Problem 3 (10 pts)77.edA piston-cylinder device contains 5 kg of water initially at 1.5 MPa and 250°C. The piston undergoes an isobaric compressionprocess, reducing the volume to 0.55 m³.(a) Determine the final temperature of the water. (2 pts)(b) Calculate Amount of work done on the system in KJ. (3 pts)(c) Calculate the change in total internal energy of the water during the process in KJ. (3 pts)Jun 2, 4, 4:00:37 PM EDT(d) Show the process on a P-V diagram with respect to saturation lines. (2 pts)นท์pts)

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Answered: Problem 3 (10 pts) 77.ed 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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3.2 Carbon dioxide (Cp = 871 J/kg.K and Cv = 678 J/kg.K) is compressed from 0.4 m3 at 100 kPa and 14 oC to 0.08 m3 and 690 kPa according to the law PVn = Constant. Determine:(a) The value of the index n(b) The work done during compression(c) The change in internal energy(d) The heat transferred through the cylinder wall, stating whether this is a gain or loss
A rigid vessel of volume 0.02 m3 contains 0.054 kg of steam at an initial pressure of 4 bar. Heat is supplied to the steam from an external source. Calculate (i) the initial quality of the steam, (ii) the temperature and quality of the steam when the pressure becomes 4.5 bar, (iii) the pressure of the steam when it is just dry saturated, and (iv) the temperature when the pressure reaches 7 bar. Indicate the process on a P-V and T-V diagram for water. [Answers: (i) 0.8, (ii) 147.9°C, 0.894, (iii) 5.07 bar, (iv) 298.4°C]
6. Two kilograms of water is contained in a piston-cylinder loaded with a linear spring and the outside atmosphere. Initial the water is at 200 kPa, and V = 0.2 m³. Heat is now added until the volume grows to 0.8 m³, and the temperature increases to 600°C. Determine the following: (a) Initial phase of the system (calculate quality if appropriate). (b) Find the final pressure of the system. Show how you determine the final state and which table to look for the pressure. (c) Show the process on a P-v diagram and explain why the process is linear.
1.16 A 0.5-lbm of R134a at 100 psia pressure initially at 40°F is heated until 50% of mass is vaporized. Determine the temperature at which the refrigerant is vaporized, and sensible and latent heat transferred to the refrigerant.
2. A rigid vessel contains 5kg of wet steam (water) at 0.4 MPa. After the addition of 9585 kJ of heat the steam has a pressure of 2.0 MPa and a Temperature of 7000C Determine (a.) the initial quality, (b.) initial internal energy and (c.) initial specific volume of the steam.
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.
A sealed rigid vessel has volume of 1 m3 and contains 2 kg of water at 100°C. The vessel is now heated. If a safety pressure valve is installed, at what pressure, in bar, should the valve be set to have a maximum temperature of 200°C?
PLEASE SHOW COMPLETE SOLUTION THANK U 1. A rigid vessel contains 5kg of wet steam (water) at 0.4 MPa. After the addition of 9585 kJ of heat, the steam has a pressure of 2.0 MPa and a temperature of 7000C Determine (a) the initial quality, (b) internal energy, and (c) specific volume of the steam.
A piston/cylinder assembly with a spring contains 0.075 kg of water. The piston is initially resting on the stops and the water has a temperature of T1 = 80°C and a quality of x1 = 30%. Heat is added to the water causing the piston to lift off the stops, rise up and compress the spring. Heating contin- ues until a final state is reached and the pressure is 200 kPa. The vertical distance between the top of the piston when it is resting on the stops and the bottom of the spring is Ay = 0.6 m, as shown in the figure. Assume the piston is massless (m, = 0), the area of the piston is A, = 0.12 m², the spring constant is k, = 40 kN/m and atmospheric pressure is Po = 100 kPa. a) Determine the volume, pressure and temperature of the water when the piston just lifts off the stops, V2, P2 and T2. b) Determine the pressure and specific volume of the water when the piston just touches but is not yet compressing the spring, P3 and v3. c) Determine the final volume of water in the piston/cylinder…
How many kilograms of -5 °C ice per day will melt and evaporate to steam after adding a total of 7500 kJ/hr?
3 m' of air at 200 kPa and 80°C is heated to 300°C in an isobaric (constant pressure) process. What is the final volume of the air? 4.87 m³ 5.71 m3 12.5 m³ 18.8 m² A. В. С. D.
2. A sealed rigid vessel has volume of 1 m³ and contains 2 kg of water at 100°C. The vessel is now heated. If a safety pressure valve is installed, at what pressure should the valve be set to have a maximum temperature of 200°C?

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