A closed rigid tank contains 0.5 kg of Refrigerant 22, initially at a temperature T₁ = 25°C andpressure p₁ = 6.0 bar. The tank is cooled until the temperature is T2 = -10°C. Assume changes inkinetic and potential energy are negligible. Determine:a. finalpressureг.In bar and kJ unitb. heat transfer [ during the process (indicate magnitude and direction)

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Answered: A closed rigid tank contains 0.5 kg of…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

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3.134 One kilogram of air in a piston-cylinder assembly undergoes two processes in series from an initial state where Pi = 0.5 MPa, T = 227°C: Process 1-2: Constant-temperature expansion until the vol- ume is twice the initial volume. Process 2-3: Constant-volume heating until the pressure is again 0.5 MPa. Sketch the two processes in series on ap-v diagram. Assum- ing ideal gas behavior, determine (a) the pressure at state 2. in MPa, (b) the temperature at state 3, in °C, and for each of the processes (c) the work and heat transfer, each in kJ.
Refrigerant 134a undergoes a poly tropic process in a Piston- cylinder assembly from an initial state of saturale'a vapor at 2 bår to a final State of 12 bar and 80 °C. if the mass of the refrigerant is akg, Cal culate the work for the process 'in kJ using 's Signifigant Agures
Q2: A cylinder contains 0.113m³of air at 1 bar and 90°C .the air is compressed to a volume of 0.028 m2, the final pressure being 5.8bar Determine 1- Mass of the air in the cylinder 2- Value of index (n) for the compression process 3- Increase in internal energy 4- Heat received or rejected by air during compression
A piston-cylinder assembly contains 6kg of water that undergoes a series of processes to form a thermodynamic cycle. Process 1-->2: Constant volume cooling from p;=3.0bar to p2=1.5bar and x2=0.728 to Process 2-->3: Constant pressure expansion Process 3->1: Polytropic compression with pv?=constant to the initial state Kinetic and potential energy effects are negligible. To help organize given information and fix states 1 and 3, consider sketching a Pv diagram. Evaluate the net work for the cycle in k). Enter a numeric value (don't type the units).
Water contained in a closed, rigid tank, initially at 100 lb;/in?. 800°F, is cooled to a final state where the pressure is 20 Ib:/in?. Determine the quality at the final state and the change in specificentropy, in Btu/lb-°R, for the process. Step 1 Determine the quality at the final state. X2 = Hint Save for Later Attempts: 0 of 1 used Submit Answer Step 2 The parts of this question must be completed in order. This part will be available when you complete the part above.
2. A perfect gas has a value of R=0.298 KJ/kg-K and k=1.26. If 200 KJ of heat are added to 2 kg of this gas at constant volume, when initial temp. is 47 0C, find final temp. in 0C.
https://cloudflare-i. Library Genesis Get HofmewUIR Hel cs for enginee... Solutions to Engine... 3-76 A system consisting of 2 kg of ammonia undergoes a cycle composed of the following processes: Constant volume from P Process 1-2: 10 bar, , 0.6 to saturated vapor. Process 2-31 +228 kl. Constant temperature to Constanl pressure Process 3 1: Sketch the cycle on p-0and kinetic and potential eneryy cffects, determine the net work for the cycle and the heat transfer for each process. all in k 7 diagrams. Neglecting
Carbon Dioxide is contained in a piston-cylinder assembly and undergoes a cycle made of the fol- lowing processes: • Process 1-2: Constant volume from 1 bar, 300 K to 600 K • Process 2–3: Polytropic expansion with n=k until P3 = P1 • Process 3-1: Isobaric compression (a) Sketch the cycle on p-v and T-v coordinates (b) Determine the work and heat transfer in each process, in kJ/kg (c) Determine the type of cycle that this is. If it is a power cycle, compute the thermal efficiency. Otherwise, compute the coefficient of performance for a heat pump cycle.
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A Piston-Cylinder arrangement initially contains 3 kg of water as saturated liquid at 200 kPa pressure. Then, heat transfer to water, some of the water evaporates and the piston rises. When the volume is 60 liters, the piston touches the stoppers. Heating process continues until the pressure is twice the initial pressure. Plot the state change on the P-v diagram showing the saturation curves. Also, A) Finally, find the mass of the system in liquid phase. B) Find the final temperature. C) Calculate the total work done and heat transfer during the process.
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