FUNDAMENTALS OF THERMODYNAMICS
10th Edition
ISBN: 9781119634928
Author: Borgnakke
Publisher: WILEY
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Q2: One mole of air at P: and temperature Ti is compressed at constant volume till its pressure doubled. Then it is allowed to expand reversibly and isothermally to the original pressure and finally restored to the originol temperature by cooling at constant pressure. Sketch the processes on a P-V and calculate the net work done by the
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3kg 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 change
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- A quantity of ideal gas with an initial condition of 0.1 m3 and 735 kPa expands isothermally to 118 kPa. Find the heat transfer during the process.arrow_forwardTwo rigid tanks are filled with water. Tank A is 0.2 m³ at 100 kPa, 150°C and tank B is 0.3 m³ at saturated vapor 300 kPa. The tanks are connected by a pipe with a closed valve. We open the valve and let all the water come to a single uniform state while we transfer enough heat to have a final pressure of 300 kPa. Give the two property values that determine the final state and find the heat transfer. B Aarrow_forwardAir at 1000 C°, 1.0 MPa expands in a polytropic process with n = 1.3 to a pressure of 250 kPa. Find 1- the final temperature 2- the specific work outputarrow_forward
- one kg of steam expands isentropically from 2.5mpa and 300 degrees to 0.95mpa.find the final quality and Wn and Wsarrow_forward3 kg of steam initially at 2.5 MPa and a temperature of 370 degrees Celcius have 2460 kJ removed at a constant temperature until the quality is 90%. Find the pressure when dry saturated steam exist and the work.arrow_forwardA piston/cylinder has a water volume separated in VA = 0.3 m³ and VB = 0.4 m by a stiff membrane. The initial state in A is 1000 kPa, x = 0.8 and in B it is 1500 kPa and 250°C. Now the membrane ruptures and the water comes to a uniform state at 200°C. What is the final pressure? Find the work and the heat transfer in the process. Po mp cb A:H2O B:H20arrow_forward
- A piston cylinder containing air receives 3.892kw heat at constant temperature, and an initial pressure of 200kPa. The initial volume is 0.01 m3 .Find the final volume.arrow_forwardPlease include all steps and assumptionsarrow_forwardDraw Pv and Ts diagram of reversible isobaric process. Write the relationship between thermodynamic properties.arrow_forward
- Air at 20℃, 100 kPa is compressed in a piston/cylinder without any heat transfer to apressure of 200 kPa. How do the properties (T, v, u and s) change? (increase, aboutthe same or decrease).arrow_forwardFind the mass of water that can be cooled from 26°C to-10°C from a 20 tons refrigeration system for 14 hrs.arrow_forwardIf 6 liters of air at a pressure of 100 kPaa and 25 0 C are compressed reversiblyaccording to PV 2 = C, until the volume becomes 2 liters. Please answer the following a. The thermodynamic process the problem representsb. the pressure, temperature, and volume after the processc. change in internal energy, change in enthalpy and change in entropyd. work nonflow and heat transferredarrow_forward
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