In this case, the semi batch process need to be cooling with a liquid heat transfer agent.  No chemical reaction occurs. The lower limit of temperature is 40 C and the upper is 140 C. Subject of calculations: Mixing in a reactor with a 2-stage Lightnin A310.  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:
  • Cooling liquid agent – Water
  • Inlet temperature = 20 C
  • Flow rate = 3.2 m3/h
                                  For this process, we want to determine the following heat transfer parameters:
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Test 7 – Heat transfer semi batch

In this case, the semi batch process need to be cooling with a liquid heat transfer agent. 

No chemical reaction occurs. The lower limit of temperature is 40 C and the upper is 140 C.

Subject of calculations:

Mixing in a reactor with a 2-stage Lightnin A310. 

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:

  • Cooling liquid agent – Water
  • Inlet temperature = 20 C
  • Flow rate = 3.2 m3/h

For this process, we want to determine the following heat transfer parameters:

Heat Transfer Rate – maximum value reached, approximate = W

The upper temperature limit is reached

Media Temperature: What is the maximum value reached?

Overall heat transfer coefficient: After about 175 min it starts to decrease

Which is its maximum achieved value (approximate)?

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