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Open-source automated centrifugal pump test rig.

Clayton S Semenzin1,2, Martin Mapley1,2, Eric Wu2,3

  • 1School of Engineering and Built Environment, Griffith University, Southport, Australia.

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Summary
This summary is machine-generated.

Developing miniature pumps requires extensive testing. This study presents an automated test rig for generating reliable pump performance and efficiency curves, crucial for small pump design and development.

Keywords:
Efficiency curvesPerformance curvesSmall pumps

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Area of Science:

  • Mechanical Engineering
  • Fluid Dynamics
  • Additive Manufacturing

Background:

  • Standard design methods for large industrial pumps are inadequate for specialized miniature pumps due to scaling effects.
  • Miniature pump development necessitates extensive experimental testing for viable prototypes.
  • Assessing hydraulic design, specifically pump performance and efficiency curves, is critical.

Purpose of the Study:

  • To develop an automated test rig for generating reliable and repeatable pump performance (pressure-flow rate) and efficiency curves.
  • To create a customizable apparatus suitable for a range of small pump sizes.
  • To facilitate the evaluation of hydraulic performance for diverse miniature pump designs.

Main Methods:

  • Utilized 3D printing for customizable pump impellers and volutes, enabling rapid prototyping.
  • Implemented an automated test loop to incrementally control flow rate from 0 L/min to maximum.
  • Recorded pressure, flow rate, voltage, and current at each increment to generate performance and efficiency data.

Main Results:

  • The automated test rig successfully generated pressure-flow rate (P-Q) and efficiency curves.
  • Repeatability tests demonstrated low variations: ±3 mmHg (400 Pa) in pressure and ±2% in hydraulic efficiency.
  • The apparatus proved effective for comparing and evaluating the hydraulic performance of different pump designs.

Conclusions:

  • The developed automated test rig provides a reliable and repeatable method for characterizing miniature pump performance.
  • The system's flexibility, enabled by 3D printing and automation, supports efficient design iteration and evaluation.
  • This tool is valuable for researchers and engineers needing to assess and compare miniature pump hydraulic designs.