Answered: A chemical plant requires process steam…

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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A chemical plant requires process steam at a rate of 0.3 kg/s at 500 kPa with not less than 90% quality and not more than 20 °C superheat. The available steam supply is at 2MPa and 400 °C. The following two schemes have been suggested for this purpose: Scheme I - Once the steam supply is throttled to 500 kPa, it is cooled at constant pressure in a heat exchanger to the required condition. Scheme II - Steam supply is expanded in an adiabatic turbine to 500 kPa. a. Calculate the minimum rate of heat removal in the heat exchanger for Scheme I. b. Calculate the maximum power output of the turbine for Scheme II.

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