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Efficiency of hydrogen production from carbonaceous sources are compared with overall efficiency which is defined as n=Lower heat value of the hydrogen/(Higher heat value of feed stock + higher heat value of fuel used for heat) Lower heat value of the hydrogen Higher heat value of feed stock + higher heat value of fuel used for heat Please compare and comment efficiencies of partial oxidation and steam reforming of methane (CH4) based on the information given below. Consider all heat requirement is supplied by combustion of methane and assume that system is working at steady state at operational temperature. Partial oxidation CH4 + ½ O2 →•CO + 2H2 AH°= -36 kJ/mol Steam reforming CH4 + H2O = CO + 3 H2 AH°= 205.8 kJ/mol CO + H20 → CO2 + H2 AH°= -41.2 kJ/mol Heating values Hydrogen HHV = -286 kJ/mol Hydrogen LHV =-242 kJ/mol Methane HHV = -891 kJ/mol

Efficiency of hydrogen production from carbonaceous sources are compared with overall efficiency which is defined as n=Lower heat value of the hydrogen/(Higher heat value of feed stock + higher heat value of fuel used for heat) Lower heat value of the hydrogen Higher heat value of feed stock + higher heat value of fuel used for heat Please compare and comment efficiencies of partial oxidation and steam reforming of methane (CH4) based on the information given below. Consider all heat requirement is supplied by combustion of methane and assume that system is working at steady state at operational temperature. Partial oxidation CH4 + ½ O2 →•CO + 2H2 AH°= -36 kJ/mol Steam reforming CH4 + H2O = CO + 3 H2 AH°= 205.8 kJ/mol CO + H20 → CO2 + H2 AH°= -41.2 kJ/mol Heating values Hydrogen HHV = -286 kJ/mol Hydrogen LHV =-242 kJ/mol Methane HHV = -891 kJ/mol

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
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Efficiency of hydrogen production from carbonaceous sources are compared with overall efficiency which is defined as n=Lower heat value of the hydrogen/(Higher heat value of feed stock + higher heat value of fuel used for heat) Lower heat value of the hydrogen Higher heat value of feed stock + higher heat value of fuel used for heat Please compare and comment efficiencies of partial oxidation and steam reforming of methane (CH4) based on the information given below. Consider all heat requirement is supplied by combustion of methane and assume that system is working at steady state at operational temperature. Partial oxidation CH4 + ½ 02 →•CO + 2H2 AH°= -36 kJ/mol Steam reforming CH4 + H20= C0 + 3 H2 AH°= 205.8 kJ/mol CO + H20 → CO2 + H2 AH°= -41.2 kJ/mol Heating values Hydrogen HHV =-286 kJ/mol Hydrogen LHV = -242 kJ/mol Methane HHV =-891 kJ/mol
Transcribed Image Text:Efficiency of hydrogen production from carbonaceous sources are compared with overall efficiency which is defined as n=Lower heat value of the hydrogen/(Higher heat value of feed stock + higher heat value of fuel used for heat) Lower heat value of the hydrogen Higher heat value of feed stock + higher heat value of fuel used for heat Please compare and comment efficiencies of partial oxidation and steam reforming of methane (CH4) based on the information given below. Consider all heat requirement is supplied by combustion of methane and assume that system is working at steady state at operational temperature. Partial oxidation CH4 + ½ 02 →•CO + 2H2 AH°= -36 kJ/mol Steam reforming CH4 + H20= C0 + 3 H2 AH°= 205.8 kJ/mol CO + H20 → CO2 + H2 AH°= -41.2 kJ/mol Heating values Hydrogen HHV =-286 kJ/mol Hydrogen LHV = -242 kJ/mol Methane HHV =-891 kJ/mol
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