Prior to entering a reactor, a stream of air flowing at a rate of 100 mol/s must be pre-heated isobarically at 1 atm from 25°C to 1200°C. This is accomplished using a countercurrent, perfectly insulated heat exchanger. The heat exchanger is supplied with steam at 10 bar and 510°C which exits the heat exchanger saturated at 5 bar.Calculate the mass flow rate of steam (kg/s) that must be supplied to the heat exchangerCalculate the volumetric flowrate of the inlet superheated steam (L/s)It turns out that the insulation around the heat exchanger is flawed, resulting in an approximate heat loss of 37%. Calculate the new mass flowrate (kg/s) needed to preheat the air

Given Air flow rate ma=100 mol/s preheated from T1=25°C T2=1200°C For steam P1=10 bar T1=510°C…

Answered: Prior to entering a reactor, a stream…

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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Prior to entering a reactor, a stream of air flowing at a rate of 100 mol/s must be pre-heated isobarically at 1 atm from 25°C to 1200°C. This is accomplished using a countercurrent, perfectly insulated heat exchanger. The heat exchanger is supplied with steam at 10 bar and 510°C which exits the heat exchanger saturated at 5 bar.
- Calculate the mass flow rate of steam (kg/s) that must be supplied to the heat exchanger
- Calculate the volumetric flowrate of the inlet superheated steam (L/s)
- It turns out that the insulation around the heat exchanger is flawed, resulting in an approximate heat loss of 37%. Calculate the new mass flowrate (kg/s) needed to preheat the air

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