Ray Hardee is a principal founder of Engineered Software, creators of PIPE-FLO and PUMP-FLO software. At Engineered Software, he helped develop two training courses and teaches these courses internationally. He may be reached at firstname.lastname@example.org.
To sell the idea of performing assessments on pumping systems, the first step is to determine how much the current system costs to operate. After performing the assessment, one can see ways to improve the system. The third step is to determine how much it will cost to operate the system once the suggested improvements are made. These financial models may very well be the best tools to communicate with non-engineers and management.
All my future Pumps & Systems articles will follow the method outlined in the ISO/ASME standard when assessing a pump system so you can better understand how to assess and improve the system in your facility. In next month’s column, we will look at additions made to a waste collection system and why the system no longer operated as designed.
Methods for System Improvement
The standard includes informative annexes providing recommendations and examples for conducting an assessment. Annex B provides a wealth of examples of efficient system operation and energy reduction. The system improvement can be broken down into four different approaches:
- Reduce system head
- Reduce system flow rate
- Operate equipment closer to best efficiency
- Minimize system run time
Looking at the big picture, we can see each of the above suggestions provides a way to use the system more efficiently. As always, the devil is in the details.