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Problem 4.029 Air expands through a turbine operating at steady state. At the inlet, P1 =...
Problem 6.066 Steam at 550 lbf/in.2, 700°F enters a turbine operating at steady state and exits...
Problem 6.066 Steam at 550 lbf/in.2, 700°F enters a turbine operating at steady state and exits at 1 lbf/in. 2 The turbine produces 600 hp. For the turbine, heat transfer is negligible as are kinetic and potential energy effects. (a) Determine the quality of the steam at the turbine exit, the mass flow rate, in lb/s, and the entropy production rate, in Btu/s OR, if the turbine operates without internal irreversibilities. (b) Determine the mass flow rate, in lb/s, and...
Steam enters a turbine operating at steady state at 700oF and 450 lbf/in2 and leaves as...
Steam enters a turbine operating at steady state at 700oF and 450 lbf/in2 and leaves as a saturated vapor at 0.8 lbf/in2. The turbine develops 12,000 hp, and heat transfer from the turbine to the surroundings occurs at a rate of 2 x 106 Btu/h. Neglect kinetic and potential energy changes from inlet to exit. Determine the exit temperature, in oF, and the volumetric flow rate of the steam at the inlet, in ft3/s.
Problem 4 A steam turbine is used to generate power. The turbine expansion process is "adiabatic,"...
Problem 4 A steam turbine is used to generate power. The turbine expansion process is "adiabatic," this means that there is no heat transfer during this process. The inlet and exit conditions are listed below T1 = 600-degF P2 10-psia T2 1932-degF x2 0.9 P1 500-psia BTU lb Adiabatio Steam Turbine h1:= 1299.1·ww s1 1.5652. BTU b-R Qloss 0 BTU lb At 10 psia, BTU h,-1143.3- BTU BTU lb s,-1.788-en lb-R hr:= 161.2- S(30-2836. A. Determine the work of the...
An air compressor is operating at a steady state with a mass flow rate of 1.3...
An air compressor is operating at a steady state with a mass flow rate of 1.3 kg/s. The inlet pressure and temperature are P1 171 kPa and T1 319 K, respectively. The exit pressure and temperature are P2 609 kPa and T2 428 K. respectively. Heat lost from the compressor to the surroundings per unit mass flow is 16 kJ/kg. Air can be assumed as an ideal gas. Kinetic and potential energy changes can be neglected. what is the required...
A piston-cylinder assembly contains 0.7 lb of propane. The propane expands from an initial state where...
A piston-cylinder assembly contains 0.7 lb of propane. The propane expands from an initial state where p1 = 60 lbf/in.and T1 = 90°F to a final state where P2 = 10 lbf/in. During the process, the pressure and specific volume are related by pr2 = constant. Determine the energy transfer by work, in Btu. W = Btu the tolerance is +/-2%
Air enters an insulated turbine operating at steady state at 8.0bar, 687 °C and exits at...
Air enters an insulated turbine operating at steady state at 8.0bar, 687 °C and exits at 1 bar, 327 °C. Neglecting kinetic and potential energy changes and assuming the ideal gas model, determine (a) the work developed, in kJ per kg of air flowing through the turbine. kJ/kg (b) whether the expansion is internally reversible, irreversible, or impossible. The expansion is impossible irreversible reversible the tolerance is +/-2%
At steady state, 1.8 lb/s of hot gaseous products of combustion cool from p1 = 18.0...
At steady state, 1.8 lb/s of hot gaseous products of combustion cool from p1 = 18.0 lbf/in2, T1 = 2400°F to p2 = 16.0 lbf/in2, T2 = 260°F as they flow through a pipe. Heat transfer from the gas occurs at a boundary temperature of Tb = 230°F. Use the ideal gas model with Cp = 0.25 Btu/lb.°R and an average molecular weight, M = 27.5 lb/lbmol. Let To = 60°F and ignore the effects of motion and gravity. Determine...
Problem 4.033 Air enters an uninsulated nozzle operating at steady state at 760°R with negligible velocity...
Problem 4.033 Air enters an uninsulated nozzle operating at steady state at 760°R with negligible velocity and exits the nozzle at 520°R with a velocity of 1010 ft/s. Assuming ideal gas behavior and neglecting potential energy effects, determine the heat transfer per unit mass of air flowing, in Btu/lb. Btu/lb the tolerance is +/-2%
An adiabatic turbine operates at steady state. Air enters the turbine at a pressure and temperature...
An adiabatic turbine operates at steady state. Air enters the turbine at a pressure and temperature of 800 kPa and 1100 K, respectively, and exits at 100 kPa. A temperature sensor at the turbine exit indicates that the exit air temperature is 700 K. Kinetic and potential energy effects are negligible, and the air can be treated as an ideal gas. Determine if the exit temperature reading can be correct. If yes, determine the turbine isentropic efficiency.
Water vapor at 5 MPa, 320 C enters a turbine operating at steady state and expands...
Water vapor at 5 MPa, 320 C enters a turbine operating at steady
state and expands to 0.1 bar. The mass flow rate is 6.52 kg/s, and
the isentropic turbine efficiency is 92%. Stray heat and kinetic
and potential energy effects are negligible. Determine the power
developed by the turbine in kW.
ht 6/3 of En Help I S Water vapor at 5 MPa, 320°C enters a turbine operating at steady state and expands to 0.1 bar. The mass flow...
Problem 6.066 Steam at 550 lbf/in.2, 700°F enters a turbine operating at steady state and exits at 1 lbf/in. 2 The turbine produces 600 hp. For the turbine, heat transfer is negligible as are kinetic and potential energy effects. (a) Determine the quality of the steam at the turbine exit, the mass flow rate, in lb/s, and the entropy production rate, in Btu/s OR, if the turbine operates without internal irreversibilities. (b) Determine the mass flow rate, in lb/s, and...
Problem 4 A steam turbine is used to generate power. The turbine expansion process is "adiabatic," this means that there is no heat transfer during this process. The inlet and exit conditions are listed below T1 = 600-degF P2 10-psia T2 1932-degF x2 0.9 P1 500-psia BTU lb Adiabatio Steam Turbine h1:= 1299.1·ww s1 1.5652. BTU b-R Qloss 0 BTU lb At 10 psia, BTU h,-1143.3- BTU BTU lb s,-1.788-en lb-R hr:= 161.2- S(30-2836. A. Determine the work of the...
An air compressor is operating at a steady state with a mass flow rate of 1.3 kg/s. The inlet pressure and temperature are P1 171 kPa and T1 319 K, respectively. The exit pressure and temperature are P2 609 kPa and T2 428 K. respectively. Heat lost from the compressor to the surroundings per unit mass flow is 16 kJ/kg. Air can be assumed as an ideal gas. Kinetic and potential energy changes can be neglected. what is the required...
A piston-cylinder assembly contains 0.7 lb of propane. The propane expands from an initial state where p1 = 60 lbf/in.and T1 = 90°F to a final state where P2 = 10 lbf/in. During the process, the pressure and specific volume are related by pr2 = constant. Determine the energy transfer by work, in Btu. W = Btu the tolerance is +/-2%
Air enters an insulated turbine operating at steady state at 8.0bar, 687 °C and exits at 1 bar, 327 °C. Neglecting kinetic and potential energy changes and assuming the ideal gas model, determine (a) the work developed, in kJ per kg of air flowing through the turbine. kJ/kg (b) whether the expansion is internally reversible, irreversible, or impossible. The expansion is impossible irreversible reversible the tolerance is +/-2%
Water vapor at 5 MPa, 320 C enters a turbine operating at steady
state and expands to 0.1 bar. The mass flow rate is 6.52 kg/s, and
the isentropic turbine efficiency is 92%. Stray heat and kinetic
and potential energy effects are negligible. Determine the power
developed by the turbine in kW.
ht 6/3 of En Help I S Water vapor at 5 MPa, 320°C enters a turbine operating at steady state and expands to 0.1 bar. The mass flow...
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