The work required for compressing a gas from an initial condition of 100 kPa and 300 K to a final pressure of 300 kPa is found to be 280 kJ/kg of the gas. The compressed gas is admitted to a nozzle where its velocity is increased to 700 m/s. If the gas enters the compressor with negligible velocity and leaves the nozzle at 100 kPa and 300 K, what is the heat removed during compression?

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

A:

Q: Neon gas is to be compressed from 105 kPa and 295 K to 460 kPa and 588 K. A heat loss of 17 kJ/kg…

A: Given Data⇒Neon GasP1=105 KPaT1=295 KP2=460 KPaT2=588 KHeat LossQ=17KJkgProblem definition⇒Problem…

Q: Steam is accelerated by a nozzle at a steady mass flow rate of 2 kg/s. If the steam at the nozzle…

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

Q: Air compressed in a diesel engine from an initial pressure of 1 atm (14.7psia) and a temperature of…

A:

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: Saturated vapor enters the turbine at 8.0 MPa and exits 0.008 MPa. The turbine has an isentropic…

A: To find: The electrical power produced. Given: The seam enters the turbine at P1=8 MPa. The exit…

Q: Saturated liquid refrigerant 134a at 900 kPa is throttled to a pressure of 200 kPa. What is the…

A:

Q: Sleäm at a pressure of Ра and lemperaure Is passed al a constant rate into a desuperheater unit. The…

A: Solution: State properties at state 1   (Before massing through desuperheater)…

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: Steam enters a turbine at 10,000 kPa and 500 °C, and exhausts at 100 °C with an enthalpy of 2000…

A:

Q: Steam at a temperature of 300C has a specific volume of 0.09765 m3 /kg. Determine the pressure,…

A: Since you have asked a multi-part question, we can provide you the solution to first three sub-parts…

Q: A hot stream and a cold stream of helium enter a mixing chamber. Their temperatures are 800°C and…

A: Given that, Temperature of hot stream, Th=800 °C,Temperature of cold stream, Tc=20 °C,Pressure of…

Q: In a hydroelectric power plant, water enters the turbine nozzles at 760 kPa absolute with a low…

A: In a hydraulic power plant, water enters with a low velocity so It is assumed that the velocity at…

Q: 5 ft3 /s oT air is conmpressed in an adiabatic compressor from an initial state of 14.7 psi and 60…

A:

Q: The entropy of steam entering the turbine at temperature 800°C and Pressure 1600 kPa is

A: Steam temperature, T=800oC Steam pressure, P=1600 kPa

Q: Determine the power input for a compressor that compresses helium from 110 kPa and 20°C to 400 kPa…

A: Given: The initial pressure of the helium is P1=110kPa. The initial temperature of the helium is…

Q: Helium is to be compressed from 120 kPa and 310 K to 700 kPa and 430 K. A heat loss of 20 kJ/kg…

A:

Q: An underground cavern will be used to store energy of compressed air. the cavern has a volume of…

A: Given:Volume of the cavern, V=150000 ft3Initial pressure of the air, Pi=15 psiaFinal pressure of the…

Q: Saturated vapor enters the turbine at 8.0 MPa and exits 0.008 MPa. The turbine has an isentropic…

A: Answer: The electrical power produced is 21507.3 kW.

Q: Air is compressed from an initial state of 100 kPa and 17°C to a final state of 600 kPa and 57°C.…

A: Given: The initial pressure of the air is P1=100 kPa. The final pressure of the air is P2=600 kPa.…

Q: The isentropic compressor has air exiting the compressor at 1.50 MPa and 780 K. In the air it is at…

A: Given that ,  P1=100 kPaP2=1.5 MPa=1500 KPaT2=780Km˙=0.078kg/l

Q: An adiabatic diffuser is employed to decrease the velocity of an airstream from 220 to 30 m/s. The…

A:

Q: Air is compressed in a piston-cylinder device in a reversible isothermal process at a temperature of…

A:

Q: A reversible adiabatic nozzle allows air to expand from 600kpa and 700K to 100kpa. If the air enters…

A:

Q: saturated vapor enters the turbine at 9.0 mpa and exits 0.009 mpa. The turbine has an isentropic…

A:

Q: Saturated vapor enters the turbine at 8.0 MPa and exits 0.008 MPa. The turbine has an isentropic…

A:

Q: Saturated vapor enters the turbine at 8.0 MPa and exits 0.008 MPa. The turbine has an isentropic…

A: This problem is related to the thermal powerplant based on the Rankine cycle. the turbine is a…

Q: water at 400 kPa

A: 9.998KJ/k

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: Refrigerant-134a at 800 kPa and 25°C is throttled to a temperature of 20°C. Determine the pressure…

A:

Q: Refrigerant-134a is throttled from the saturated liquid state at 22°C to a temperature of -10°C.…

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.