In this case, the process take place at a fixed temperature regime cooling with a liquid heat transfer agent. Subject of calculations: Mixing in a reactor with a 2-stage Lightnin A310. No chemical reaction occurs. Additional technical information. Tank:

  • Elliptical bottom – conventional jacket
  • Inside diameter – 1800 mm
  • Total height- 2200 mm
  • Volume of media – 5000 liter.
  • Material – stainless steel (generalized)
  • Thermal resistance of fouling – 0.0002 (m2*K)/W
  • Mass – unknown
  • Wall thickness – 6 mm.
  • Tank head type – Absent

Jacket (Covers bottom – one section):

  • Height, Hlow – 1530 mm
  • Heat transfer area – 11.5 m2
  • Enhancing device – Absent
  • Width – 50 mm
  • Wall thickness – 6 mm.

Baffle (Flat, at distance to the tank wall):

  • Number = 4
  • Width = 160 mm;
  • Length = 1700 mm;
  • Distance from bottom = 450 mm.
  • Distance from the wall = 50 mm
  • Angle to radius = 0 deg.

Impeller:

  • 2-stage Lightnin A310
  • Tip diameter = 1000 mm
  • Distance between stages = 850 mm
  • Distance from bottom = 400 mm.
  • Rotational speed = 100 rpm
  • Power of drive = 5 kW

Media properties:

  • Density of media – 1050 kg/m3
  • Viscosity of media – 2 cP.

Heat Transfer Data   a Fixed Temperature Regime = 60 C

VisiMix Turbulent for mathematical modeling of turbulent mixing in reactor with 2-stage Lightnin impeller.

Problem description:

You will obtain some general data on your mixing equipment, which will enable you to evaluate the general suitability of your equipment, compare different designs, etc. These parameters are used as basic data for calculations of other mixing problems.

Initial data

Tank Flat bottom:

  • Inside diameter = 3000 mm
  • Total volume = 35 cub.m
  • Volume of media = 30 cub.m

Baffle (Flat, attached to the tank wall):

  • Number = 4
  • Width = 300 mm;
  • Length = 4200 mm;
  • Distance from bottom = 0 mm.
  • Angle to radius = 0 deg.

Impeller:

  • 2-stage Lightnin A310
  • Tip diameter = 1300 mm
  • Distance between stages = 2000 mm
  • Distance from bottom = 375 mm.
  • Rotational speed = 80 rpm
  • Power of drive = 10 kW

Media properties:

  • Type of media = Newtonian
  • Density = 1100 kg/cub. m
  • Dynamic viscosity = 4.5 cP
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Test 6 – Heat transfer fixed temperature regime

In this case, the process take place at a fixed temperature regime cooling with a liquid heat transfer agent.

Subject of calculations:

Mixing in a reactor with a 2-stage Lightnin A310. No chemical reaction occurs.

Additional technical information.

Tank:

  • Elliptical bottom – conventional jacket
  • Inside diameter – 1800 mm
  • Total height- 2200 mm
  • Volume of media – 5000 liter.
  • Material – stainless steel (generalized)
  • Thermal resistance of fouling – 0.0002 (m2*K)/W
  • Mass – unknown
  • Wall thickness – 6 mm.
  • Tank head type – Absent

Jacket (Covers bottom – one section):

  • Height, Hlow – 1530 mm
  • Heat transfer area – 11.5 m2
  • Enhancing device – Absent
  • Width – 50 mm
  • Wall thickness – 6 mm.

Baffle (Flat, at distance to the tank wall):

  • Number = 4
  • Width = 160 mm;
  • Length = 1700 mm;
  • Distance from bottom = 450 mm.
  • Distance from the wall = 50 mm
  • Angle to radius = 0 deg.

Impeller:

  • 2-stage Lightnin A310
  • Tip diameter = 1000 mm
  • Distance between stages = 850 mm
  • Distance from bottom = 400 mm.
  • Rotational speed = 100 rpm
  • Power of drive = 5 kW

Media properties:

  • Density of media – 1050 kg/m3
  • Viscosity of media – 2 cP.

Heat Transfer Data

 

a Fixed Temperature Regime = 60 C

What is the Heat Transfer Rate? W

What is the Wall temperature, media side?

What is the Overall heat transfer coefficient? W/(sq.m*K

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