A fuel of formula CH10O, has an enthalpy of formation of-184 MJ/kmol (at 25 °C) and can be assumed to have a constant heat capacity of Co = 51 kJ/kmol-K. The fuel enters the combustor at 299 K and a flowrate of 180 kg/hr, where it is combusted with 110% stoichiometric preheated air at 450 K. Complete combustion occurs, with the products exiting the combustor at 900 K. a. What is the molar mass of the fuel? Mfuel = kg/kmol. b. What is the stoichiometric mass air-to-fuel ratio for this system? AFRtoic = c. The mass flow rate of products exiting the combustor is kg/s. d. The volumetric fraction of oxygen gas in the product stream is e. The mass fraction of carbon dioxide in the product stream is kJ/kg. f. What is the Higher Heating Value of the fuel? HHV = MW. g. What is the heat removed from the combustor? Qout =
A fuel of formula CH10O, has an enthalpy of formation of-184 MJ/kmol (at 25 °C) and can be assumed to have a constant heat capacity of Co = 51 kJ/kmol-K. The fuel enters the combustor at 299 K and a flowrate of 180 kg/hr, where it is combusted with 110% stoichiometric preheated air at 450 K. Complete combustion occurs, with the products exiting the combustor at 900 K. a. What is the molar mass of the fuel? Mfuel = kg/kmol. b. What is the stoichiometric mass air-to-fuel ratio for this system? AFRtoic = c. The mass flow rate of products exiting the combustor is kg/s. d. The volumetric fraction of oxygen gas in the product stream is e. The mass fraction of carbon dioxide in the product stream is kJ/kg. f. What is the Higher Heating Value of the fuel? HHV = MW. g. What is the heat removed from the combustor? Qout =
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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Transcribed Image Text:A fuel of formula CH10O, has an enthalpy of formation of -184 MJ/kmol (at 25 °C) and can be assumed to have a constant heat capacity
of Cp
preheated air at 450 K. Complete combustion occurs, with the products exiting the combustor at 900 K.
= 51 kJ/kmol·K. The fuel enters the combustor at 299 K and a flowrate of 180 kg/hr, where it is combusted with 110% stoichiometric
a. What is the molar mass of the fuel? Mfuel =
kg/kmol.
b. What is the stoichiometric mass air-to-fuel ratio for this system? AFRstoic =
c. The mass flow rate of products exiting the combustor is
kg/s.
d. The volumetric fraction of oxygen gas in the product stream is
e. The mass fraction of carbon dioxide in the product stream is
kJ/kg.
f. What is the Higher Heating Value of the fuel? HHV =
MW.
g. What is the heat removed from the combustor? Qout =
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