An organic solution is to be concentrated from 15 wt.% to 65 wt.% in a single-effect evaporator. The inlet steam used is at 25 psig and comes out at 150°F. The vapor space in the evaporator has 20 inches Hg vacuum. Ten metric tons of organic solution per hour are fed at 80°F. The specific heat of the feed is 0.65 Btu/lb·°F and U = 800 BTU/h·ft2 ·°F. Find the amount of steam consumed in lb/h, the heating surface of the evaporator in ft2 , and the steam economy
An organic solution is to be concentrated from 15 wt.% to 65 wt.% in a single-effect evaporator. The inlet steam used is at 25 psig and comes out at 150°F. The vapor space in the evaporator has 20 inches Hg vacuum. Ten metric tons of organic solution per hour are fed at 80°F. The specific heat of the feed is 0.65 Btu/lb·°F and U = 800 BTU/h·ft2 ·°F. Find the amount of steam consumed in lb/h, the heating surface of the evaporator in ft2 , and the steam economy
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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Question
An organic solution is to be concentrated from 15 wt.% to 65 wt.% in a single-effect
evaporator. The inlet steam used is at 25 psig and comes out at 150°F. The vapor space in
the evaporator has 20 inches Hg vacuum. Ten metric tons of organic solution per hour are
fed at 80°F. The specific heat of the feed is 0.65 Btu/lb·°F and U = 800 BTU/h·ft2
·°F. Find
the amount of steam consumed in lb/h, the heating surface of the evaporator in ft2
, and the
steam economy
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