FUNDAMENTALS OF THERMODYNAMICS
10th Edition
ISBN: 9781119634928
Author: Borgnakke
Publisher: WILEY
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9. Air is expanded from 400 kPa, 600 K in a polytropic process to 150 kPa, 400
K in a piston cylinder arrangement. Find the polytropic exponent n and the
work and heat transfer per kg air using constant heat capacity.
In an engine, the air in a piston-cylinder arrangement has a compression ratio of 0.1. It starts from 100kPa and
20degC. Find the temperature at state 2. You can assume an adiabatic process and the ideal gas law applies.
Four kilograms per second of Methane is compressed isentropically from 104.3 kPa, 140 degree Fahrenheit to 440.6 degree Fahrenheit. Assuming that the process is for ideal gas, find:
Final Pressure, torr
Change in entropy
Work, HP
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- I need the solution for this problem pls. Thanks a lot.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_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 Saturatedvapor is now slowly withdrawn while some heat transfer takes place to a final state of110 K, x = 0.65. Find the mass withdrawn and the heat transfer.arrow_forward
- Correct solution will be liked.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_forwardI need the answer as soon as possiblearrow_forward
- (b) Steam at 140 bar has an enthalpy of 3001.9 kJ/kg, find the temperature, specific volume and the internal energy.arrow_forwardAn automobile tire is inflated to 105 kPa at 30 deg. C. After being driven the temperature rises to 55 deg. C. Find the final pressure under isochoric process.arrow_forwardSolve it correctly please. I will rate accordinglyarrow_forward
- Steam at 120 bar has a specific volume of 0.01721 m3/kg, find the temperature, enthalpy and the internal energy.arrow_forward1 kg of steam expands isentropically from 2.5 MPa & 300 Degrees Celsius to .95 MPa. Find the final quality and Wn, Ws.arrow_forwardOne kg steam expands isentropically from 2.1 MPa and 374 deg C to 93 deg C. Find the final quality of steam.arrow_forward
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