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Steam is produced in a boiler using methane as a fuel. 1000 mol/h of methane at 25°C is burned in the boiler with 10% excess air at 100°C. The fractional conversion of methane is 0.9 and the ratio of CO₂ to CO in the combustion products is 10.0. The combustion product leaves the boiler at 400°C. Heat released by the combustion is accepted by steam. The greater the value of heat released, the more steam is produced in the boiler. a. Calculate the amount (mol/h) of air required. (10472 mol/h) b. Calculate the amount of heat transferred in the boiler (kW). (-162.4 kW) c. Does the steam production decrease or increase if you i. Increase the temperature of the inlet air ii. Increase the combustion product temperature.

Steam is produced in a boiler using methane as a fuel. 1000 mol/h of methane at 25°C is burned in the boiler with 10% excess air at 100°C. The fractional conversion of methane is 0.9 and the ratio of CO₂ to CO in the combustion products is 10.0. The combustion product leaves the boiler at 400°C. Heat released by the combustion is accepted by steam. The greater the value of heat released, the more steam is produced in the boiler. a. Calculate the amount (mol/h) of air required. (10472 mol/h) b. Calculate the amount of heat transferred in the boiler (kW). (-162.4 kW) c. Does the steam production decrease or increase if you i. Increase the temperature of the inlet air ii. Increase the combustion product temperature.

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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Steam is produced in a boiler using methane as a fuel. 1000 mol/h of methane at 25°C is burned in the boiler with 10% excess air at 100°C. The fractional conversion of methane is 0.9 and the ratio of CO₂ to CO in the combustion products is 10.0. The combustion product leaves the boiler at 400°C. Heat released by the combustion is accepted by steam. The greater the value of heat released, the more steam is produced in the boiler. a. Calculate the amount (mol/h) of air required. (10472 mol/h) b. Calculate the amount f heat transferred in the boiler (kW). (-162.4 kW) c. Does the steam production decrease or increase if you i. Increase the temperature of the inlet air ii. Increase the combustion product temperature.
Transcribed Image Text:Steam is produced in a boiler using methane as a fuel. 1000 mol/h of methane at 25°C is burned in the boiler with 10% excess air at 100°C. The fractional conversion of methane is 0.9 and the ratio of CO₂ to CO in the combustion products is 10.0. The combustion product leaves the boiler at 400°C. Heat released by the combustion is accepted by steam. The greater the value of heat released, the more steam is produced in the boiler. a. Calculate the amount (mol/h) of air required. (10472 mol/h) b. Calculate the amount f heat transferred in the boiler (kW). (-162.4 kW) c. Does the steam production decrease or increase if you i. Increase the temperature of the inlet air ii. Increase the combustion product temperature.
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