Fundamentals Of Engineering Thermodynamics
9th Edition
ISBN: 9781119391388
Author: MORAN, Michael J., SHAPIRO, Howard N., Boettner, Daisie D., Bailey, Margaret B.
Publisher: Wiley,
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Chapter 3, Problem 3.61P
To determine
The final temperature at the equilibrium state.
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A rigid tank filled with R-134a is divided into two chambers by a membrane. The membrane is a perfect
insulator and there is no heat transfer between the chambers. The volume of the R-134a in chamber A
and chamber B is VA = 2 m³ and V8 = 15 m?, respectively. Initially (state 1), chamber A contains R-134a at
a temperature of 90 °C and a pressure of 550 kPa. Chamber A also contains a plate of nickel with a mass
of mNi = 30 kg that is always in thermal equilibrium with the refrigerant. Chamber B contains 55 kg of R-
134a at a temperature of -35 °C. The membrane ruptures and heat transfers between the tank and its
surroundings such that the R-134a inside the tank reaches a uniform state, with a final temperature, T2,
of -26.3°C. The specific heat of nickel is CaNi = 0.44 kJ/kgK
a) Determine the mass and the specific internal energy of the R-134a in chamber A at the initial
state. (ie. m, and ua)
b) Determine the pressure and specific internal energy of the R-134a in chamber B at the…
A rigid tank filled with water is divided into two chambers by a membrane. The membrane is a perfect
insulator and there is no heat transfer between the chambers. The volume of the water in chamber A and
chamber B is VA = 1 m² and Vg = 4 m³, respectively. Initially (state 1) chamber A contains water at a
temperature of 150 °C and a pressure of 350kPa. Chamber A also contains a plate of nickel with a mass of
myi = 20 kg that is always in thermal equilibrium with the water. Chamber B contains 40 kg of water at a
temperature of 80 °C. The membrane ruptures and heat transfers between the tank and its surroundings
such that the water inside the tank reaches a uniform state, with a final temperature, T2, of 100°C. The
specific heat of nickel is CpNi = 0.44 kJ/kg-K.
c) Determine the pressure and specific internal energy of the water at the final state. (ie. P, and uz)
d) Determine total heat transfer (between the tank and its surroundings) during the process. (ie. 1Q2)
A
В
(Water)
(Water)…
The initial state of 1.00 mol of a dilute gas is P1 = 3.00 atm, V1 = 1.00 L, and Eint 1 = 456 J and
its final state is P2 = 2.00 atm, V2 = 3.00 L, and Eint2 = 912 J. The gas is first cooled at constant
volume until it reaches its final pressure. It is then allowed to expand at constant pressure until it
reaches its final volume. (a) Illustrate this process on a PV diagram and calculate the work done by
the gas. (b) Find the heat absorbed by the gas during this process.
Chapter 3 Solutions
Fundamentals Of Engineering Thermodynamics
Ch. 3 - Prob. 3.1ECh. 3 - Prob. 3.2ECh. 3 - Prob. 3.3ECh. 3 - Prob. 3.4ECh. 3 - Prob. 3.6ECh. 3 - Prob. 3.7ECh. 3 - Prob. 3.8ECh. 3 - Prob. 3.9ECh. 3 - Prob. 3.10ECh. 3 - Prob. 3.11E
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