As shown in Figure A2-a, a piston-cylinder assembly with two set of stops contains a mass of 3 kg of saturated liquid-vapor mixture at a pressure of 1.65 bar. At state 1, 1 kg of the water is in a liquid phase and the remaining water is in a vapor phase. The piston sitting on the stops starts to move when the pressure inside the cylinder reaches 5 bar due to heat transfer. The heat transfer stops when the total volume increases by 20%. H₂O m=3 kg Figure A2-a (i) Determine the initial and final temperatures. Determine the mass of liquid when the piston begins to move. Determine work done during this process and show the process on a P-v diagram. (iii)

As shown in Figure A2-a, a piston-cylinder assembly with two set of stops contains a mass of 3 kg of saturated liquid-vapor mixture at a pressure of 1.65 bar. At state 1, 1 kg of the water is in a liquid phase and the remaining water is in a vapor phase. The piston sitting on the stops starts to move when the pressure inside the cylinder reaches 5 bar due to heat transfer. The heat transfer stops when the total volume increases by 20%. H₂O m=3 kg Figure A2-a (i) Determine the initial and final temperatures. Determine the mass of liquid when the piston begins to move. Determine work done during this process and show the process on a P-v diagram. (iii)

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

A 2 m³ rigid tank contains water. Initially, 10 ?? of this water is in saturated liquid phase. The remainingvolume of the tank is filled with saturated vapor. The pressure inside the tank is 2 Bar. A-) What is the total mass of water inside the tank at that moment? B-) What is the quality of this mixture? C-) What is the average specific volume of this mixture? D-) The tank is now heated until the pressure inside is 8. Find the final temperature ofwater and the total heat input required for this process.
The cubic equation of state gives three roots for volume at the saturated state. At the critical point the roots are a. Imaginary and distinct b. real and repeated c. real and distinct
14. 6.3 kg/s of oxygen undergoes a steady flow process. At inlet state, the reduced pressure is 2 and reduced temperature is 1.3. At the exit state, the reduced pressure is 3 and the reduced temperature is 1.7. Using the generalized compressibility and correction charts, what is the rate of change of total enthalpy for this process? Use co -0.913 kJ/kg K. Express your answer in kW.
Suppose that 0.27 kg of water is contained in a vertical cylinder/piston arrangement as a 2 phase mixture at 50°C. Initially the volume beneath the 125 kg piston (area of 8.77 cm2) is 0.03 m^3. With the atmospheric pressure of 101.325 kPa (g = 9.81 m/s^2), the piston is resting on the stops. Energy is transferred to this arrangement until the piston rises from the stops. a) What is the temperature of the water when the piston first rises from the set of stops? b) What is the temperature at which the system reaches the saturated vapor state? c) Show the process on a T-v diagram and label the known states on the diagram.
1 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.
PROCESSES OF PURE SUBSTANCE: A 2-kg steam water mixture at 1.0 MPaa is contained in an inflexible tank. Heat is added until the pressure rises to 3.5 MPaa and the temperature to 400 0C. Determine: a) Heat transferred (kJ), b) ΔH (kJ), c)ΔS (kJ/k) (SHOW COMPLETE SOLUTION) (SHOW THE P-V AND T-S DIAGRAM PLEASE)
Two vessels A and B of different sizes are connected by a pipe with a valve. Vessel A contains 140 L of air at 3000kPa, 90oC. Vessel B, of unknown volume, contains air at 70 kPa, 5oC. The valve is opened and, when the propertieshave been determined, it is found that pm = 1400 kPa, tm = 45oC. (a) What is the mass in kg of air initially inside vessel A (b) What is the volume of vessel B in liters?
10. Oxygen at 200kPAg, 27°C is contained in a piston cylinder assembly arranged to maintain a constant pressure process. How much work in kJ/kg is produced by the system when it is heated to 300°C? Draw a figure or graph that will support the problem. Explain each step by step formula.
Problem 3.075 SI A piston–cylinder assembly contains 4.0 kg of air, initially at 2.0 bar, 30 oC. The air undergoes a process to a state where the pressure is 1.0 bar, during which the pressure–volume relationship is pV = constant. Assume ideal gas behavior for the air. Determine the work and heat transfer, in kJ.
A rigid, well-insulated tank contains air. A partition in the tank separates 12 ft^3 of air at 14.7 lbf/in2, 40◦F (left side of the tank) from 10 ft^3 of air at 50 lbf/in2, 200◦F(right side of the tank), as illustrated in the figure. The partition is removed and air from the two sides mix until a final equilibrium state is attained. The air can be modeled as an ideal gas, and kinetic and potential energy effects can be neglected. (Note: values for the left side of the tank are denoted with a subscript L, and values for the right side of the tank are denoted with a subscript R). a) Determine the final temperature (in F) b) Determine the final pressure (in lbf/in^2) c) Calculate the amount of entropy produced, in Btu/R d) Is this mixing process reversible or irreversible?
In the engine of a car that uses petrol as fuel, when the piston is at its highest position, air at 10 bar and 100°C enters the cylinder. Without any change in the volume, ignition occurs, and the air temperature rises to 1500°C. What is the air pressure after the ignition? (Select the closest value)[Whenever necessary, assume air as an ideal gas and consider R = 287 J/(kg.K).]
17 - A spherical balloon has a diameter of 8 m and contains Helium gas at 23 ºC and 230 kPa. What is the molar mass of helium in the balloon? a) 21.14 kmol B) 25.06 kmol NS) 41.50 kmol D) 26.57 kmol TO) 49.17 kmol