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(2) Air is compressed in an insulated piston-cylinder device from 90 KPa and 20C to 0.4 MPa. If the process is isothermal, determine: (a) the entropy change of air, (b) the work done during this process.

(2) Air is compressed in an insulated piston-cylinder device from 90 KPa and 20C to 0.4 MPa. If the process is isothermal, determine: (a) the entropy change of air, (b) the work done during this process.

Elements Of Electromagnetics
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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MI.ll Asiacell O [Template] H.. -> H.W (1): (1) An insulated piston-cylinder device contains 5 L of saturated liquid water at a constant pressure of 150 KPa. An electrical resistance heater inside the piston is turned on now and electrical work done on steam is 2200 W. Find: (a) initial and final temperature of water (T1 and T2), (b) the work done during this process (W1-2 ), (c) the entropy change of water and show if the process is possible or not, and (d) plot P-V and T-s diagrams. (2) Air is compressed in an insulated piston-cylinder device from 90 KPa and 20C to 0.4 MPa. If the process is isothermal, determine: (a) the entropy change of air, (b) the work done during this process. Is Compressed Water: V1 - 5L PI - P2 - Air: P1= 90 KPa P2 = 0.4 MPa 150 KPa We = 2200 k.J Isothermal Process TI - T2 - const. (sat. liquid)(1) Iusulated Insulated Q (1) Q (2)
Transcribed Image Text:MI.ll Asiacell O [Template] H.. -> H.W (1): (1) An insulated piston-cylinder device contains 5 L of saturated liquid water at a constant pressure of 150 KPa. An electrical resistance heater inside the piston is turned on now and electrical work done on steam is 2200 W. Find: (a) initial and final temperature of water (T1 and T2), (b) the work done during this process (W1-2 ), (c) the entropy change of water and show if the process is possible or not, and (d) plot P-V and T-s diagrams. (2) Air is compressed in an insulated piston-cylinder device from 90 KPa and 20C to 0.4 MPa. If the process is isothermal, determine: (a) the entropy change of air, (b) the work done during this process. Is Compressed Water: V1 - 5L PI - P2 - Air: P1= 90 KPa P2 = 0.4 MPa 150 KPa We = 2200 k.J Isothermal Process TI - T2 - const. (sat. liquid)(1) Iusulated Insulated Q (1) Q (2)
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