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In order to concentrate 5,000 kg/h of an NaOH solution containing 10 wt.% NaOH to a 25 wt.% solution, a single effect evaporator is being used with an area of 25.9 m². The feed enters at 20.5 °C. Saturated steam at 120 °C is used for heating and the pressure in the vapor space of the evaporator is 60.1 kPa abs. Calculate the kg/h of steam used and the over-all heat transfer coefficient.

In order to concentrate 5,000 kg/h of an NaOH solution containing 10 wt.% NaOH to a 25 wt.% solution, a single effect evaporator is being used with an area of 25.9 m². The feed enters at 20.5 °C. Saturated steam at 120 °C is used for heating and the pressure in the vapor space of the evaporator is 60.1 kPa abs. Calculate the kg/h of steam used and the over-all heat transfer coefficient.

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
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Heat and Mass Transfer

Evaporation

3. In order to concentrate 5,000 kg/h of an NaOH solution containing 10 wt.% NaOH to a 25 wt.% solution, a single effect evaporator is being used with an area of 25.9 m². The feed enters at 20.5 °C. Saturated steam at 120 °C is used for heating and the pressure in the vapor space of the evaporator is 60.1 kPa abs. Calculate the kg/h of steam used and the over-all heat transfer coefficient.
Transcribed Image Text:3. In order to concentrate 5,000 kg/h of an NaOH solution containing 10 wt.% NaOH to a 25 wt.% solution, a single effect evaporator is being used with an area of 25.9 m². The feed enters at 20.5 °C. Saturated steam at 120 °C is used for heating and the pressure in the vapor space of the evaporator is 60.1 kPa abs. Calculate the kg/h of steam used and the over-all heat transfer coefficient.
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