1. An adiabatic expansion of air occurs through a nozzle from 828 kPa and 71°C to 138 kPa. The initial kinetic energy is negligible. For an isentropic expansion, compute the specific volume, temperature and speed at the exit section.

Q: Practical examples 4. Air at a temperature of 75 °C and a pressure of 400 kPa occupies a volume of…

A: “Since you have posted a question with multiple sub parts, we will provide the solution only to the…

Q: Air at a 800 kPa and 1300 K enters an adiabatic and reversible turbine with a mass flow rate 6 kg/s.…

A: The problem states that air enters an adiabatic and reversible turbine. This means that there is no…

Q: 8.7 Diffuser A jet flies at an altitude of 10 km, where the pressure is 0.32 bar, and the…

A: To Find:The mass flows into the engine.The pressure increase across the diffuser.Given:The altitude…

Q: Steam flows steadily through an adiabatic turbine. The inlet conditions of the steam are 4 MPa,…

A:

Q: In a convergent divergent passage normal shock wave forms in the divergent section. The entropy…

A: 1) After the shock wave the randomness of the molecules increases. 2) So, the velocity will increase…

Q: Steam flows isentropically through a nozzle from 1500 kPa, 288 deg.C to 960 kPa. For 454 g/s,…

A: Given:  Steam flows through a nozzles isentropically for which Pressure at inlet, P1 =1500 kPa…

Q: 45g per second of air flows through a gas turbine which is expanding from 1500kPa to 100kPa in…

A:

Q: Q4: A diffuser, has air entering at 100 kPa, 280 K, with a velocity of 200 m/s. The inlet…

A: ◆ The exit pressure is 124.585 kPa. ◆ The exit temperature is 300 K.

Q: A nozzle receives an ideal gas flow with a velocity of 25 m/s, and the exit at 100 kPa, 300 K…

A: Stagnation temperature and exit and inlet remains the same.

Q: Air with initial state at 12500 ft is allowed to expand isentropically to a state where pressure is…

A:

Q: P₁ = 230 bar and initial temperature T₁ = 577 °C to ss flow rate am,h is 146 kg/s.

A: The power can be obtained by,where, themass flow rate.. is the inlet or initial enthalpy. is the…

Q: 200 kg/h of air is compressed adiabatically, assuming that ∆ ep = 0. The fluid enters the compressor…

A:

Q: Q2 Calculate the total entropy change when: (a) A block of heat capacity of 200 J/K at 100 °C is…

A:

Q: In a natural gas-pipeline compressor 110m3 /min propane is compressed polytropically. The inlet…

A:

Q: 12.5 Air initially at 50 psia and 660°R expands to atmospheric pressure. The process by which this…

A: Given Data: p1=50 psiaT=660oRpV1.3=Cp2=14.7 psia   To Find: (a) Final temperature. (b) Change in…

Q: Question attached

A: Apply first law of thermodynamics for closed system  dQ-dW=dU dQ=Tds     dW=-pdv    Cv=du/dt…

Q: Q4: A diffuser, has air entering at 100 kPa, 280 K, with a velocity of 200 m/s. The inlet…

A:

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.