Two pounds mass of water in a piston–cylinder assembly, initially a saturated liquid at 45 lbf/in2, undergoes a constant pressure, internally reversible expansion to x2 = 90%. For this reversible process, determine the work by integrating p dV and the heat transfer by integrating T dS, each in Btu.

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: done during the process is

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

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Q: Consider air within a closed container fitted with a paddle wheel that transfer energy to the system…

A: The given information in the problem is listed in the following attached image:

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

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

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

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Q: A piston-cylinder assembly contains 2 lb of water, initially at 100 lbf/in.² and 350°F. The water…

A:

Q: 4 kg of saturated water at 59.3 C undergoes a process during which the temperature increases to 120…

A: Option d is correct.

Q: One pound mass of water in a piston-cylinder assembly, initially a saturated liquid at 45 lb/in²,…

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Q: Water, initially saturated vapor at 4 bar, fills a closed, rigid container. The water is heated…

A: The heat transfer from the closed-rigid container is 407.09 kJ/kg.

Q: Two pounds mass of water in a piston-cylinder assembly, initially a saturated liquid at 35 lb/in²,…

A: m=2lbP1=P2=35lbf/in2state 1P1 =35lbf/in2 and saturated liquid T=259.30 F= 718.97 Rv1 = 0.01708…

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

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Q: A fluid at 0.5 bar occupying 0.08 m3 is compressed reversibly to a pressure of 9.8 bar and specific…

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Q: 2 kg of saturated water at 69.7 C undergoes a process during which the temperature increases to 120…

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Q: the heat added. A gas undergoes a thermodynamics cy

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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 R134a, initially at P₁ = 1 MPa, u₁ = 312.70 kJ/kg, is con well-sealed copper…

A: Given data as per questionMass of refrigerant, m=2 kgP1=1 MPa, u1=312.7 kJ/kgW˙=0.1 kWQ˙=k t2,…

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

A: Given data: p1=30 lbf/in2T1=40°Fm˙=225 lb/hp2=160 lbf/in2To=40°FW˙C=-2.25 hp=-5725 Btu/hr Need to…

Q: Three pounds mass of water in a piston-cylinder assembly, initially a saturated liquid at 15…

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Q: Q19: A stationary mass of gas is compressed without friction from an initial state of 2 m3 and 2 ×…

A: Given data: The initial volume of the gas is V1=2 m3 The initial pressure of the gas is P1=2×105 Nm2…

Q: nally reversible expansion to x2 = 90%.

A:

Q: A closed system has water initially as saturated steam at 1.5 bar. Heat is extracted at constant…

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A: Note:As per our guidelines we are supposed to answer only one question. Kindly repost other…

Q: to x2 = 90

A:

Q: 2.5 kg of saturated water at 80.9 C undergoes a process during which the temperature increases to…

A: Option a is correct.

Q: A piston–cylinder assembly contains 2 lb of water, initially at 100 lbf/in.2 and 500°F. The water…

A: Introduction We will compute the work done and heat transfer for the constant pressure and constant…

Q: 2 kg of saturated water at 69.7 C undergoes a process during which the temperature increases to 120…

A: Given, mass of water = 2 kg initial temperature T1 = 69.7 C final temperature T2 = 120 C pressure P…

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.