A steam turbine operates with 2 MPa and 400°C steam at its inlet and saturated vapor at 40°C at its exit. The mass flow rate of the steam is 25 kg/s, and the turbine produces 12 MW of power. Determine the rate at which heat is lost through the casing of this turbine. (Answer: 4872.5 kW)

Q: An adiabatic air compressor is to be powered by a direct-coupled adiabatic steam turbine that is…

A: Given Data:

Q: Steam is compressed by an adiabatic compressor from 0.2 MPa and 150°C to 0.8 MPa and 350°C at a rate…

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Q: Steam is bled from this turbine at 1000 kPa and 200°C with a mass flow rate of 1 kg/s. The remaining…

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Q: Water enters the constant 120-mm inside-diameter tubes of a boiler at 7 MPa and 65°C and leaves the…

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Q: Steam enters an adiabatic turbine at 8 MPa, 550°C, and 57 (m/s and leaves at 60 kPa, 150°C, and 140…

A: Given: Inlet pressure (P1)=8MPa Inlet temperature (T1)=550°C Exit pressure (P2)=60kPa Exit…

Q: An open feedwater heater heats the feedwater by mixing it with hot steam. Consider an electric power…

A: Solution: Given Data: ms=0.1 lbm/sPs=10 psiaTs=200oFmf=2 lbm/sPf,i=10 psiaTf,i=100oFPf,e=10…

Q: etermine the power produced by an adiabatic turbine if steam enters at 2 MPaa and 400 °C and leaves…

A:

Q: Air flowing at 0.5 m3/min enters a compressor at 101 kPa and 25°C. The air exits at 600 kPa and…

A: Given data as per question Air flow rate = 0.5 m3/min =0.00833m3/s At entry pressure = 101 kPa At…

Q: Air enters a compressor of a jet engine at 0.65 atm and 275 K with a flow rate of 63.5 kg/s. The…

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Q: Steam enters the condenser of a steam power plant at 20 kPa and a quality of 90 percent with a mass…

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Q: Refrigerant-134a enters a compressor as a saturated vapor at 160 kPa at a rate of 0.03 m3 /s and…

A: Given: The initial pressure P1=160 kPa. The final pressure is P2=0.03 m3/s. The entropy increase is…

Q: Steam enters an adiabatic turbine at 5 MPa, 500 ºC, and 80 m/s and leavesat 50 kPa, 150 ºC, and 140…

A: The objective of the question is to determine the mass flow rate of the steam flowing through the…

Q: Steam enters a diffuser at 20 psia and 240°F with a velocity of 900 ft/s and exits as saturated…

A: Given: The inlet pressure of the steam is P1=20 psia. The inlet temperature of the steam is T1=…

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

A:

Q: Steam in an adiabatic turbine expands at a pressure of 6 MPa and a temperature of 450 ° C to a…

A: At outlet  6 MPa, 450 ° C  (Using superheated table) h1=3301.8 KJ/Kg 0.1 MPa (Using saturated table)…

Q: Air enters a gas turbine at 150 psia and 700°F and leaves at 15 psia and 100°F. Determine the inlet…

A: Given data: The inlet pressure of the air, P1 = 150 psi. The inlet temperature of the air, T1 =…

Q: An adiabatic open feedwater heater in an electric power plant mixes 0.2 kg/s of steam at 100 kPa and…

A: Outlet mass flow rate= 11.7Kg/s And the outlet velocity= 16.83m/s

Q: Air enters the compressor of a gas turbine plant at ambient conditions of 100 kPa and 25 ⁰C with a…

A:

Q: Saturated refrigerant-134a vapor at 15 psia is compressed reversibly in an adiabatic compressor to…

A: Given data P1=15 psiaP2=80 psia

Q: Air is compressed by an adiabatic compressor from 100 kPa and 20°C to 1.8 MPa and 400°C. Air enters…

A: Given data as per the question Initial pressure =100 kpa Initial temperature =200 c Final…

Q: Liquid water is to be compressed by a pump whose isentropic efficiency is 85 percent from 0.2 MPa to…

A: Given: The initial pressure of liquid water is P1=0.2 MPa. The final pressure of liquid water is…

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.