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QI/A 0.1 mole% caustic soda (NaOH) solution is to be (concentrated in a continuous evaporator. The solution enters the unit at 25 °C at a rate of 150 mol/min and is concentrated to 5 mole% at 50 °C.1061mol/min of hot dry air at 200 °C and 1 atm is bushed through the evaporator and leaves form the top exit at 50 °C andl atm. The saturated water vapor leaves the evaporator at 50 °C and 1 atm. Calculate the rate at which heat must be transferred to or from the unit. Also, if the air flowrate is decreased to half how that would affect the transferred heat? Show that effect in percentage. 1061 CANaOn 4.184 J/g C Enthalpy of statured steam at 50 C-44.81 KJ/mol He Dry air dry air mol/min

QI/A 0.1 mole% caustic soda (NaOH) solution is to be (concentrated in a continuous evaporator. The solution enters the unit at 25 °C at a rate of 150 mol/min and is concentrated to 5 mole% at 50 °C.1061mol/min of hot dry air at 200 °C and 1 atm is bushed through the evaporator and leaves form the top exit at 50 °C andl atm. The saturated water vapor leaves the evaporator at 50 °C and 1 atm. Calculate the rate at which heat must be transferred to or from the unit. Also, if the air flowrate is decreased to half how that would affect the transferred heat? Show that effect in percentage. 1061 CANaOn 4.184 J/g C Enthalpy of statured steam at 50 C-44.81 KJ/mol He Dry air dry air mol/min

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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QI/A 0.1 mole% caustic soda (NaOH) solution is to be (concentrated/ in a continuous evaporator. The solution enters the unit at 25 °C at a rate of 150 mol/min and is concentrated to 5 mole% at 50 °C.1061mol/min of hot dry air at 200 °C and 1 atm is bushed through the evaporator and leaves form the top exit at 50 °C andl atm. The saturated water vapor leaves the evaporator at 50 °C and 1 atm. Calculate the rate at which heat must be transferred to or from the unit. Also, if the air flowrate is decreased to half how that would affect the transferred heat? Show that effect in percentage. CNaOn 4.184 J/g C Enthalpy of statured steam at 50 C"-44.81 KJ/mol Dry air dry air mol/min saturated H20 5o, t Molecular weight (NaOH)= 382 g/mol 15 Evaporator NaOH solution NaOH solution NaOH 50 NaOH H20 H20
Transcribed Image Text:QI/A 0.1 mole% caustic soda (NaOH) solution is to be (concentrated/ in a continuous evaporator. The solution enters the unit at 25 °C at a rate of 150 mol/min and is concentrated to 5 mole% at 50 °C.1061mol/min of hot dry air at 200 °C and 1 atm is bushed through the evaporator and leaves form the top exit at 50 °C andl atm. The saturated water vapor leaves the evaporator at 50 °C and 1 atm. Calculate the rate at which heat must be transferred to or from the unit. Also, if the air flowrate is decreased to half how that would affect the transferred heat? Show that effect in percentage. CNaOn 4.184 J/g C Enthalpy of statured steam at 50 C"-44.81 KJ/mol Dry air dry air mol/min saturated H20 5o, t Molecular weight (NaOH)= 382 g/mol 15 Evaporator NaOH solution NaOH solution NaOH 50 NaOH H20 H20
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