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Can you please solve this question with clear steps and answer, its a very important question for my exam. A double - effect evaporator is
Can you please solve this question with clear steps and answer, its a very important question for my exam. A doubleeffect evaporator is used to concentrate kgh of caustic soda solution from to
by wt NaOH. For this purpose, a backward feed arrangement is used. The feed enters the
evaporator at K Process steam at kPa K kJkg is available and in the
second effect a pressure of kPa K kJkg is maintained. First evaporator is
maintained at kPaC kJkg Calculate the heating surface area in both the
effects. Calculate the steam consumption and evaporation in each effect. Neglect boiling point rise.
The overall heat transfer coefficients in the first and second effects are and Wm
K
respectively. Take a specific heat of kJkgK for all caustic streams.
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