You are analyzing a piston-cylinder assembly that contains air at an initial pressure and temperature of 500 kPa and 600°C respectively. The air undergoes a polytropic process with the polytropic gas exponent n = 1.2 until the pressure reaches 100 kPa. Assuming the air behaves as an ideal gas (Rair = 0.287 kJ/kg-K). a) Determine the initial specific volume. b) Determine the final specific volume c) Determine the work per unit mass of air. d) Draw a p-v diagram to qualitatively show the process

Q: Air fills a 2-m-diameter balloon at 20°C and 5 kPa gage. Additional air is forced into the balloon…

A: Given: Diameter of balloon, D1=2 m Temperature, T=20°C Pressure, P =5 kPa

Q: A closed piston-cylinder contains 5-kg of water. Initially, the temperature of the water is 225°C…

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Q: A piston-cylinder device initially contains 1 m' of nitrogen gas at 0.14 MPa and 150 °C. The…

A: As per bartleby guidelines we are allowed to solve only 1st  3 subparts if multiple subparts are…

Q: Water at 150 kPa and 4 kg of saturated liquid vapor mixture is in a piston-cylinder assembly. 3 kg…

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Q: A frictionless piston-cylinder assembly initially contains B m3 of air at A kPa pressure. In this…

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Q: While the pressure remains constant at 700 kPa the volume of the system of hydrogen changes from 0.6…

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Q: A piston–cylinder device contains steam initially at 1 MPa, 450oC, and 2.5 m3. Steam is allowed to…

A: Given data: Volume, V1 = 2.5 m3 Temperature, T1 = 450°C Pressure, P1 = 1 MPa

Q: A sealed rigid tank whose volume 1.00 m contains 2 kg of liquid water plus water vapor. Initially…

A: Write the given data with suitable variables. V=1 m3m=2 kgT1=20 °Cu1=103.8 kJ/kgT2=95 °C

Q: A spring-loaded piston-cylinder device contains 2 kg of carbon dioxide. This system is heated from…

A: (2) Given, The mass of CO2 is 2kg. The initial pressure of the gas, P1=180kPa The initial…

Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.