6.22 Air initially occupying 1 m³ at 1.5 bars, 20°C undergoes an internally reversible compression during which pV" = constant to a final state where the pressure is 6 bars and the temperature is 120°C. Determine: (a) the value of n (b) the work and heat transfer. each in kJ; (c) the entropy change, in kJ/K.

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: One kilogram of ammonia initially at 8.0 bar and 50°C undergoes a process to 3.2 bar, 20°C while…

A:

Q: 3.32 WP Water, initially saturated vapor at 4 bar, fills a closed, rigid container. The water is…

A: Initial state: saturated vaporFinal state:Since container is rigid and closed, hence its volume…

Q: Air contained in a rigid, insulated tank fitted with a paddle wheel, initially at 4 bar, 40 °C, and…

A:

Q: (a) For the iron casting and oil as the system,determine the final equilibrium temperature, in °F.…

A: It is given that, mass of iron casting (miron) = 30 lb Initial temperature of iron casting (Ti,iron)…

Q: For state 1, how did you determine the value for hg = 2509.33 kJ/kg?

A: This question is based on the concept of rankine cycle. This question requires steam table.

Q: 4.40 WP Refrigerant 134a enters an air conditioner compressor at 4 bar, 20°C, and is compressed at…

A:

Q: A 60-lb aluminum bar, initially at T₂ = 190°F, is placed in a tank together with 190 lb of liquid…

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Q: Apply the first law to a constant-volume process.

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Q: Refrigerant 134a enters an insulated diffuser as a saturated vapor at 120°F with a velocity of 1200…

A: Given Data Refrigerant R-134a Inlet:120°F, saturated vapor, 1200 ft/s, 1.4 in2 Outlet:400 psi…

Q: What is the work of the compressor in KJ/kg?

A: Given:  P2 = 90 bar=9000 kPa T2 = 625 oC P3 = P4 = 16 bar= 1600 kPa

Q: 6.172 Steam at 12.0 MPa, 480°C expands through a turbine operating at steady state to 10 bar,…

A: Given:P1= 12 MPa= 12000 kPa, T1= 480°C P2 = 10 bar=1000kPa, saturated vapor (i.e, x=1)The mass flow…

Q: Need help breaking it down

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Q: 3. Ideal air (mass =lkg) in a piston-cylinder assembly undergoes two reversible processes in series…

A:

Q: A system consisting of 2 kg of water initially at 130°C, 10 bar undergoes an internally reversible,…

A: Given:The mass of water is .The initial temperature and pressure is  and The heat transfer to the…

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

A:

Q: Water is heated in a boiler tube at steady state from an inlet state of 500 kPa 25 deg-C (State-1)…

A: P1=500 kPa, T1=25 Cexit state: P2=500 kPa, T2=500 C

Q: Calculate the energy requirement to raise the temperature of 1 kg of water from 30 ° C of water to…

A: .

Q: Air within a piston-cylinder assembly, initially at 33 lbf/ in.², 510°R, and a volume of 6 ft³, is…

A: GivenP1=33 lbf/in2=33× 6895=227535PaT1=510oR=510°R × 5/9 = 283.333KV1=6 ft3=6×0.30483=0.1699…

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.