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For evaporation of viscous solution in a multiple effect evaporator, the preferred feeding scheme is _________________?

August 24, 2021March 3, 2019 by admin

For evaporation of viscous solution in a multiple effect evaporator, the preferred feeding scheme is _________________?

A. Forward
B. Backward
C. Parallel
D. None of these

Categories Chemical Heat Transfer

1000 Kg of liquid at 30°C in a well stirred vessel has to be heated to 120°C, using immersed coils carrying condensing steam at 150°C. The area of the steam coils is 1.2 m2 and the overall heat transfer co-efficient to the liquid is 1500 W/m2.°C. Assuming negligible heat loss to the surrounding and specific heat capacity of the liquid to be 4 kJ/kg.°C, the time taken for the liquid to reach desired temperature will be__________________?

A backward feed multiple effect evaporator is better than forward feed for concentrating cold feed, because it provides __________________?

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