Air (MW =28.8 g/mol) is compressed steadıly by a compressor from 100 kPa and 20°C to 1260 kPa and 300°C at a rate of 0.25 kg/s. The compressor is intentionally cooled by utilizing fins on the surface of the compressor and heat is lost from the compressor at a rate of 18 kW to the surroundings at 20°C. Using constant specific heats equals Cp (7/2)R, determine: (a) The power input to the compressor, (b) Isentropic efficiency of the compressor for the same outlet pressure as in part (a) (c) The entropy generation during this process.
Air (MW =28.8 g/mol) is compressed steadıly by a compressor from 100 kPa and 20°C to 1260 kPa and 300°C at a rate of 0.25 kg/s. The compressor is intentionally cooled by utilizing fins on the surface of the compressor and heat is lost from the compressor at a rate of 18 kW to the surroundings at 20°C. Using constant specific heats equals Cp (7/2)R, determine: (a) The power input to the compressor, (b) Isentropic efficiency of the compressor for the same outlet pressure as in part (a) (c) The entropy generation during this process.
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:Air (MW = 28.8 g/mol) is compressed steadily by a compressor from 100 kPa and 20°C to 1260 kPa and 300°C at a rate
of 0.25 kg/s. The compressor is intentionally cooled by utilizing fins on the surface of the compressor and heat is lost from the
compressor at a rate of 18 kW to the surroundings at 20°C. Using constant specific heats equals Cp (7/2)R, determine:
(a) The power input to the compressor,
(b) Isentropic efficiency of the compressor for the same outlet pressure as in part (a)
(c) The entropy generation during this process.
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