4-14 A mass of 1.5 kg of air at 120 kPa and 24°C is contained in a gas-tight, frictionless piston-cylinder device. The air is now compressed to a final pressure of 600 kPa. During the process, heat is transferred from the air such that the temperature inside the cylinder remains constant. Calculate the work input during this process.

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Q: 4-43 Two tanks (Tank A and Tank B) are separated by a partition. Initially Tank A contains 2 kg of…

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Q: A frictionless piston-cylinder device initially contains 200 L of saturated liquid refrigerant-…

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Q: A pneumatic (air charged) lifting device is shown in the figure, which consists of a piston-cylinder…

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Q: EXAMPLE 4-3 Isothermal Compression of an Ideal Gas A piston-cylinder device initially contains 0.4…

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Q: 4-118 A piston-cylinder device contains helium gas initially at 100 kPa, 10°C, and 0.2 m³. The…

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Q: 4-62 1 kg of oxygen is heated from 20 to 120°C. Determine the amount of heat transfer required when…

A: For oxygenm= 1 kgT1=200 CT2=1200 CThe specific heats of oxygen at the average temperature of…

Q: 4-48 A 0.2-m3 rigid tank initially contains refrigerant-134aat 8°C. At in this state, 70 percent of…

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Q: 4-20 A piston-cylinder device contains 0.15 kg of air initially at 2 MPa and 350°C. The air is first…

A: Given:The mass of the air, The initial pressure, The initial temperature, The pressure after…

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Q: A piston-cylinder device initially contains air at 170 kPa and 30°C. At this state, the piston is…

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Q: Three kilograms of water at 30°C are placed in a piston cylinder device under 1.0 MPa absolute…

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Q: Air at 100 kPa and 280 K is compressed steadily to 600 kPa and 400 K. The mass flow rate of the air…

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Q: Consider the system shown in the figure. When the pins fall away, the gas expands against a constant…

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Q: 4-67 A 4-m x 5-m x 6-m room is to be heated by a baseboard resistance heater. It is desired that the…

A: Given data: T1=5°CT2=25°Ct=17 minP=100 kPa Need to determine the power required for the resistance…

Q: ia and 70 degrees F. More air is added to the tank until the pressure and temperature rise to 25…

A: Given: The initial mass of the air is m1=20 lbm. The initial pressure of the air is P1=20 psia. The…

Q: 4-40 Steam at 75 kPa and 8 percent quality is contained in a spring-loaded piston-cylinder device,…

A: Initial State,P1 = 75 kPa,   Volume = 2 m3,     Quality = 8%  or  X = 0.08,Final State,P1 = 225 kPa,…

Q: 5-120 Consider a 20-L evacuated rigid bottle that is surrounded by the atmosphere at 100 kPa and…

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Q: 4-65E A 10 ft³ tank contains oxygen initially at 14.7 psia and 80°F. A paddle wheel within the tank…

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Q: An insulated, vertical piston–cylinder device is purchased from a manufacturer. Upon purchase, it…

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Q: 5–23 A piston-cylinder device contains 50 kg of water at 250 kPa and 25°C. The cross-sectional area…

A: The Answer is below

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.