FUNDAMENTALS OF THERMODYNAMICS
10th Edition
ISBN: 9781119634928
Author: Borgnakke
Publisher: WILEY
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One kg steam expands isentropically from 2.1 MPa and 374 deg C to 93 deg C. Find the final quality of steam.
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 answer as soon as possiblearrow_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_forwardDuring an isentropic process of 3 lb/sec of air, the temperature increases from 50 deg F to 290 deg F. Find the work for a steady flow process.arrow_forward
- Number 3arrow_forward9. An air compressor takes in air at 105 Pa and 27°C having volume of 1.5 m3/kg and compresses it to 4.5×105 Pa. Find the work done, heat transfer and change in internal energy if the compression is isothermal.arrow_forwardAn amount of 4000 BTU of heat is transferred from a reservoir at 800 deg. F to a reservoir at 200 deg. F. Find the entropy change of the system.arrow_forward
- I need the solution for this problem pls. Thanks a lot.arrow_forwardA piston cylinder containes 0.1 kg air at 100 kpa, 126.85 C which goes through a polytropic compression process with n=1.3 to a pressure of 300 kpa. How much work has the air done in the process? I 8 13 !!arrow_forwardA 4 m3 cryogenic storage tank contains nitrogen at 110 K, with quality 25%. Saturatedvapor is now slowly withdrawn while some heat transfer takes place to a final state of110 K, x = 0.65. Find the mass withdrawn and the heat transfer.arrow_forward
- (b) Steam at 140 bar has an enthalpy of 3001.9 kJ/kg, find the temperature, specific volume and the internal energy.arrow_forward3kg of Co2 expanded in a stationary piston cylinder through a polytropic process from 30 degree Celsius and 250 kpa to 100kPa pressure. If the polytropic exponent, n = 1.45, find the total work, total heat transferred, total kinetic energy change and internal energy changearrow_forwardA certain ideal gas has a constant R = 38.9 ft-lff/lbm-R with k = 1.4. a) If 3 lbm of this gas undergoes a reversible nonflow constant volume process from 120 psia,740 oF to 140 oF find P2, ∆U, ∆H, Q, Work. b) If the process in “a” had been steady flow find work and ∆S.arrow_forward
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