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Evaporator A double-effect evaporator is used to concentrate 5.7 kg/s of 22% NaCl solution at 37°C to 43%. The first and second- effect operates at 20 kPag and 14 kPag, respectively. Saturated steam at 2.3 atm enters at 5 kg/s which leaves the first effect condensed. The surface areas of the two effects are equal. Consider the atmospheric pressure equal to 101,300 Pa. a. Provide the temperature profile of each effect. b. What amounts of vapor leave the effects 1 and 2? C. Calculate the steam economy.

Evaporator A double-effect evaporator is used to concentrate 5.7 kg/s of 22% NaCl solution at 37°C to 43%. The first and second- effect operates at 20 kPag and 14 kPag, respectively. Saturated steam at 2.3 atm enters at 5 kg/s which leaves the first effect condensed. The surface areas of the two effects are equal. Consider the atmospheric pressure equal to 101,300 Pa. a. Provide the temperature profile of each effect. b. What amounts of vapor leave the effects 1 and 2? C. Calculate the steam economy.

Introduction to Chemical Engineering Thermodynamics
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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Evaporator A double-effect evaporator is used to concentrate 5.7 kg/s of 22% NaCl solution at 37°C to 43%. The first and second- effect operates at 20 kPag and 14 kPag, respectively. Saturated steam at 2.3 atm enters at 5 kg/s which leaves the first effect condensed. The surface areas of the two effects are equal. Consider the atmospheric pressure equal to 101,300 Pa. a. Provide the temperature profile of each effect. b. What amounts of vapor leave the effects 1 and 2? Calculate the steam economy. C.
Transcribed Image Text:Evaporator A double-effect evaporator is used to concentrate 5.7 kg/s of 22% NaCl solution at 37°C to 43%. The first and second- effect operates at 20 kPag and 14 kPag, respectively. Saturated steam at 2.3 atm enters at 5 kg/s which leaves the first effect condensed. The surface areas of the two effects are equal. Consider the atmospheric pressure equal to 101,300 Pa. a. Provide the temperature profile of each effect. b. What amounts of vapor leave the effects 1 and 2? Calculate the steam economy. C.
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