Air at 427 degrees celcius and 400 kPa with a volume flow of 1m3/s runs through an adiabatic turbine with an exhaust pressure of 120 kPa. Neglect kinetic energies and use average constant specific heats. Find the lowest and highest possible exit temperatures. For each case, also find the rate of work and rate of entropy generation.

Q: Steam enters an adiabatic turbine at 6 MPa and 300°C and exits at 20 kPa pressure and x=0.75…

A: Ideal gas equation:- Ideal Gas Equation is the equation defining the states of the hypothetical…

Q: Methane at 2760 kPa and -6.31 ℃ is compressed in steady-state adiabatic compressor (85% efficient)…

A:

Q: The adiabatic compressor shown in the figure operates steadily using Hydrogen with the following…

A: Write the given information.

Q: An adiabatic pump is to be used to compress saturated liquid water at 10 kPa to a pressure to 15 MPa…

A: Given data: *The inlet pressure of the saturated water is P1=10 kPa. *The exit pressure of the water…

Q: In a house, room temperatures are desired to be kept constant at 21 ° C. For this purpose, the…

A: Given data: Room temperature is kept constant at T∞=21 °C=294 K, where the heat is added from…

Q: If stream 5 is saturated liquid with H5 = 259.636 kJ/kg and P5 = 22 kPa, what is the enthalpy of…

A:

Q: A pressure relief valve is installed in a rigid 25-L steam cooker to release vapor and maintain…

A: To determine the smallest entropy change of the thermal energy reservoir.

Q: Air enters a compressor steadily at the ambient conditions of 100 kPa and 22°C and leaves at 800…

A: The inlet pressure of the air at the compressor is P1=100 kPa The exit pressure of the air at the…

Q: An air turbine has an isentropic efficiency equal to 0.85. If the turbine expands 2 kg/s from 2000…

A:

Q: Q3) 35% Steam enters an adiabatic turbine steadily at 7 MPa. 500°C. and 45 m/s, and leaves at 100…

A:

Q: The air in a piston-cylinder assembly is compressed with a pressure of 90 Kpa and a reversible…

A:

Q: Steam enters a turbine at a mass flow rate of 1.4 kg/s, a pressure of 700 kPa and a temperature of…

A: Given that , m=1.4 kg/s˙P1=700kPaT1=400°CP2=100kPav2=1.4 m3/kgQout=50kW

Q: An adiabatic capillary tube is used in some refrigeration systems to drop the pressure of the…

A:

Q: Using the relation ds = (δQ/T)int rev for the definition of entropy, calculate the change in the…

A: The type of refrigerant is R-134A. The initial pressure of the refrigerant is P = 200 kPa. From the…

Q: Q-3 / A vessel is divided equally in two parts. The first part is evacuated, while the second part…

A: Given data in second part of container  mass of compressed liquid (m)  = 2.5 kg  Initial Pressure…

Q: An adiabatic capillary tube is used in some refrigeration systems to drop the pressure of the…

A: Given data as per question Mass flow rate = 0.2 kg/s. Entry temperature of refrigerant =70 0 c Exit…

Q: Q-3/A vessel is divided equally in two parts. The first part is evacuated, while the second part of…

A: Given ; T= 333 K , P1 = 4 bar ,P2 = 40 KPa

Q: Refrigerant R-134a at 400 kPa and 10 kPa ,,,T1=0⁰C , T2 = 1⁰C enters an adiabatic diffuser steadily…

A: Given    Pressure, P1= 400 kPa  At 400 KPa, h₁ = 400.98 kJ/kg  The energy equation is:         For a…

Q: In Prob, assume that the heat is transferred from the cold reservoir to the hot reservoir contrary…

A: Given data

Q: Air is heated as it flows through a 6 in × 6 in square duct with negligible friction. At the inlet,…

A: Given data: Inlet air temperature, T1 = 700 R Inlet air pressure, P1 = 80 psia Inlet air velocity,…

Q: Q3: In a gas turbine installation, the gases enter the turbine at the rate of 5 kg/s with a velocity…

A:

Q: Refrigerant-134a is expanded adiabatically from 100 psia and 100°F to a pressure of 10 psia.…

A: Given: The pressure of R134a, P1 = 100 psi The temperature of the R134a, T = 100⁰F The final…

Q: Air at 17 oC is compressed steadily in an adiabatic compressor from 100 kPa to 680 kPa. If the…

A: Transfer of heat or mass between surrounding and system is called an adiabatic process. Given Data-…

Q: Saturated R-134a vapor enters a compressor at 68F. At compressor exit, the specific entropy is the…

A: Write the given information. Write the properties of R134a at 68°F.

Q: nd potential energies, determine: a) efficiency isentropic compressor.

A:

Q: An adiabatic expansion of air occurs through a nozzle from 828 kPa and 71°C to 138 kPa. For an…

A: GIVEN DATA INTIAL PRESSURE P=828KPa INTIAL TEMPRATURE T=71'C FINAL PRESSURE P=138KPa WE HAVE TO…

Q: 1 kg of air at 700 K and 1.1 MPa in a piston and cylinder devices undergoes a reversible and…

A:

Q: Helium gas is throttled steadily from 400 kPa and 60°C. Heat is lost from the helium in the amount…

A: Given data At state 1 P1=400Kpa T1=60°C Heat lost from helium Q = -1.75KJ/Kg  (-ve sign represents…

Q: K to another reservoir at 250 K. If entropy change of the hot reservoir is - 4 kJ/K, determine the…

A: given:entropy change of hot reservoir=-4kj/kT1=800KT2=250K

Q: Question attached

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

Q: Water vapor enters the turbine at a steady state of 3 MPa pressure, 400°C temperature and 160 m/s…

A: Given data as per the question The pressure of water vapor at the entrance =3 Mpa The temperature of…

Q: A 0.60 kg iron horseshoe is taken from a furnace at 930°C and dropped into 3.00 kg of water at…

A:

Q: Methane at 2760 kPa and -6.31 °C is compressed in steady-state adiabatic compressor (85% efficient)…

A:

Q: Steam enters an adiabatic turbine steadily at 3 MPa and 400°C and leaves at 50 kPa and 100°C. If the…

A:

Q: Compute for (a) Entropy, (b) Internal Energy, (c) Enthalpy of steam. a. Steam at 2.75 MPa and 475…

A: According to guidelines first three subparts will be done from multiple part questions. Post again…

Q: Air enters a compressor steadily at the ambient conditions of 100 kPa and 22°C and leaves at 800…

A: Given data: The temperature of ambient air, T = 22°C. Heat lost from the compressor, q = 120 kJ/kg.…

Q: Air enters a compressor at a mass flow rate of 0.04 kg/s with a stagnation pressure of 100 kPa and a…

A:

Q: 4. A converging nozzle is fed with air from a large reservoir where the. pressure and temperature…

A:

Q: Water vapor enters a compressor at 35 kPa and 160°C and leaves at 300 kPa with the same specific…

A: Given Data⇒temprature and pressure at entry pointsP1=35 kpaT1=160C°Pressure at exit pointP2=300…

Q: Air enters a nozzle with a speed of 50 m/s at 77 °C and 280 kPa. The air flows through the turbine…

A:

Q: Consider a system consisting of a hot body at 70°C and a cold body at 20°C. If 100 kJ of heat is…

A:

Q: An aircraft is flying at a cruising speed of 250 m/s at an altitude of 5000 m where the atmospheric…

A: GIVEN:cruising speed=250m/saltitude=50000matmospheric pressure=54.05kpaambiant air…

Q: 7.31.) Saturated steam at 125 kPa is compressed adiabatically in a centrifugal compressor to 700 kPa…

A:

Q: in turbine out (out) Air flows through an adiabatic turbine at 25 kg/sec. If it flows in at 400°C…

A:

Q: Air is compressed steadily by a reversible compressor from an inlet state of 100 kPa and 300 K to an…

A: Obtain the pressure ratio.

Entropy

In physics, entropy means the amount of disorder or the degree of randomness associated with a thermodynamic system. The system is not self-organized when the entropy of the system is high. For instance, when a system is at an elevated temperature, its molecules are in random motion, vibrating and colliding with each other. During this scenario, the probability of finding a molecule at a particular place twice, is low. Under this circumstance, the system can be said to be in a high entropy.