Problem 05.119 - Charging processA 2-m³ rigid insulated tank initially containing saturated water vapor at 1 MPa is connected through a valve to a supply line thatcarries steam at 400°C. Now the valve is opened, and steam is allowed to flow slowly into the tank until the pressure in the tank risesto 2 MPa. At this instant the tank temperature is measured to be 300°C. Determine the mass of the steam that has entered and thepressure of the steam in the supply line. The initial and final properties of steam in the tank arev0. 19436 m³/kg, u₁ = 2582.8 kJ/kg, v₂ = 0.12551 m³/kg, and u,software.v2-2773.2 kJ/kg. Solve using appropriateSteam400°CSat. vapor2 m1 MPaThe mass of the steam iskg.The pressure of the steam iskPa.

From steam table at Ts = 400 C, hs = 3118.4 KJ/kg, the supply line steam pressure is 8.916 MPa.…

Answered: Problem 05.119 - Charging process A…

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

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A 10 cu. m vessel initially contains 5 cu. m of liquid water and 5 cu. m of saturated water vapor at 100 kPa. calculate the internal energy of the system using the steam table.
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A steel casting weighing 2 kg has an initial temperature of 500oC; 40 kg of water initiallyat 25oC is contained in a perfectly insulated steel tank weighing 5 kg. The casting isimmersed in the water and the system is allowed to come to equilibrium. What is its finaltemperature? Ignore effects of expansion or contraction, and assume constant specific heatsof 4.18 kJ/kg.oC for water and 0.5 kJ/kg.oC for steel.
Ex: Argon in the amount of 1.5 kg fills a 0.04-m³ piston- cylinder device at 550 kPa. The piston is now moved by changing the weights until the volume is twice its original size. During this process, argon's temperature is maintained constant. Determine the final pressure in the device.
Question 1 A piston-cylinder assembly with a frictionless piston has a volume of 0.1 m' and initially filled with steam of 0.5 kg at a pressure of 0.4 MPa. There is heat transfer until the temperature reaches 573 K. Find the total heat transfer as well as the work done during the process. Sketch the process on a P-v diagram with respect to the vapour dome.
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Q3. As shown in figure Q3, two tanks connected with valve are containing air with the given condition as shown in the figure. Now the valve is opened and the air in the two tanks are allowed to mix and reach to equilibrium condition with the surrounding temperature of 20°C. Considering the necessary assumptions, determine (a) the volume of tank B, (b) the pressure of both tanks after the valve is opened. (c) Can we use ideal gas low for saturated water steam at atmospheric pressure? Discuss the reason. (The gas constant of air is R = 0.287 kPa.m³/kg.K.) A В V = 1 m3 m = X m3 T= 17 °C T= 35 °C P = 450 kPa P = 300 kPa Figure Q3.
A vessel of 0.25 m3 capacity is filled with saturated steam at 1500 kPa. If the vessel is cooled until 25% of the steam has condensed, how much heat is transferred, and what is the final pressure?
Two tanks containing air with the given volume, mass, temperature and pressure shown in Figure Q2 are connected with the valve. Now the valve is opened and the air in the two tanks are allowed to mix and reach to equilibrium condition with the surrounding temperature of 20°C. Considering the necessary assumption determine, (a) the volume of tank B, (b) determine the pressure of both tanks after the valve is opened. (c) Can we use ideal gas low for saturated water steam at atmospheric pressure? Discuss the reason.
3. A piston is resting on stops in a frictionless piston-cylinder device. The system contains water with a mass of 1 kg. The initial temperature is 30°C and the initial volume is 0.1 m³. The pressure required to raise the piston is 100 kPa. Find the work done if we add heat until the water is completely vapor (x=1). Find the heat added to the system. Draw and label the process on P-v and T-v diagrams. 4. A frictionless piston-cylinder device contains 10 kg of water initially at 100 kPa and 100°C. If the volume reaches 20 m³, the piston hits a set of stops and is restrained from further upward travel. Heat is added until the temperature is 200°C. Calculate the pressure at this point. Also, calculate the temperature when the piston first touches, but exerts no force, on the stops. Draw and label the process on P-v and T-v diagrams.
5- During some actual expansion and compression processes in piston cylinder device, the gases have been observed to satisfy the relationship Py" = const.. Calculate: (1) the work done when a gas expands from a state 150 kPa and 0.03 m' to a final volume of 0.2 m for (n=1.3), and (2) show the process on P-V diagram

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