FUNDAMENTALS OF THERMODYNAMICS
10th Edition
ISBN: 9781119634928
Author: Borgnakke
Publisher: WILEY
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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.
2.A piston cylinder arrangement contains steam at 10MPaa saturated liquid. Heat was
transferred isothermally so that the pressure reaches 2MPaa.
а.
Find the final temperature of the steam.
b. Find the change of entropy in kJ/kg if there is no entropy production.
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- I need the solution for this problem pls. Thanks a lot.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_forwardQ2) 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. NH₂arrow_forward
- A 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_forward16. A perfect gas has a valuen of R = 58.8 ft-lb/lb-R and k = 1.26. IF 20 %3D BTU are added to 5 lb of this gas at constant volume when the initial temperature is 90°F, find the final temperature, change in enthalpy, change in entropy, change in internal energy, and work non flow.arrow_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_forward
- 1. Two kilograms of air at a pressure of 2.25 MPa and temperature of 27C is heated atconstant volume to a final pressure of 2.5 MPa. Compute for the:a. Change in internal energyb. Change in enthalpyc. Change in entropyd. Heat transferrede. Non-flow work 2. In a constant pressure process, 325 KJ of heat are added to 6.55 kg of ideal gas(R=208 J/kg-K and k = 1.65) initially at 290 K. Calculate:a. Final Temperatureb. Change in enthalpyc. Change in internal energyd. Change in entropye. Non-flow workarrow_forwardI need the answer as soon as possiblearrow_forwardQl: A closed steel bottle contains ammonia at -20°C, x 20% and the volume is 0.05 m3.It has a safety valve that opens at a pressure of 1.4 MPa. By accident, the bottle is heated until the safety valve opens. Find the temperature and heat transfer when the valve first opens.arrow_forward
- Refrigerant 134a, to the evaporator of a refrigeration machine at 160 kPa pressure enters as a saturated liquid-vapor mixture, It receives 180 kJ of heat in an environment kept at -5 ° C then comes out as saturated steam at the same pressure. a) calculate the The entropy change of the refrigerant. b) calculate the entropy change of the cooled palace c) Calculate the total entropy change for this process.arrow_forwardPlease be very detailedarrow_forwardQ9: Steam at 110 bar has a specific volume of 0.0196 m3/kg, find the temperature, the enthalpy and the internal energy.arrow_forward
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What is entropy? - Jeff Phillips; Author: TED-Ed;https://www.youtube.com/watch?v=YM-uykVfq_E;License: Standard youtube license