Practice Air is to be compressed in a single-stage reciprocating compressor from 1.013 bar and 15 °C to 7 bar. Calculate the indicated power required for a free air delivery of 0.3 m³/min, when the compression process is as follows: (1) (ii) (iii) isentropic; reversible isothermal; polytropic, with n = 1.25.

Practice Air is to be compressed in a single-stage reciprocating compressor from 1.013 bar and 15 °C to 7 bar. Calculate the indicated power required for a free air delivery of 0.3 m³/min, when the compression process is as follows: (1) (ii) (iii) isentropic; reversible isothermal; polytropic, with n = 1.25.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Question

Practice
Air is to be compressed in a single-stage reciprocating compressor
from 1.013 bar and 15 °C to 7 bar. Calculate the indicated power
required for a free air delivery of 0.3 m³/min, when the compression
process is as follows:
(i)
(ii)
(iii)
isentropic;
reversible isothermal;
polytropic, with n = 1.25.

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Step 1: Determining the given data

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Step 2: Finding indicated power when the process is reversible adiabatic

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Step 3: Finding indicated power when the process is reversible isothermal

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Step 4: Finding indicated power when the process is a polyropic compression

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