Air in a closed piston-cylinder arrangement is expanded from the initial pressure of 9 bar and initial volume of 0.023 m to the final state of p = 3 bar. A polytropic relation of pV^1.27 = constant was followed between pressure and volume for the process. The specific internal energy at the initial and final states are 160 and 97 kJ/kg, respectively. The mass of the air is 0.3 kg. Neglecting the effect of kinetic and potential energy, determine the heat transfer, in kJ.

Q: of 2 kg in a closed system undergoes three processes in series: Process 1-2: isochoric process from…

A: Given data p1 = 1 bar, V1= 4 m^3 P2 = 2 bar V3 = 2 m3 V4 = 1 m3 Mass of gas (m) = 2 kg

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: 2. An ideal gas undergoes a process from state 1 ( T1= 300 K, P1= 100 kPa) to state 2 ( T2= 600 K,…

A: Given, T1 = 300 K P1 = 100 kPa T2 = 600 K P2 = 500 kPa Cp = 1 kJ/kg-K Cv = 0.7 kJ/kg-K   Gas…

Q: 1. Ethane, initially at 35 kPa with a volume of 0.12 m³, is compressed frictionlessly in a cylinder…

A:

Q: Oxygen undergoes an adiabatic process, the pressure volume relationship given as p = (5/V)+1.5 where…

A:

Q: Carbon monoxide undergoes an adiabatic process, the pressure volume relationship given as p =…

A:

Q: Steam enters a turbine operating at steady state at 750°F and 450 lbf/in² and leaves as a saturated…

A:

Q: Steam enters a turbine operating at steady state at 800°F and 450 Ibf/in? and leaves as a saturated…

A:

Q: The following processes occur in a reversible thermodynamic cycle: 1-2: 0.2 kg heating at constant…

A:

Q: Oxygen undergoes an adiabatic process, the pressure volume relationship given as p = (5/V)+1.5 where…

A:

Q: 2.Find the minimum work done per Kg of air in a cycle according to the following processes: a.…

A:

Q: Air is contained in a piston/cylinder device at an initial state where the volume is 1.7 m3,…

A:

Q: Steam enters a turbine operating at steady state at 800°F and 450 lbf/in2 and leaves as a saturated…

A:

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:

Q: A gas in a piston-cylinder assembly undergoes a compression process for which the relation between…

A: To find: The initial pressure in bar and work for the process kJ if n=0, n=1 and n=3. Given: The…

Q: m³/kg according to the law p volume then restores the fluid In a piston cylinder system, fluid at…

A:

Q: 2 kg of propane contained in a piston-cylinder assembly expand from an initial state where T1 = 50…

A:

Q: 0.08 bar. The turbine develops 9000 lings occurs at a rate of 590 kW. Negl xit. rmine the exit…

A:

Q: Air in a closed piston-cylinder arrangement is expanded from the initial pressure of 8.9 bar and…

A: Given: P1=8.9 bar=8.9×105PaV1=0.026 m3P2=3 bar=3×105 Pam=0.26 kgu1=100.5 kJ/kgu2=155.5 kJ/kg

Q: Equations of State for a gas; P.v = 0.004 (T + 273) U=U0+1,2 T given in the form. In equations P:…

A:

Q: A piston-cylinder device contains 2 kg of water which is initially a saturated liquid at 300 ∘ C. It…

A: The mass of liquid is.The initial temperature is Initially the water is saturated liquid.The…

Q: In a piston cylinder system, fluid at 0.8 bar occupying 0.09 m3 is compressed reversibly to a…

A:

Q: A piston-cylinder device containing air undergoes a series of two processes. The first process is…

A:

Q: Available energy of the air stream

A: Given; Pressure,p=5 barvelocity,v=50 m/stemperature,t=500 KSpecific heat, =1.005 kJ/KG-kconstant…

Q: Steam enters a turbine operating at steady state at 800°F and 450 lbf/in? and leaves as a saturated…

A:

Q: Oxygen undergoes an adiabatic process, the pressure volume relationship given as p = (5/)+1.5 where…

A: Note :-  You have posted multiple sub parts in single question. As per the guidelines I am able to…

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

A:

Q: Refrigerant 134a enters a well-insulated nozzle at 200 lbf/in.2, 140°F, with a velocity of 120 ft/s…

A:

Q: 2. A gas expands in a piston-cylinder assembly from an initial pressure of 800 kPa and a volume of…

A:

Q: Air is contained in a piston/cylinder device at an initial state where the volume is 1.7 m3,…

A: Givenvolume of air V=1.7m3temperature T=250Kpressure P=454kPa

Q: Steam enters a turbine operating at steady state at 750°F and 450 lbf/in² and leaves as a saturated…

A:

Q: Steam enters a turbine operating at steady state at 750°F and 450 lbf/in² and leaves as a saturated…

A:

Q: Consider a piston-cylinder assembly containing 10.0 kg of water. Initially, the gas has a pressure…

A:

Q: Steam enters a turbine operating at steady state at 700°F and 450 lbf/in² and leaves as a saturated…

A:

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: (1-2); constant pressure (2-3); and polytropic where n = 1.6, (3-1). Given that p1 = 100 kPa, T1 =…

A:

Q: A fluid at 0.6 bar occupying 0.1 m is compressed reversibly to a pressure of 11.1 bar and specific…

A:

Q: Solve par d,e,f

A: d) 0.0455 kg/se) Waste heat transferred 8.3674 kw    Compressor work input 2.9687 kW…

Q: 155.6 and 100.6 kJ/kg, respectively. The mass of the air is 0.22 kg. Neglecting the effect of…

A:

Q: An oil pump operating at steady state delivers oll at a rate of 11 lb/s through a 1-in-diameter exit…

A: Given data: m˙=11 lb/sd=1 in=0.0833 ftρ=100 lb/ft3P2-P1=40 lbf/in2 Need to determine the velocity of…

Q: One kg of an ideal gas (gas constant R = 287 J/kg.K) undergoes an irreversible process from state-1…

A:

Q: Refrigerant 134a enters a well-insulated nozzle at 200 lbf/in.2, 140°F, with a velocity of 120 ft/s…

A: Given data: P1=200 lbf/in2T1=140°FV1=120 ft/sP2=50 lbf/in2V2=1500 ft/s Need to determine the…

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.