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Temperature and pressure may be defined as
Using these definitions, prove that for a simple compressible substance
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Thermodynamics: An Engineering Approach
- Determine the properties of propane in gaseous state with the help of generalizedcompressibility charts according to the conditions given below. Compare the results obtainedwith the ideal gas equation of state.a) Specific volume at 7 MPa, 150 ℃b) Pressure at 150 ℃, 0.006 m3/kgc) Temperature at 0.006 m3/kg, 7 MPaarrow_forward1 kg of H 2 O is contained in a rigid, insulated cylindricalvessel. The H 2 O is initially saturated vapor at 120°C. The vessel is fitted with a paddle wheel from which a mass is suspended. As the mass descends a certain distance, the H 2 O is stirred until itattains a final equilibrium state at a pressure of 3 bar. The only significant changes in state areexperienced by the H 2 O and the suspended mass. Determine, in kJ,(a) the change in exergy of the H 2 O.(b) the change in exergy of the suspended mass.(c) the change in exergy of an isolated system of the vessel and pulley–mass assembly.(d) the destruction of exergy within the isolated system. Let T 0 = 293 K(20°C), p0 = 1 bar.arrow_forwardA gas having cv=0.7452kJ/kg.K undergoes a process in which delta h is equals to 400kJ/kg and delta u is equals to 320 kJ/kg. Determine a.) k; b.) cp (in kJ/kg-K) and c.) R (in kJ/kg-K) for this gas.arrow_forward
- A two-phase liquid–vapor mixture of H2O with an initial quality of 25% is contained in a piston–cylinder assembly as shown in figure. The mass of the piston is 40 kg, and its diameter is 10 cm. The atmospheric pressure of the surroundings is 1 bar. The initial and final positions of the piston are shown on the diagram. As the water is heated, the pressure inside the cylinder remains constant until the piston hits the stops. Heat transfer to the water continues until its pressure is 3 bar. Friction between the piston and the cylinder wall is negligible. Determine the total amount of heat transfer, in J. Let g 9.81 m/s2.arrow_forwardWhat are the values of Cp and Cv (in kJ/kg-K), given that for a certain ideal gas, R is 0.277 kJ/kg-K andk is 1.384?arrow_forwardQuestion : A cylinder with a piston contains 1 kg of saturated water vapor at the temperature T = 100°C. The vapor is condensed at constant pressure until all of it changes into liquid. Using the property tables provided with the exam, evaluate the heat Qout released by the system. Evaluate the heat in three ways, using the following relations: (a) ∆U = Q − W, (b) Q = ∆H at P = constant (c) Q = T∆S at T = constant.arrow_forward
- 2 properties are given to define the state of water using pure substance tables given below. Determine the properties or properties requested from you, asked for the following situations, using thermodynamic tables, and show each operation on your paper.a.) T = 200 0C x = 0.95 ν=? b.) P=0.275 mPa ν=0.05 m3/ kg = x? c.) x = 1.0 ν=0.8 m3/ kg = P? T=? d.) P=1700 kPa T = 3000C x=? h=? Phase State=? e.) T = 5000C h = 3487.7 kJ / kg P=? x=? ν=?arrow_forwardAn ideal gas is changed from p1 = 1bar, v1= 10m3 to p2 =10 bar , v2 = 1m3 , calculate Q & W for the follwing process: a- Isothermal process. b- adiabatic compression followed by cooling process at constant pressure. c- Heating at constant volume followed by cooling at constant pressure? Take Cp= (5/2)R & Cv=(3/2) Rarrow_forwardComplete the following table of thermodynamic properties for water:arrow_forward
- For H2O, determine the specified property at the indicated state. (d) T = 80°C, x = 0.2. Find p, in bar, and v, in m3/kg.arrow_forward1 kg of H 2 O is contained in a rigid, insulated cylindricalvessel. The H 2 O is initially saturated vapor at 120°C. The vessel is fitted with a paddle wheel from which a mass is suspended. As the mass descends a certain distance, the H 2 O is stirred until itattains a final equilibrium state at a pressure of 3 bar. The only significant changes in state areexperienced by the H 2 O and the suspended mass. Determine, in kJ, the destruction of exergy within the isolated system. Let T 0 = 293 K(20°C), p0 = 1 bar.arrow_forwardFor water with pressure of P=8MPa and secific volume v=0.023525 m3/kg, (4) determine the phase status____________ A. Compressed liquid B. Saturated liquid C. Saturated liquid-vapor mixture D. Saturated vapor E. Superheated vaporarrow_forward
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