Fifty moles/second of enriched air (50-mol % Oxygen; 50-mol % Nitrogen) are produced by mixing air with a stream of pure oxygen. The mixing is accomplished isothermally and isobarically at 25°C and 1.2 bar. Estimate the flowrates of air and oxygen in moles/second. Estimate the rate of entropy generation in Watts/Kelvin. Estimate the heat transfer in kW.
Fifty moles/second of enriched air (50-mol % Oxygen; 50-mol % Nitrogen) are produced by mixing air with a stream of pure oxygen. The mixing is accomplished isothermally and isobarically at 25°C and 1.2 bar. Estimate the flowrates of air and oxygen in moles/second. Estimate the rate of entropy generation in Watts/Kelvin. Estimate the heat transfer in kW.
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:Fifty moles/second of enriched air (50-mol % Oxygen; 50-mol% Nitrogen) are
produced by mixing air with a stream of pure oxygen.
The mixing is accomplished isothermally and isobarically at 25°C and 1.2 bar.
Estimate the flowrates of air and oxygen in moles/second.
Estimate the rate of entropy generation in Watts/Kelvin.
Estimate the heat transfer in kW.
Expert Solution
Step 1
Given Data
Molar flow rate of product gas = 50 mol/sec
Composition of product gas = 50% oxygen and 50% nitrogen
Mole fraction of the product steam = xO2 = xN2 = 0.5
Mixing conditions- Isothermal and Adiabatic at 25 oC and 1.2 bar
To find
(a) Molar in-flow rate of air and oxygen
(b) rate of entropy generation (W/K)
(c) Heat Transfer (kW)
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