A frictionless piston–cylinder device contains 16 lbm of superheated water vapor at 40 psia and 600°F. Steam is now cooled at constant pressure until 70 percent of it, by mass, condenses. Determine the work done during this process.

Q: Water is heated at constant pressure from 5.0 MPa, 140 ºC to 500 ºC. Determine the rate of heat…

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

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Q: A 2009 L tank contains 20 kg of R-134a at 320 KPa. The tank valve is opened until the volume is…

A: A 2009 L tank contains 20 kg of R-134a at 320 KPa. The tank valve is opened until the volume is…

Q: 29.706 kg per second of water at 0.03398675 kbarg and internal energy of 15000 kW is heated at…

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Q: (a) the final temperature, (b) the work done during this process, (c) the total heat transfers

A: Given: V1=0.9 m3 P1=350 kPa P2=400 kPa To determine: the final temperature, (b) the work done during…

Q: Steam is cooled in a cylinder with a frictionless piston from     20kPa and 80 % dry until the…

A: Given      Initial Pressure, P1= 20 kPa      Dryness fraction, x = 0.8

Q: A piston cylinder contains 0.64 kg of air initially at 450 kPa and 225 °C, now the air expands in a…

A: Given Data  Mass of the air, m=0.64Kg T1=225°C T2=25°C P1=450 KPa P2=100 KPa.…

Q: A Piston-cylinder containing 300 lit of steam at 700 kPa and 250oC undergoes a constant pressure…

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Q: An insulated piston-cylinder device contains 200 L of air at 292 kPa and 25 °C. A paddle wheel…

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Q: A piston-cylinder device initially contains 0.85 m³ of air at 109 kPa and 93°C. The air is now…

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Q: 25.995 kg per second of water at 0.03398675 kbarg and internal energy of 15000 kW is heated at…

A: Given that: Mass flow rate of the water = 25.995 kg/s Pressure = 0.03398675 kbarg = 35 bar Internal…

Q: A cylinder-piston device contains 0.5 m3 of air at 150 kPa and 20 ° C. The gas is compressed in a…

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Q: Refrigerant-134a at 320 kPa and 40°C undergoes an isothermal process in a closed system until its…

A: To find :  The required magnitude of work  Given :  The pressure is  P1=320 kPa, The Temperature is…

Q: A piston cylinder device contains 0.850 kg of refrigerant-134a at -10.0°C. The piston that is e and…

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Q: A piston-cylinder receives an eight kg of steam with an inlet pressure of 0.5 MPa and an inlet…

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Q: An insulated piston-cylinder arrangement contains water. Sixty percent of the total 15 kg of water…

A: (a) To find: The amount of steam enters the cylinder. Given: The total mass is m1=15 kg. The mass of…

Q: A piston-cylinder device initially contains 0.65 m3 of saturated water vapor at 225 kPa. At this…

A: The P-V diagram of the process Given,

Q: A quantity of ideal gas occupies 0.5 m3 at 5oC and 165 kPa. It is compressed in accordance with the…

A: Given   Initial      Pressure, P1 = 165 kPa       Volume, V1 = 0.5 m3 Final      Pressure, P2 = 350…

Q: (1)Refrigerant R-134a that has an initial volume of 1220 L at 320 kPa with a quality of 91 percent…

A: Given:V1=1220 L    =1220*10-3 m3P1=320 KPax1=0.9P2=500 KPaT2=150°C

Q: A quantity of ideal gas occupies 0.5 m3 at 5oC and 165 kPa. It is compressed in accordance with the…

A: To find : The heat transfer during the process. Given data : The Initial volume is V1=0.5 m3. The…

Q: A piston-cylinder device initially contains 0.4 m³ of air at 100 kPa and 80°C .The air is now…

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Q: A closed system contains 1.7 kg of R-134a initially saturated vapor at 20°C. The ystem undergoes an…

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Q: A piston-cylinder device contains 0.2-kg of H20 as saturated vapor at 400 kPa. In a constant…

A: Given : Mass (m) = 0.2 kg Pressure saturated vapour= 400 kPa    To Find :-  Work done on the system=…

Q: 27.745 kg per second of water at 0.03398675 kbarg and internal energy of 15000 kW is heated at…

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Q: An adiabatic piston-cylinder device contains 6 lbm H₂O at 400°F and 140 psia. The piston moves to…

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Q: NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to…

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Q: A piston-cylinder device initially contains 0.802 m³ of air at 108 kPa and 94°C. The air is now…

A: Given data: V1=0.802 m3P1=108 kPaT1=94°CV2=0.247 m3 Need to determine the work done during the…

Q: (a) The initial temperature of the refrigerant (oC), (b) The final volume of the refrigerant ( in…

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Q: The volume of 1 kg of helium in a piston-cylinder device is initially 5 m³. Now helium is compressed…

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Q: A 7.57-m rigid tank contains 0.546 kg of H,O at 37.8°C. The H,0 is then heated to 204.4°C. Determine…

A: Volume of the tank, V=7.57 m3mass of H2O , m=0.546 kgTemperature of H2O , T1=37.8o Cfinal…

Q: Consider a sealed, rigid container of 10 kg of water vapor at 25°C and 80 kPa. A paddle wheel with a…

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Q: A piston-cylinder device initially contains steam at 3.5 MPa, and 250°C. Steam loses heat to the…

A: The initial pressure is The initial temperature is The final temperature is

Q: work done

A: Detailed answer given below.

Q: Steam with a specific volume of 0.09596 m³/kg undergoes a constant pressure process at 1.7 MPa until…

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Q: Two kilograms of an ideal gas at 700 kPa with an initial volume of 0.25 m3 expand adiabatically to a…

A: find the work done during adiabatic process.

Q: A piston-cylinder device initially contains steam at 200 kPa, 200°C, and 0.4 m³. At this state, a…

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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.