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In order to concentrate 4536 kg/h of an NaOH solution containing 10 wt % NaOH to a 20 wt % solution, a single- 1) effect evaporator is being used with an area of 37.6 m². The feed enters at 21.1 °C (294.3 K). Saturated steam at 110 °C (383.2 K) is used for heating and the pressure in the vapor space of the evaporator is 51.7 kPa. Calculate the kg/h of steam used and the overall heat-transfer cocfficient.

In order to concentrate 4536 kg/h of an NaOH solution containing 10 wt % NaOH to a 20 wt % solution, a single- 1) effect evaporator is being used with an area of 37.6 m². The feed enters at 21.1 °C (294.3 K). Saturated steam at 110 °C (383.2 K) is used for heating and the pressure in the vapor space of the evaporator is 51.7 kPa. Calculate the kg/h of steam used and the overall heat-transfer cocfficient.

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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A single-effect evaporator operates at 13 kN/m. What will be the hcating surface necessary to concentrate 1.25 kg/s 2) of 10% caustic soda to 41% assuming a value of U of 1.25 kW/m*K, using steam at 390 K? The heating surface is 12 m below the liquid level. Boiling point rise of solution Feed Temperature Specific heat of feed Specific heat of the product Specific gravity of boiling product : 30 K : 291 K : 4.0 kJ/kgK : 3.26 kJ/kgK : 1.39
Transcribed Image Text:A single-effect evaporator operates at 13 kN/m. What will be the hcating surface necessary to concentrate 1.25 kg/s 2) of 10% caustic soda to 41% assuming a value of U of 1.25 kW/m*K, using steam at 390 K? The heating surface is 12 m below the liquid level. Boiling point rise of solution Feed Temperature Specific heat of feed Specific heat of the product Specific gravity of boiling product : 30 K : 291 K : 4.0 kJ/kgK : 3.26 kJ/kgK : 1.39
In order to concentrate 4536 kg/h of an NaOH solution containing 10 wt % NaOH to a 20 wt % solution, a single- 1) effect evaporator is being used with an area of 37.6 m. The feed enters at 21,1 °C (294.3 K). Saturated steam at 110 °C (383.2 K) is used for heating and the pressure in the vapor space of the evaporator is 51.7 kPa. Calculate the kg/h of steam used and the overall heat-transfer cocfficient
Transcribed Image Text:In order to concentrate 4536 kg/h of an NaOH solution containing 10 wt % NaOH to a 20 wt % solution, a single- 1) effect evaporator is being used with an area of 37.6 m. The feed enters at 21,1 °C (294.3 K). Saturated steam at 110 °C (383.2 K) is used for heating and the pressure in the vapor space of the evaporator is 51.7 kPa. Calculate the kg/h of steam used and the overall heat-transfer cocfficient
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