Math Solutions: Additional Pump Performance And Efficiency Calculations
By Daniel Theobald, "Wastewater Dan"
Wastewater consultant and trainer Dan Theobald (“Wastewater Dan”) closes the loop on pump performance.
Pump performance and efficiency calculations required for certification exams or for operating your plant may include numerous head pressure calculations, diverse horsepower calculations, or individual applied efficiency calculations. Combined with the first installment of such calculations, the definitions and solutions herein provide a foundation for operators and engineers to achieve pump optimization.
Definitions of various pump performance efficiency calculations
Suction Lift Head Pressure-Feet: the distance from where the liquid is taken to the centerline of the pump.
Discharge Head Pressure-Feet: the distance in feet that the liquid leaves a pum
Water Horsepower: a ratio of water horsepower out divided by the mechanical horsepower into the pump
Total Dynamic Head (TDH) Pressure-Feet: the total equivalent height in feet that a fluid is to be pumped, taking into account friction losses in the pipe.
Pump Performance Efficiency Calculations
Calculate total dynamic head (TDH) pressure-ft. using inches of mercury:
Calculate TDH pressure-ft. using discharge head psi:
Calculate TDH pressure-ft. using water horsepower:
Using TDH pressure-ft. to calculate Inches of mercury:
Using TDH pressure-ft. to calculate discharge psi:
Playlist of 10+ Pump Performance Efficiency Calculations
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About Dan Theobald:
Known in the industry as “Wastewater Dan,” Daniel L. Theobald, proprietor of Environmental Services (www.esdlt.com), is a professional wastewater and safety consultant/trainer. He has more than 24 years of hands-on industry experience operating many variants of wastewater treatment processing units and is eager to share with others his knowledge about water conservation.
Theobald serves as an active consultant for industries looking to achieve and maintain improved wastewater treatment at reduced cost. He is a Lifetime Member of the Who’s Who Registry of Professionals and holds numerous certifications from wastewater management regulatory boards and professional organizations. Theobald contributed one chapter to the Water Environment Federation’s (www.wef.org) Manual of Practice # 37 (MOP-37), a technical manual resource guide for biological nutrient removal, published in 2013.