PROBLEM #4: A piston cylinder device contains an ideal gas changed with an initial condition of 120 kPa and a volume of 11.5 m. Final conditions for the gas should be 1320 kPa and 0.85 m?. This can be done by performing any of the following processes, a. Isothermal compression b. Adiabatic compression then isobaric cooling c. Adiabatic compression then isochoric cooling For each of the reversible processes, calculate Q, W. AU and AH.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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Assume ethanol behaves like water.
Cooling
Cooling
water
water
(sat'd liquid)
T2 = 60°C
Pi = P2
(sat'd liquid)
Ti = 20°C
P2 15 000 Pa
Vapor
Pi = 15 000 Pa
Xv = 0.84
T2 = 40°C
PROBLEM #4:
A piston cylinder device contains an ideal gas changed with an initial condition of 120 kPa
and a volume of 11.5 m. Final conditions for the gas should be 1320 kPa and 0.85 m2. This
can be done by performing any of the following processes,
a. Isothermal compression
b. Adiabatic compression then isobaric cooling
c. Adiabatic compression then isochoric cooling
For each of the reversible processes, calculate Q, W. AU and AH.
Transcribed Image Text:Assume ethanol behaves like water. Cooling Cooling water water (sat'd liquid) T2 = 60°C Pi = P2 (sat'd liquid) Ti = 20°C P2 15 000 Pa Vapor Pi = 15 000 Pa Xv = 0.84 T2 = 40°C PROBLEM #4: A piston cylinder device contains an ideal gas changed with an initial condition of 120 kPa and a volume of 11.5 m. Final conditions for the gas should be 1320 kPa and 0.85 m2. This can be done by performing any of the following processes, a. Isothermal compression b. Adiabatic compression then isobaric cooling c. Adiabatic compression then isochoric cooling For each of the reversible processes, calculate Q, W. AU and AH.
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