ANSI/HI 9.6.3-Rotodynamic Pumps – Guideline for Operating Regions
Overview:
This standard defines the preferred operating region (POR) for rotodynamic pumps based on pump specific speed. The allowable operating region (AOR) is defined, along with application and design factors that are considered by the manufacturer in the setting of the AOR are detailed. The reader will learn the effects of operating away from the pumps best efficiency point (BEP).
This guideline applies to rotodynamic pumps in all markets. It aids the specifying engineer and system designer with a base understanding of pump operating regions, which supports pump selection and the design of the system to achieve reliable and efficiency operation. The pump end user should reference this guideline to understand potential causes of inefficient operation and reliability issues.
What’s New:
This standard supersedes the ANSI/HI 9.6.3-2018 edition. Updates in the new edition include:
- Pump preferred operating regions (POR)
- Pump allowable operation regions (AOR)
- Factors that define the POR
- Factors affecting the determination of the AOR
- Effect of the operating point on reliability and efficiency
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