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) is the power delivered to the fluid (shaft power). To size the actual motor, you must account for mechanical losses in the gearbox and seals.
NRe=ρ⋅N⋅D2μcap N sub cap R e end-sub equals the fraction with numerator rho center dot cap N center dot cap D squared and denominator mu end-fraction = Fluid density ( = Rotational speed ( = Impeller diameter ( = Dynamic viscosity ( Impeller Power Consumption (
Comprehensive Guide to Agitator Design Calculations (with Excel Templates)
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The “agitator design calculation xls” has become an indispensable tool for process and mechanical engineers worldwide. By integrating key fluid mechanics principles into an accessible, transparent, and iterative platform, these Excel spreadsheets bridge the gap between manual hand calculations and expensive commercial software.
The spreadsheet should automatically compute the following values based on your inputs: : is the rotational speed in revolutions per second (RPS). Power Requirement ( ) : ) is the power delivered to the fluid (shaft power)
Before delving into the "how," it is essential to understand the "why." Excel spreadsheets offer a unique combination of flexibility, transparency, and accessibility that often surpasses complex simulation software for initial sizing and troubleshooting tasks.
Do you need assistance mapping out specific or formulas for structural limits like shaft deflection? Share public link
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Define the required pumping rate or "intensity" of agitation (e.g., mild, medium, or violent). 2. Impeller & Speed Selection
What is your specific (e.g., solid suspension, blending, gas dispersion)?
Tq=P2π⋅Ncap T sub q equals the fraction with numerator cap P and denominator 2 pi center dot cap N end-fraction Tqcap T sub q : Torque in N ⋅ m. D. Pumping Capacity (Q) Calculates how much fluid the impeller moves.
The core of your XLS will be the power calculation, which varies based on the flow regime.
. For non-Newtonian fluids, apparent viscosity under shear must be evaluated. Process Requirements
