Scope of Standard: ANSI/HI 20.3 presents a simplified method to predict normally attainable efficiency levels at the best efficiency point for selected types of rotodynamic pumps when the rate of flow, total head per stage, net positive suction head available (NPSHA), and the service conditions are known. The standard provides guidelines on the following pump types:
What You Will Learn:
Applicable Markets: Most markets where centrifugal pumps are used.
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Content: Pump types and factors that influence efficiency such as surface roughness, internal pump clearances and different types of pumpage, (graphs portray the relationship of pump efficiency versus different parameters), special impeller designs, such as those intended to increase suction specific speed or provide a specific curve shape can reduce the attainable efficiency, thrust balance devices as well as an example on how to attain efficiency of a solids handling submersible sewage pump.
Hot Link to TOC: http://www.pumps.org/estore/stdi/20.3b.pdf
Who Should Buy This Standard: For pump specifiers who must estimate pump performance, this standard serves assessment guide for pump efficiency. Pump end users and engineering consulting firms can use the standard as a guide to determine how efficiency was predicted for pumps.