How to increase pressure in a system

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SUMMARY

This discussion focuses on increasing pressure in a testing system for high-pressure water pumps. The user seeks to achieve a flow rate of 250 gallons per minute (gpm) at 7 bar pressure. A variable frequency drive pump is mentioned as a potential solution for adjusting pressure and flow rates, but its high cost is a concern. The use of a back pressure regulator is suggested as a practical method to maintain desired pressure while measuring flow downstream.

PREREQUISITES
  • Understanding of Bernoulli's principle and energy balance in fluid systems
  • Familiarity with flow measurement techniques and equipment
  • Knowledge of pump operation and characteristics, specifically high-pressure water pumps
  • Experience with pressure regulation devices, such as back pressure regulators
NEXT STEPS
  • Research the specifications and operation of back pressure regulators for flow measurement
  • Explore the principles of Bernoulli's equation in practical applications
  • Investigate variable frequency drive pumps and their cost-benefit analysis
  • Learn about the design and implementation of testing systems for hydraulic performance
USEFUL FOR

Engineers, fluid dynamics specialists, and technicians involved in pump testing and performance evaluation will benefit from this discussion.

yaljared
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I want to make a testing system to test a high pressure water pumps. I need to know how much is the flow in a certain pressure. I bought a flow meter to measure the flow but I couldn't simulate the pressure I need. I DON'T know if there is a kind of valve that can increase the pressure to make the pump (for example) give 250 gpm at 7 bar

who can help me on this?
 
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A variable frequency drive pump can easily be used to change the pressure and flow rate if u wish , but unfortunately this kind of pump is very expensive , though there is always a relationship between pressure and flow rate in any system using bernoulli energy balance where static pressure , velocity "dynamic pressure" and potential energy are balanced between 2 points through the system , using a diffuser somewhere in the system will decrease your velocity and increase your pressure.
 
Thank you Firava.
But I don't think the frequency drive will help me. I want to test the performance of the pump I assemble.Wether it gives the required flow under a certain pressure.

Thanks
 
Can't you simply put a back pressure regulator on the outlet of your pump and measure flow rate downstream of that?

Example:
Inlet -> Pump -> Pressure Gage -> Back pressure regulator (& relief valve) -> Flow measurement at Patm.
 

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