A piston–cylinder assembly fitted with a slowly rotating paddle wheel contains 0.17 kg of air, initially at 300 K. The air undergoes a constant-pressure process to a final temperature of 400 K. During the process, energy is gradually transferred to the air by heat transfer in the amount 12 kJ.Assuming the ideal gas model with k = 1.4 and negligible changes in kinetic and potential energy for the air, determine the work done by the paddle wheel on the air and by the air to displace the piston, each in kJ.

Q: Refrigerant 134-a contained in a piston-cylinder assembly rapidly expands from an initial state…

A: GivenT1=140°FP1=200lb/in2P1=200lb/in2from table  for T1=140°F and…

Q: Initially, a closed system consists of 2 lb of water vapor at the temperature and volume of 300°F…

A: Given data: mass of water m=2 lb  Initial Temperature of water Ti =300o F Initial volume of water vi…

Q: Water vapor contained in a piston–cylinder assembly undergoes an isothermal expansion at 299°C from…

A: Determine the gas constant.

Q: Determine the work and heat transfer, in Btu.

A:

Q: A piston-cylindrical device contains 1 kg of air at a temperature of 300 K and a pressure of 100…

A:

Q: A piston-cylinder assembly contains 0.5 lb of air initially at a pressure of 30 lb/in² and a…

A:

Q: A cylinder-piston apparatus contains nitrogen initially at 20 bar, 107ºC and 0.3 m ^ 3. The piston…

A: Given: Initial condition of the nitrogen are: 20 bar, 107ºC and 0.3 m ^ 3 Final pressure of the…

Q: Refrigerant 134a at p1 = 30 lb/in², T1 = 40°F enters a compressor operating at steady state with a…

A:

Q: Determine the initial and final temperatures, in °F, and the work for the process, in Btu.

A: Given: P=300 lbf/in2 V2=7.28 ft3 m=2 lbs To determine the initial and final temperatures, in °F,…

Q: Air within a piston-cylinder assembly, initially at 50 lbf/ in.2, 510°R, and a volume of 6 ft3, is…

A: Given data: P1=50 lbf/in2=7200 lb/ft2T1=510°RV1=6 ft3V2=3 ft3k=1.4 To fing: the mass, in lb, final…

Q: Air is contained in a piston-cylinder assembly, initially at 40 lbf/in2 and 600°R. The air expands…

A:

Q: A piston-cylinder assembly contains 0.4 lb of air initially at a pressure of 30 lb/in² and a…

A: Given that: m = mass of air inside the cylinder = 0.4 lb P1 = 30 lbf/in2 T1 = 200 oF k = specific…

Q: Two pounds mass of water in a piston-cylinder assembly, initially a saturated liquid at 45 lbf/in2,…

A: Given Data m=2 lbm State 1: 45 psi, saturated liquid State 2: 45 psi, x=90%

Q: Water, initially saturated vapor at 5 bar, fills a closed, rigid container. The water is heated…

A: The heat transfer. Given: The initial pressure of the vapor is P1=5 bar. The final temperature is…

Q: A piston–cylinder assembly contains ammonia, initially at a temperature of -20°C and a quality of…

A: Given data as per question T1=−200Cx1=0.4considering properties table at T=−200CPsat=1.9019…

Q: A piston-cylinder assembly contains ammonia, initially at a temperature of -20°C and a quality of…

A: Given data as per question T1=−200Cx1=0.80considering properties table at T=−200CPsat=1.9019…

Q: Two lbs of water vapor in a piston-cylinder assembly expands at a constant pressure of 250 lbf/in²…

A: Givenm=2lbsP=250lbf/in2  at saturated vapourV=7.08 ft3

Q: A system consisting of 3 lb of water vapor in a piston–cylinder assembly, initially at 350°F and a…

A:

Q: A gas contained within a simple piston-cylinder assembly with a fixed piston mass, initially at a…

A:

Q: Saturated liquid water contained in a closed, rigid tank is cooled to a final state where the…

A:

Q: A piston cylinder set up initially contains 5 kg of water at the saturated liquid state (state 1).…

A: The work transfer for each process: W12 = 964.2 kJ W23 = 0 kJ

Q: Refrigerant 134a at p₁ = 30 lb/in², T₁ = 40°F enters a compressor operating at steady state with a…

A:

Q: A piston-cylinder assembly contains 0.6 lb of air initially at a pressure of 30 lbf/in² and a…

A: According to the given data P1=P2=30lb/in2=30x144=4320 lb/ft2 m=0.6lb T1=300°F =300+460=760°R k=1.4…

Q: Two kg of Refrigerant 134a undergoes a polytropic process in a piston–cylinder assembly from an…

A: GIVEN :- m=2 kg P1=2 barP2=12 bar

Q: Water contained in a piston–cylinder assembly, initially at 300°F, a quality of 70%, and a volume of…

A: According to the first law of thermodynamics, the energy can neither be created nor destroyed but…

Q: Carbon monoxide (CO) contained in a piston–cylinder arrangement, initially at 3.5 bar and 462 K,…

A: Given data as per question

Q: Water contained in a piston-cylinder assembly, initially at 300°F, a quality of 50%, and a volume of…

A:

Q: Ammonia contained in a piston-cylinder assembly, initially saturated vapor at 0°F, undergoes an…

A:

Q: Air within a piston–cylinder assembly, initially at 50 lbf/ in.2, 510°R, and a volume of 6 ft3, is…

A: Given data: P1=50 lbf/in2=7200 lb/ft2T1=510°RV1=6 ft3V2=0.5 ft3k=1.4 Need to determine the mass, in…

Q: A closed, rigid tank is filled with 0.02 lb of water, initially at 120°F and a quality of 50%. The…

A: As the tank is rigid, the specific volume remains the same.

Q: Five kg of water is contained in a piston–cylinder assembly, initially at 5 bar and 300°C. The water…

A: Given data  Mass = 5 kg Water at 5 bar and 300°C heated at constant pressure . Heat transfer =…

Q: Water with a quality of 50% is contained in a piston/cylinder arrangement at state 1. It is heated…

A: The phase change is a constant pressure and constant temperature process simultaneously. The phase…

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.