Standardization of tank geometry prevents stagnant zones and optimizes fluid circulation loops.
) independent of viscosity. Power increases with the cube of the speed and the fifth power of the diameter. Total Motor Power Selection
Scaling up agitator design from laboratory to industrial scale is often based on maintaining constant:
You can find detailed technical guides and downloadable calculation templates from these authoritative engineering platforms: ResearchGate Major Steps in Successful Agitator Design which outlines the full design workflow. Verito Engineering : Provides practical guides on selecting the right motor and gearbox based on application load. IQS Directory : Offers a comprehensive breakdown of agitator types, parts, and uses for theoretical backing. ResearchGate Further Exploration Learn about the detailed Power Number calculation for different impeller types on ResearchGate Review the technical criteria for selecting industrial agitators Verito Engineering Read about the 1-to-10 Scale of Agitation DisperseTech to understand how to gauge mixing intensity. specific impeller type agitator design calculation pdf download verified
This is often missing in basic chemical engineering PDFs but essential for mechanical design.
While the formulas above seem straightforward, selecting the correct Npcap N sub p
To find the flow regime (Laminar vs. Turbulent): $$Re = \frac\rho \cdot N \cdot D^2\mu$$ Standardization of tank geometry prevents stagnant zones and
If you convert this guide into a PDF, you can verify your own calculations using the equations and example provided, then cross-check with open-source tools like the “Agitator Power Number Calculator” from Chemical Engineering Portal or the “Mixing Calculator” on MyEngineeringWorld.
NRe=1000⋅2⋅0.720.001=9800.001=980,000cap N sub cap R e end-sub equals the fraction with numerator 1000 center dot 2 center dot 0.7 squared and denominator 0.001 end-fraction equals 980 over 0.001 end-fraction equals 980 comma 000 , the flow regime is highly turbulent.
P=Kp⋅μ⋅N2⋅D3cap P equals cap K sub p center dot mu center dot cap N squared center dot cap D cubed (Where Kpcap K sub p is a laminar shape constant). The Power Number flattens into a constant value ( Total Motor Power Selection Scaling up agitator design
Below is a detailed guide you can use directly or convert into your own PDF.
Pmotor=430.260.85⋅1.20=607.42 Watts (0.61 kW)cap P sub motor end-sub equals 430.26 over 0.85 end-fraction center dot 1.20 equals 607.42 Watts open paren 0.61 kW close paren Select the next standard motor size, which is . 5. Verification Checklist for Engineering Audits