The is more than a spreadsheet; it is a digital notebook containing decades of mixing engineering wisdom. Whether you are designing a 10-liter lab reactor or a 50,000-gallon fermentation tank, using a verified repack ensures your agitator will deliver the correct flow pattern, power draw, and mechanical reliability.
values based on the calculated Reynolds number and selected impeller type. Conclusion
τ=P2π⋅Ntau equals the fraction with numerator cap P and denominator 2 pi center dot cap N end-fraction Bending Moment
P=Np⋅ρ⋅N3⋅D5cap P equals cap N sub p center dot rho center dot cap N cubed center dot cap D to the fifth power = Power (Watts) = Rotational speed (revolutions per second) = Impeller diameter (meters) agitator design calculation xls repack
P=Np⋅ρ⋅N3⋅D5cap P equals cap N sub p center dot rho center dot cap N cubed center dot cap D to the fifth power
) should generally not exceed 75% of the first critical speed ( Nccap N sub c
T=P2πNcap T equals the fraction with numerator cap P and denominator 2 pi cap N end-fraction The is more than a spreadsheet; it is
): The new design must not exceed the current motor's power capacity. Existing Gearbox Torque ( Tmaxcap T sub m a x end-sub
A "repack" typically refers to a consolidated, user-friendly version of engineering spreadsheets that combine multiple design modules into a single workbook. These tools are used to calculate:
Turnover Rate=QVTurnover Rate equals the fraction with numerator cap Q and denominator cap V end-fraction Tip Speed (Shear Indicator) The is more than a spreadsheet
Dropdown menus for 304SS, 316SS, and Carbon Steel with their respective allowable stress values.
Motor Power (Pmotor)=Pηgearbox⋅ηseal⋅Safety FactorMotor Power open paren cap P sub motor end-sub close paren equals the fraction with numerator cap P and denominator eta sub gearbox end-sub center dot eta sub seal end-sub end-fraction center dot Safety Factor Standard Mechanical Seal Efficiency ( ηsealeta sub seal end-sub ): Safety Factor: Typically to handle fluid surges or startup torque. 4. Key Process Indicators for Verification
This updated version (v3.2) includes: