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

Section: Chapter Questions

Problem 1.1MA

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Water at 320C and 20bar undergoes a process within a rigid tank to a final pressure of 30bar. Determine the following. a. If the final state is superheated, report the temperature. If the final state is two phase, report the quality. b. Determine the heat transfer for the process (kJ/kg)
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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.
1. An ideal gas undergoes a process for which the volume remains constant. At the start of the process, p = 15.625 psia, T¡ = 540 R, at the end p2 = 17.425 psia, T2 = 630 R. What is the work done (in Btu/ib) on the system? Your answer Submit
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
Q1 a- A piston cylinder maintaining gas at 137kpa , 16°C, and the volume is 0.2 m3. The gas is compressed to 600 kpa, 260 °C. Calculate the heat transfer during the process. Consider the process as a polytropic .R= 0.2081 [kJ/kg.K] ,CV= 0.3122kj/kg k.
Argon (molar mass 40 kg/kmol) compresses reversibly in an adiabatic system from 5 bar, 25 °C to a volume of 0.2 m If the initial volume occupied was 0.9 m calculate the final pressure in bar to 2 decimal places.. Assume nitrogen to be a perfect gas and take cv 0.3122kJ/kgK. Question 12 of 84 A Moving to another questlon will save this response.
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
3. One pound of an ideal gas undergoes an isentropic process from 95.3 psig and a volume of 0.9ft to a final volume of 3 ft°. If c, = 0.124 and c, = .063 Btu/lb.R what are (a) T2, (b) P2 (c)AH and (d) W. (Basis 1lbm)
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).
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:the initial quality (x1) is 2 kg of ammonia is contained in a rigid sealed tank at 10 °C. The surroundings temperature is 95 °C. The ammonia is now heated until all ammonia transferred to saturated vapor at 90 °C. Tank Ammonia, 2 kg Ti = 10°C T₂ = 90 c (Sat. Vap.) ₂ Tsum=95 C Below 0.2 O Between 0.2 and 0.4 O Between 0.4 and 0.6 O Between 0.6 and 0.8 O Above 0.8 O

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