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Agitator Design Spreadsheet Version 1.2 Code - EEUA December 20, 2017

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Inputs Vessel MOC Liquid Density Liquid Viscosity

p µ

Required Rotation

N

Power Number Np Reynolds Number Nre

SS304 1498 12 0.012 90 1.5

Motor Position Motor HP Motor HP Req. Shaft Seal Shaft Support Baffle

kg/m3 CP N.s/m2 RPM RPS

5 (as per graph) 69675.73

Vertical 5 4.2 Single Mechanical Required Yes

SHAFT DIA MOTOR HP

CALC. INPUTS

COMMON

Inputs MOC of Vessel / Shaft Type of Impeller Motor HP (cal. available) Sweep Dia. of Impeller Shaft Dia. (cal. available) Vessel Dimension

For Shaft Dia. Cal.

75

388

Vessel MOC Output RPM Motor HP Vessel Dimension Sweep Dia. of Impeller

For Motor HP Cal. Liquid Density Liquid Viscosity Output RPM Baffle/Unbaffle vessel Type of Impeller (Np) Vessel Diameter Sweep Dia. of Impeller

1830

ID

72.95 75

SHAFT DIA. REQ. SHAFT DIA.

90 2700

610

SWEEP DIA.

400 388

Inputs for Reynolds Number (Nre) Cal. : Liquid density & viscosity, Output RPM, Sweep dia.

Impellers Np Graph available for design cal.

Anchor

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Chemineer HE-3 (Hydrofoil)

Agitator Design Spreadsheet

Input Sheet

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Agitator Design Spreadsheet

Screenshots

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Agitator Design Spreadsheet

Output - Sample Drawing (A2 Size)

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Agitator Design Spreadsheet

How to use Np Graph Example : Vessel Dia. 1830, Liquid density 1498 kg/m3, Viscosity 12 CP, 90 RPM, Turbine Impeller 610 dia. What will be the power required to operate the mixer if the tank was baffled? Also check without baffle Solution (a) baffled Vessel MOC Liquid Density         p Liquid Viscosity       µ Required Rotation     N

Power Number         Np Reynolds Number    Nre

SS304 1498 12 0.012 90 1.5

Motor Position Motor HP Motor HP Req. Shaft Seal Shaft Support Baffle

kg/m3 CP N.s/m2 RPM RPS

6 (as per graph) 69675.73

1830

Vertical 5 4.8 Single Mechanical Required Yes ID

610

SWEEP DIA.

6

69675 Nre Solution (b) unbaffled Vessel MOC Liquid Density         p Liquid Viscosity       µ Required Rotation     N

Power Number         Np Reynolds Number    Nre

SS304 1498 12 0.012 90 1.5

Motor Position Motor HP Motor HP Req. Shaft Seal Shaft Support Baffle

kg/m3 CP N.s/m2 RPM RPS

1.1 (as per graph) 69675.73

1830

ID

Vertical 3 2.1 Single Mechanical Required No

610

SWEEP DIA.

1.1 69675 Nre

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