1. Steam is compressed from 10 bar and 673 K to an exit temperature of 873 K. If the isentropic efficiency is 75%, calculate the power requirements to compress 25,000 kg/h. Estimate the exit gas pressure. [12] 2. A 3000kW compressor is used to compress steam to the exit temperature and pressure of and 10 bar, respectively. Calculate the initial temperature and pressure of the steam, flowrate is 15 000kg/h and the isentropic efficiency of the compressor is 80% [13]

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
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1. Steam is compressed from 10 bar and 673 K to an exit temperature of 873 K. If the isentropic
efficiency is 75%, calculate the power requirements to compress 25,000 kg/h. Estimate the exit
gas pressure.
[12]
2. A 3000kW compressor is used to compress steam to the exit temperature and pressure of
and 10 bar, respectively. Calculate the initial temperature and pressure of the steam,
flowrate is 15 000kg/h and the isentropic efficiency of the compressor is 80%
[13]
Transcribed Image Text:1. Steam is compressed from 10 bar and 673 K to an exit temperature of 873 K. If the isentropic efficiency is 75%, calculate the power requirements to compress 25,000 kg/h. Estimate the exit gas pressure. [12] 2. A 3000kW compressor is used to compress steam to the exit temperature and pressure of and 10 bar, respectively. Calculate the initial temperature and pressure of the steam, flowrate is 15 000kg/h and the isentropic efficiency of the compressor is 80% [13]
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