A piston–cylinder device initially contains 2 L of air at 100 kPa and 25°C. The air is now compressed to a state of 620kPa and 160°C. The useful work input is 1,22 kJ. Assuming the surroundings are at 25°C and 100kPa, Determine, a) the exergy of the air at the initial and the final states b) the minimum work that must be supplied for the compression process c) the second-law efficiency of this process
A piston–cylinder device initially contains 2 L of air at 100 kPa and 25°C. The air is now compressed to a state of 620kPa and 160°C. The useful work input is 1,22 kJ. Assuming the surroundings are at 25°C and 100kPa, Determine, a) the exergy of the air at the initial and the final states b) the minimum work that must be supplied for the compression process c) the second-law efficiency of this process
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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A piston–cylinder device initially contains 2 L of air at 100 kPa and 25°C. The air is now compressed to a state of 620kPa and 160°C. The useful work input is 1,22 kJ. Assuming the surroundings are at 25°C and 100kPa,
Determine,
a) the exergy of the air at the initial and the final states
b) the minimum work that must be supplied for the compression process
c) the second-law efficiency of this process
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