Pump Efficiency

The Pump Volumetric Efficiency equation calculates a pump's Volumetric Efficiency (Eff_vol) in percent (%) given it's Actual Flow Rate Output (Q_act) and Theoretical Flow Rate Output (Q_theo).

INSTRUCTIONS: Choose units and enter the following:

• (Q_act) Actual flow rate output
• (Q_theo) Theoretical flow rate output

The Math / Science

Pumps operate by some mechanism (typically reciprocating or rotary), and consume energy to perform mechanical work by moving the fluid. Pumps operate via many energy sources, including manual operation, electricity, engines, or wind power, come in many sizes, from microscopic for use in medical applications to large industrial pumps.

Mechanical pumps serve in a wide range of applications such as pumping water from wells, aquarium filtering, pond filtering and aeration, in the car industry for water-cooling and fuel injection, in the energy industry for pumping oil and natural gas or for operating cooling towers. In the medical industry, pumps are used for biochemical processes in developing and manufacturing medicine, and as artificial replacements for body parts, in particular the artificial heart and penile prosthesis.

Single stage pump – When a casing contains only one revolving impeller, it is called a single stage pump.

Double/multi-stage pump – When a casing contains two or more revolving impellers, it is called a double or multi-stage pump.

Related Equations

Industrial Fluid Equations Collection

Pumping Calculators

• Volume Pumped over time by Pump Flow-rate
• Time to Pump Deadweight Tonnage: Computes time to pump an amount of oil measured by DWT at a pumping rate.   It also returns the volume pumped in barrels.
• Time to Pump Volume by Flow-rate: Computes the time to pump an amount of fluid (e.g., oil) based on a volume and pump rate.
• Duplex Pump Output: Barrels per stroke from a duplex pump.
• Triplex Pump Output: Barrels per stroke from a triplex pump.
• Quintuplex Pump Output: Barrels per stroke from a quintuplex pump.
• Barrel Production: Computes the total volume (barrels) produced over a period of time based on the production rate and duration.
• Annular Velocity: Compute the fluid flow velocity, based on the flow rate and pipe dimensions.
• Mud Buoyancy: Computes the buoyancy in mud
• Volume of a Pipe: Computes the volume of a pipe.
• Weight of Pipe Contents: Computes the weight (mass) based on density and pipe dimensions.
• Density of Oil:
  • Crude at (48° API): 790.0 kg/m³
  • Crude at (40° API): 825.0 kg/m³
  • Crude at (35.6° API): 847.0 kg/m³
  • Crude at (32.6° API): 862.0 kg/m³
• Energy in Crude Oil: 5800000.0 BTU/bbl
• Pump Efficiency

References

This description was obtained from wikipedia.