Consider the frictionless piston cylinder arrangement shown in which the piston is free to move. The...
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Consider the frictionless piston cylinder arrangement shown in which the piston is free to move. The cylinder is open at the top to the atmosphere and closed at the bottom and is divided into two compartments A and B by a fixed, rigid metal partition of mass 1 kg which ensures that the temperature is always the same in the two compartments. The sides of the cylinder and the piston are well insulated. The volume of compartment A is 0.3888 m³ and it initially contains air at 400 kPa, 87°C Compartment B initially has a volume of 0.2 m³ and contains 2 kg of air. Heat is now slowly added to compartment A until the pressures become equal in both the compartments. Determine the mass of the air in compartment A, (b) the initial pressure in compartment B, (c) the final pressure and temperature of the air in both the compartments (d) the work interaction for the air in compartments A and B and (e) the heat transferred to compartment A. B A For air, Pv=288T, where P is the pressure in N/m², v is the specific volume in m²/kg and T is the temperature in K, and C, = 720 J/kg.K. The specific heat capacity of the metal partition may be taken to be 0.386 kJ/kg-K. [16 marks] 514 Consider the frictionless piston cylinder arrangement shown in which the piston is free to move. The cylinder is open at the top to the atmosphere and closed at the bottom and is divided into two compartments A and B by a fixed, rigid metal partition of mass 1 kg which ensures that the temperature is always the same in the two compartments. The sides of the cylinder and the piston are well insulated. The volume of compartment A is 0.3888 m³ and it initially contains air at 400 kPa, 87°C Compartment B initially has a volume of 0.2 m³ and contains 2 kg of air. Heat is now slowly added to compartment A until the pressures become equal in both the compartments. Determine the mass of the air in compartment A, (b) the initial pressure in compartment B, (c) the final pressure and temperature of the air in both the compartments (d) the work interaction for the air in compartments A and B and (e) the heat transferred to compartment A. B A For air, Pv=288T, where P is the pressure in N/m², v is the specific volume in m²/kg and T is the temperature in K, and C, = 720 J/kg.K. The specific heat capacity of the metal partition may be taken to be 0.386 kJ/kg-K. [16 marks] 514
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Related Book For
Fundamentals of Thermodynamics
ISBN: 978-0471152323
6th edition
Authors: Richard E. Sonntag, Claus Borgnakke, Gordon J. Van Wylen
Posted Date:
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