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Ethane (C2H6) is fed to a boiler where it is burnt with 70 % excess air. The ethane is supplied to the boiler at 25°C and the combustion air at 50°C. If 90 % of the energy from combustion goes into raising steam what would the stack temperature be. Cp (O2) = 30 J (mol C)1 Cp (N2) = 30 J (mol C)1 Cp (H20) = 35 J (mol C)1 Cp (CO2) = 39 J (mol C)1 %3D Heat of combustion of ethane at 25°C is -1428 kJ/mol, the heat of combustion refers to each mole of fuel burnt with the standard state of reactant and products as gas. Air consists of 21 % Oz and 79 % N2 on a volume basis.

Ethane (C2H6) is fed to a boiler where it is burnt with 70 % excess air. The ethane is supplied to the boiler at 25°C and the combustion air at 50°C. If 90 % of the energy from combustion goes into raising steam what would the stack temperature be. Cp (O2) = 30 J (mol C)1 Cp (N2) = 30 J (mol C)1 Cp (H20) = 35 J (mol C)1 Cp (CO2) = 39 J (mol C)1 %3D Heat of combustion of ethane at 25°C is -1428 kJ/mol, the heat of combustion refers to each mole of fuel burnt with the standard state of reactant and products as gas. Air consists of 21 % Oz and 79 % N2 on a volume basis.

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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Ethane (C2H6) is fed to a boiler where it is burnt with 70 % excess air. The ethane is supplied to the boiler at 25°C and the combustion air at 50°C. If 90 % of the energy from combustion goes into raising steam what would the stack temperature be. Cp (O2) = 30 J (mol C)1 Cp (N2) = 30 J (mol C)1 Cp (H20) = 35 J (mol C)1 C, (CO2) = 39 J (mol C)1 Heat of combustion of ethane at 25°C is -1428 kJ/mol, the heat of combustion refers to each mole of fuel burnt with the standard state of reactant and products as gas. Air consists of 21 % O2 and 79 % N2 on a volume basis.
Transcribed Image Text:Ethane (C2H6) is fed to a boiler where it is burnt with 70 % excess air. The ethane is supplied to the boiler at 25°C and the combustion air at 50°C. If 90 % of the energy from combustion goes into raising steam what would the stack temperature be. Cp (O2) = 30 J (mol C)1 Cp (N2) = 30 J (mol C)1 Cp (H20) = 35 J (mol C)1 C, (CO2) = 39 J (mol C)1 Heat of combustion of ethane at 25°C is -1428 kJ/mol, the heat of combustion refers to each mole of fuel burnt with the standard state of reactant and products as gas. Air consists of 21 % O2 and 79 % N2 on a volume basis.
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