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The 1 0 % NaOH solution is fed to the first unit of a three - effect evaporator at a temperature of 3 0 0
The NaOH solution is fed to the first unit of a threeeffect evaporator at a temperature of K with a flow rate of kgs the pressure in the third effect is kN however, the NaOH taken from this effect is The heating temperature of the solution is kJkgK can be taken. The boiling point increase will not be neglected.The steam is saturated water vapor at a pressure of kN and is fed to the first effect and the condensate is saturated. it is separated as a liquid. If the heating areas are equal, calculate the areas, temperature differences and steam consumption.
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