Repack — Agitator Design Calculation Xls
Do you require equations for (like critical speed) or just the process power sizing ? Share public link
Typically, a safety factor of 15% to 25% is applied to handle starting torques and transient process fluctuations (such as density spikes during solids addition). 3. Process Dynamics: Pumping and Shear
Type (e.g., Rushton turbine, propeller, hydrofoil), impeller diameter ( ), and speed ( B. Power Number ( Npcap N sub p ) and Reynolds Number ( agitator design calculation xls repack
A professional repack includes a "Print Report" button that formats all inputs and outputs into a clean 2-page PDF for your project file or client submission.
Before diving into the spreadsheet calculations, it is essential to understand the core geometric relationships and dimensionless numbers that govern fluid mixing. Vessel and Impeller Geometry Do you require equations for (like critical speed)
[Module 1: Process Input] ├── Liquid Volume, Density, Viscosity └── Tank Dimensions (T, H, Dish type) │ ▼ [Module 2: Impeller Selection] ├── Type (Hydrofoil, PBT, Rushton) └── Dimensions (D, W, Blade count) & Np/Nq constants │ ▼ [Module 3: Fluid Dynamics Engine] ├── Reynolds Number calculation ├── Flow regime determination └── Power & Flow rate calculations │ ▼ [Module 4: Mechanical & Safety Output] ├── Torque, Bending, and Shaft Diameter validation └── Critical Speed check & Motor HP recommendation Key Excel Formulas Used:
Once the process loads (power and torque) are settled, your calculation spreadsheet must verify that the mechanical components will not deform or snap under operational stresses. Bending Moment ( Mbcap M sub b Process Dynamics: Pumping and Shear Type (e
While high-end Computational Fluid Dynamics (CFD) software offers precise modeling, a consolidated XLS spreadsheet remains the industry standard for initial sizing and rapid validation due to specific practical benefits:
Determines if the flow is laminar or turbulent. $$ N_Re = \fracD^2 \times N \times \rho\mu $$
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