FUNDAMENTALS OF THERMODYNAMICS
10th Edition
ISBN: 9781119634928
Author: Borgnakke
Publisher: WILEY
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Q2) A piston/cylinder has ammonia at 1600 kPa, 100°C with a volume of 0.1 m3. The piston is loaded
with a linear spring and outside ambient is at 20 °C. The ammonia now cools down to 10 °C at which
point it has a quality of 10%. Find the work, the heat transfer and the total entropy generation in the
process.
NH₂
Refrigerant R134a in piston cylinder assembly,
200 kPa in initial state pressure and in the form
of saturated vapor. It is then reversed and The
final pressure is 1000 kPa by being compressed
in the adiabatic state change.
a) Find the final temperature (°C).
b) Find the work done (kj/kg).
Note: The changes in kinetic and potential
energies will be neglected.
I need the solution for this problem pls. Thanks a lot.
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- I need a copyable tyepd answer which I can copy itarrow_forwardAir as ideal gas in the closed system, find the change of entropy from the initial to the final state, in Btu/lb oR ( degree R ). T1 = 360 oF (degree F), P1 = 14.7 psia T2 = 540 oF (degree F), P2 = 58.8 psiaarrow_forwardof air at 300 K and 150 kPa. It's now heated in a two- Q: A piston cylinder contains 1.5 step processes: first by a constant volume process to 1000 K second a constant pressure process to 1500 K. find the heat transfer for this processes.arrow_forward
- Thermodynamics problem. A 5m3 rigid container containing water of 80% quality and a pressure of 2MPa. If the pressure is reduced to 400KP a by cooling the container, find the final mass of the vapor mg and the mass of the liquid mf .arrow_forwardi need the answer quicklyarrow_forwardA closed constant-volume system receives 10Kj of paddle work. The system contains a nitrogen at 340kpa, 5C and occupies 0.1m^3. Find the heat in KJ (Gain or Loss) if the final temperature is 127C. Please use: Q=AU+W (Observe direction) ideal gas equation to find mass table.arrow_forward
- helium in a steel tank is at 36 psia, 540 R with a volume of 4 ft^3 . it is used to fill a balloon. when the pressure drops to 18 psia, the flow of helium stops by itself. if all the helium is still at 540 R , how big a balloon is produced?arrow_forwardAir flows steadily through an engine at a constant temperature, 400K. Find the work per kilogram if the exit pressure is one-third the inlet pressure and the inlet pressure is 207 kPa. Assume that the kinetic and potential energy variation is negligible.arrow_forwardQ1: A cylinder/piston contains 0.1m³ of air at 110 kPa, 25°C. The air is compressed in a reversible polytropic process to a final state of 800 kPa, 200°C. Find the work done by the air, the heat transfer and the total entropy change for the process.Sketch the process on a P-V diagram.arrow_forward
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