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A natural-gas fuel contains 85 mole% methane, 10 mole% ethane and 5 mole% nitrogen. a. What is the standard heat of combustion (kJ/mole) of the fuel at 25°C with H,O) as a product? b. The fuel is supplied to a furnace with 50% excess air, both entering at 25°C. The products leave at 600°C. If the combustion is complete and no side reaction occurs, how much heat (kJ/mole of fuel) is transferred in the furnace?

A natural-gas fuel contains 85 mole% methane, 10 mole% ethane and 5 mole% nitrogen. a. What is the standard heat of combustion (kJ/mole) of the fuel at 25°C with H,O) as a product? b. The fuel is supplied to a furnace with 50% excess air, both entering at 25°C. The products leave at 600°C. If the combustion is complete and no side reaction occurs, how much heat (kJ/mole of fuel) is transferred in the furnace?

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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5. A natural-gas fuel contains 85 mole% methane, 10 mole% ethane and 5 mole% nitrogen. a. What is the standard heat of combustion (kJ/mole) of the fuel at 25ºC with H,O«) as a product? b. The fuel is supplied to a furnace with 50% excess air, both entering at 25ºC. The products leave at 600°C. If the combustion is complete and no side reaction occurs, how much heat (kJ/mole of fuel) is transferred in the furnace?
Transcribed Image Text:5. A natural-gas fuel contains 85 mole% methane, 10 mole% ethane and 5 mole% nitrogen. a. What is the standard heat of combustion (kJ/mole) of the fuel at 25ºC with H,O«) as a product? b. The fuel is supplied to a furnace with 50% excess air, both entering at 25ºC. The products leave at 600°C. If the combustion is complete and no side reaction occurs, how much heat (kJ/mole of fuel) is transferred in the furnace?
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