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4.32 (a) Nitrogen gas (Cp = 30 kJ/kmol K) at 1 bar and 300 K is to be compressed to 10 bar and 450 K at a rate of 5000 kg/h. Cooling water (Cp=4.1868 kJ/kg K) enters the compressor at 300 K at the rate of 7500 kg/h and leaves at 320 K. Determine the power required by the compressor. (b) For the same conditions of nitrogen as in the previous part, determine the minimum power required by the compressor. The rate of circulation and the inlet temperature of cooling water remain the same as above.

4.32 (a) Nitrogen gas (Cp = 30 kJ/kmol K) at 1 bar and 300 K is to be compressed to 10 bar and 450 K at a rate of 5000 kg/h. Cooling water (Cp=4.1868 kJ/kg K) enters the compressor at 300 K at the rate of 7500 kg/h and leaves at 320 K. Determine the power required by the compressor. (b) For the same conditions of nitrogen as in the previous part, determine the minimum power required by the compressor. The rate of circulation and the inlet temperature of cooling water remain the same as above.

Introduction to Chemical Engineering Thermodynamics
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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Ans: (a) 397. 7 kw

        (b) 329.2kw

4.32 (a) Nitrogen gas (Cp = 30 kJ/kmol K) at 1 bar and 300 K is to be compressed to 10 bar and 450 K at a rate of 5000 kg/h. Cooling water (Cp=4.1868 kJ/kg K) enters the compressor at 300 K at the rate of 7500 kg/h and leaves at 320 K. Determine the power required by the compressor. (b) For the same conditions of nitrogen as in the previous part, determine the minimum power required by the compressor. The rate of circulation and the inlet temperature of cooling water remain the same as above.
Transcribed Image Text:4.32 (a) Nitrogen gas (Cp = 30 kJ/kmol K) at 1 bar and 300 K is to be compressed to 10 bar and 450 K at a rate of 5000 kg/h. Cooling water (Cp=4.1868 kJ/kg K) enters the compressor at 300 K at the rate of 7500 kg/h and leaves at 320 K. Determine the power required by the compressor. (b) For the same conditions of nitrogen as in the previous part, determine the minimum power required by the compressor. The rate of circulation and the inlet temperature of cooling water remain the same as above.
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