A quadruple effect evaporator system connected for Mixed Feeding (III-IV-I- II)is used to concentrate a solution of non-electrolytes from 8% solids to 40% solids. The feed enters at 210C and the last effect is maintained at 500C. Saturated steam at 2500C is supplied in the first effect. Cp of all solutions may be assumed constant at 4.18 kJ/kgK. Heat transfer coefficients are 2200, 1850, 1750 and 1500 W/m2K in the first, second, third and fourth effects respectively. If the feed rate is 2200 kg/hr, find the evaporator areas.

Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
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A quadruple effect evaporator system connected for Mixed Feeding (III-IV-I-
II)is used to concentrate a solution of non-electrolytes from 8% solids to 40%
solids. The feed enters at 210C and the last effect is maintained at 500C.
Saturated steam at 2500C is supplied in the first effect. Cp of all solutions may
be assumed constant at 4.18 kJ/kgK. Heat transfer coefficients are 2200, 1850,
1750 and 1500 W/m2K in the first, second, third and fourth effects
respectively. If the feed rate is 2200 kg/hr, find the evaporator areas.
Transcribed Image Text:A quadruple effect evaporator system connected for Mixed Feeding (III-IV-I- II)is used to concentrate a solution of non-electrolytes from 8% solids to 40% solids. The feed enters at 210C and the last effect is maintained at 500C. Saturated steam at 2500C is supplied in the first effect. Cp of all solutions may be assumed constant at 4.18 kJ/kgK. Heat transfer coefficients are 2200, 1850, 1750 and 1500 W/m2K in the first, second, third and fourth effects respectively. If the feed rate is 2200 kg/hr, find the evaporator areas.
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