A-C line Liquid R-134a A rigid container containing 6.6 kg of saturated liquid R-134a at 24°C is used to fill an air-conditioning system. A valve is opened and allows liquid R-134a to escape the tank into the A-C line until only 0.49 kg of R-134a remains in the tank, at which point the valve is closed. During the process, heat transfer is allowed to occur maintain the tank temperature at 24°C. What is the quality of the refrigerant inside the tank at the end of the process? What is the total heat transfer for this process? KJ

A-C line Liquid R-134a A rigid container containing 6.6 kg of saturated liquid R-134a at 24°C is used to fill an air-conditioning system. A valve is opened and allows liquid R-134a to escape the tank into the A-C line until only 0.49 kg of R-134a remains in the tank, at which point the valve is closed. During the process, heat transfer is allowed to occur maintain the tank temperature at 24°C. What is the quality of the refrigerant inside the tank at the end of the process? What is the total heat transfer for this process? KJ

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 rigid tank of 0.22-m volume initially contains saturated vapor refrigerant-134a at 1.2 MPa. The tank is connected by a valve to a supply line that carries refrigerant-134a at 1.6 MPa and 46 C. The valve is opened, and the refrigerant is allowed to enter the tank. The valve is closed when it is observed that the tank contains saturated liquid at 1.6 MPa. Determine (a) the mass of the refrigerant that has entered the tank and (b) the amount of heat transfer.
3) In a fixed volume container with a volume of 0.1 m^3, initially there is saturated water vapor at 130°C. The vessel is connected to a pipe through which steam flows through a valve at 2 MPa pressure and 350°C temperature. Then the valve opens and steam enters the container. Meanwhile, the temperature of the steam in the container remains constant at 130°C due to the heat transfer to the environment. When it is observed that 3/4 of the water in the container covers the liquid phase by mass, the valve is closed. Calculate a) the final pressure in the container, b) the mass of steam entering the container, c) the heat transfer to the environment.
In a well-insulated fixed-volume closed vessel, there is initially 5 kg of saturated liquid-vapor mixture water at 100 kPa pressure. In this state, one quarter of the total mass is in the vapor phase. Then the container The electric heater inside is working and a current of 8A is supplied from the heater plugged into a 110 V outlet. How long will it take to evaporate all the liquid in the container? Draw in the T-v diagram. ww w w www ww www www wwwwww wwm wm ww w ww wwww www w
(Section B) A thermodynamic system contains piston-cylinder arrangement with 0.02 m3 of air at 50°C and 400 kPa. During this process heat is added in an amount of 50 kJ and the work is done by a paddle wheel until the temperature reaches 700°C. If the pressure iss kept constant how much paddle-wheel work must be added to the air?
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Two different piston – cylinder devices each contain 1 kg of air. Initially, the temperature T = 300 K and %3D pressure P= 100 kPa of the gases are both the same in both cylinders. However, one of the cylinders is insulated and the other is not. Now, both of these gases inside the cylinders are let to expand in quasi- equilibrium processes until their pressures reach to 50 kPa. The expansion process takes place isentropically in the cylinder 1 and in the cylinder 2 the expansion process takes place reversible and isothermally. a) Plot in Excel the P-V diagrams of both processes. (Take k = cp / cv = 1.4) %3D b) Calculate the work done by the gases.
Refrigerant-134a (R-134a) enters the expansion valve of a refrigeration system at 650 kPa with a quality of 20%. The pressure of R-134a at the outlet is 200 kPa. a)Determine the temperature of R-134a at the outlet in oC. Calculate the difference of internal energy between the outlet and inlet in kJ/kg
A 0.78 m³ tank initially contains water at 260°C and a quality of 0.81. A valve at the top of the tank is opened and allows for saturated vapor at 260°C to leave the tank. The tank is maintained isothermally during this process until the tank is filled with only saturated vapor at 260⁰ C. What is the mass of steam that leaves the tank during this process? How much heated is added to the tank during this process. KJ kg
KINDLY INCLUDE INTERPOLATION STEPS WITH TABLE NUMBERS