VNCI shares best practice on variable speed pump systems
18 Aug 2017

Pump speed adjustments provide the most efficient means of controlling pump flow. By reducing pump speed, less energy is imparted to the fluid and less energy needs to be throttled or bypassed. The Association of the Dutch Chemical Industry (VNCI) has put together a set of key advices to make the best use of variable speed pump systems.


This document first describes pump types (rotary pumps; reciprocating pumps and centrifugal pumps) and the interactions between pumps and pumping system. It then focuses on Variable Frequency Drive and finally this document provides a summary of the financial savings which can be achieved. VNCI main recommendations are provided in introduction :

  • Eliminate unnecessary uses
  • Minimize throttling
  • Assess pumping system suitability for current application.
  • Reduce pump speed or install appropriate speed control devices

Variable Speed Frequency Drive

Variable Frequency Drive (VFD) is being used to control the speed of the pump to attain the desired flow/head and temperature in the system. They represent a significant cost but will enable to achieve energy savings, improve process control and system reliability.
You can find the table above and all the details described above in the following document:
VNCI Best practice on variable speed pump systems

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