

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  1. Given known process conditions, plunger stroke length and diameter, number of plungers, and strokes per minute, you can determine the displaced volume per minute and the required pump horsepower.
  2. The guide also determines if the plunger speed is excessive.
  1. These calculations are only valid for a double acting positive displacement pump
  1. Igor Karassik et al, Pump Handbook (McGraw-Hill Book Company, 1976), 3-2 to 3-5.
Step 1: Double-Acting Recip Pump Displaced Volume, HP and Piston Speed
1.1 Number of plungers
1.2 Plunger diameter (in)
1.3 Piston rod diameter (in)
1.4 Stroke length (in)
1.5 Strokes per minute
Step 2: Brakehorsepower (Assumes zero slip & 100% VE)
2.1 Suction Pressure (psi)
2.2 Discharge Pressure (psi)
2.3 Mechanical Efficiency
Step 3: Solve
3.1 Proof steps
3.2 Solve for Double-Acting Recip Pump