Fundamentals Of Thermodynamics
10th Edition
ISBN: 9781119494966
Author: Borgnakke, C. (claus), Sonntag, Richard Edwin, Author.
Publisher: Wiley,
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A vessel contains 10 kg of water at 10 x 1 kPa (if last digit is 2 then 10 x 2 = 20 kPa).Determine specific and total internal energy, specific and total enthalpy, and specific and totalentropy. Cosider different cases/states:I. T = Tsat and x = 0II. T = Tsat and x = 0.5III. T = Tsat and x = 1IV. T = 300 ⁰CPlot these states on the Tv diagram and lable magnitudes. Refer property tables.
The relation Δu = cv ΔT is valid for any kind of process, constant-volume or not.
Air is compressed into a 90 ft3 rigid tank until the pressure is 30.5 psia and the temperature becomes 580 0R. What is the mass of the air in lbm and the change in pressure when the temperature decreases to 300 0R
Rair = 53.342 ft-lbf/ lbm-0R
(c) What is the final pressure of the gas? (The value of gas constant, R = 0.4615 kJ/kg-K, Cp = 1.8723 kJ/kg-K, Cv = 1.4108 kJ/kg-K)
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- Why is the product of P(pressure) and V(specific volume) not zero when P approaches 0?arrow_forwardHelium gas undergoes an adiabatic process in which the Kelvin temperature doubles. By what factor does the pressure change?arrow_forwardThe thermodynamic process of a substance when it passes through device changes in a constant pressure process. If the initial and final volumes of the substance are 0.4m3and 0.13m3respectively, what is the magnitude of work is required for this process? Is it done on or done by the system? Draw a schematic diagram,andthen plot the state/s and process, whichever is applicable in a t-sdiagramarrow_forward
- A flow of fluid where the density on different states remain the same? A. Compressible Flow B. Incompressible Flow C. Sonic Flow D. Supersonic Flowarrow_forwardWhile the pressure remains constant at 689.2 kPa, the volume of a system of air changes from 0.567 m3 to 0.238 m3. What will be the change in internal energy?arrow_forward26. A cooled tire has a voluime of 33.9L at -11.68°C and 178.94 kPag. If the pressure and temperature are increased to 209.57 kPag and 42.9°C respectively, determine the final volume in L.arrow_forward
- Helium gas initially has a volume of 50 liters, a pressure of 2 x 10⁵ N/m², and a temperature of 300 K. Then the gas undergoes a process at constant temperature until the volume increases to 100 liters. If In 2 = 0.693; specify: b. the work done by the gasarrow_forwardA fluid system undergoes a non-flow frictionless process following the pressurevolume relation as p = (5/V2) + 1.5 where p is in bar and V is in m3. During theprocess the volume changes from 0.25 m3to 0.05 m3and the system rejects 45 kJ ofheat. Determine1. Change in internal energy2. Change in Enthalpyarrow_forwardConsider air in a piston than undergoes a polytropic process where PV^n= constant and n is a positive value. How do the pressure and volume change during expansion?arrow_forward
- A close pressurized vessel having a volume of 342ft3 contains air at 214psig and 85 ̊F.Assuming that the temperature in the tank remains constant, how many 1.75ft3 evacuated drumscan be filled to 50 psig and 80 ̊ F?a. 490tanks b. 577tanks c. 715tanks d. 572tanksarrow_forwarda rigid tank contains 50kg of saturated liquid water at 90 degrees Celcius. if you add heat to the tank, could you determine the change of the state?arrow_forwardAt constant temperature, the volume of a gas is inversely proportional to its pressure. [Whenever necessary, assume air as an ideal gas and consider R = 287 J/(kg.K).] TRUE or False ?arrow_forward
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