2. A frictionless piston-cylinder device initially contains 50 L of saturated liquid refrigerant-RI34a. The piston is free to move, and its mass is such that it maintains a pressure of 500 kPa on the refrigerant. The refrigerant is now heated until its temperature rises to 70°C. Calculate the work done during this process. R134a P=constant

2. A frictionless piston-cylinder device initially contains 50 L of saturated liquid refrigerant-RI34a. The piston is free to move, and its mass is such that it maintains a pressure of 500 kPa on the refrigerant. The refrigerant is now heated until its temperature rises to 70°C. Calculate the work done during this process. R134a P=constant

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 frictionless piston-cylinder device initially contains 80 L of liquid saturated with refrigerant 134a. The piston has free movement, and its mass is such that it maintains a pressure of 500 kPa on the refrigerant. The refrigerant is then heated until its temperature rises to 70 ° C. Calculate the work done during this process.
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A 110-volt 6 Ampere electric heatrer is submerged in 1 kg of water for 24 minutes. What will be the final temperature of the water if its initial temperature is 23 C. Assume a heat loss of 13%.
Initial condition: T = 360Ch = 1860.8 KJ/kg Process: IsometricFinal condition: saturatedRequired: Final pressure
A 100L tank initially contains water at 100kPa and a quality of 1%. Heat is transferred to the water, raising the temperature and pressure. At a pressure of 3 MPa, a safety valve opens and saturated vapor at 3 MPa flows out. The process continues, maintaining 3 MPa inside until the quality in the tank is 90% and then stops. Determine the total mass of water that flowed out and the total heat transfer.
A frictionless piston cylinder device initially contains 200L of saturated liquidrefrigerated R134a. The piston is free to move, and its mass is such that it maintainsa pressure of 900 kPa on the refrigerant. The refrigerant is now heated until itstemperature rises to 70 oC. Calculate the work done in the process.
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3) A tank, well insulated, has two parts divided by partition. The first part incuded 3,5 kg of water at 800 kPa while the other part is evacuated. This partition is removed and the water expands to fill the entire tank. If the final pressure and temperature are 100 kPa and 200°C, respectively, please determine a- The volume of the tank b- Temperature of the water for first part
2. In a free-moving piston-cylinder assembly with a pressure of 60 kPa and a temperature of -20°C100 grams of R-134a is initially retained. until the assembly temperature is 100°C.is heated. Calculate the volumetric change after heating.
Initially, 200 L of saturated vapor refrigerant-134a in a piston. The piston is free to move, and its mass is such that it maintains a pressure of 900 kPa on the refrigerant. The refrigerant is now heated until its temperature rises to 60°C. The work done during this process is Select one: 73.55 kJ 37.55 kJ 27.49 kJ O 72.49 kJ
Propane (MW = 44 ; k = 1.13) initially at 30 psia and 215°F, is stored inside a large spherical vessel having a diameter of 10 ft. If the temperature is increased to 635°F. Determine the following: a. Final pressure in psi b. Mass of propane in Ibm c. Constant Volume Specific heat in BTU/lbm d. Change in Internal Energy, AUU in BTU
B. 5 kilograms of saturated liquid water is maintained at a constant pressure of 800 kPa while heat is added until the temperature reaches 700°C. Determine the work done by the water.