A forward feed triple effect evaporator is used to feed 13608 kg/hr of NaOH solution containing 10 wt% solute. The entering feed temperature is 37.8oC. It is to be concentrated to a 50% NaOH solution. The steam used to enter at 58.6 kPa gage. The absolute pressure in the vapor space of the third effect is 6.76 kPa. The heat transfer coefficient are U1=6246, U2=3407, and U3=2271 W/m2K. All effects must have the same area. Calculate the surface area and steam consumption (Hint: Assume no BPR at 1st and 2nd effect)
A forward feed triple effect evaporator is used to feed 13608 kg/hr of NaOH solution containing 10 wt% solute. The entering feed temperature is 37.8oC. It is to be concentrated to a 50% NaOH solution. The steam used to enter at 58.6 kPa gage. The absolute pressure in the vapor space of the third effect is 6.76 kPa. The heat transfer coefficient are U1=6246, U2=3407, and U3=2271 W/m2K. All effects must have the same area. Calculate the surface area and steam consumption (Hint: Assume no BPR at 1st and 2nd effect)
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
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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A forward feed triple effect evaporator is used to feed 13608 kg/hr of NaOH solution containing
10 wt% solute. The entering feed temperature is 37.8oC. It is to be concentrated to a 50% NaOH
solution. The steam used to enter at 58.6 kPa gage. The absolute pressure in the vapor space of
the third effect is 6.76 kPa. The heat transfer coefficient are U1=6246, U2=3407, and U3=2271
W/m2K. All effects must have the same area. Calculate the surface area and steam consumption
(Hint: Assume no BPR at 1st and 2nd effect)
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