FUND OF ENG THERMODYN(LLF)+WILEYPLUS
9th Edition
ISBN: 9781119391777
Author: MORAN
Publisher: WILEY
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T-3
Steam enters a turbine operating at steady state at 800°F 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 °F, and the volumetric flow rate of the steam at the inlet, in ft3³/s.
Steam enters a turbine operating at steady state at 750°F 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 °F, and the volumetric flow rate of the steam at the inlet, in ft³/s.
Step 1
Determine the exit temperature, in °F.
T₂ = i
°F.
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- Steam enters a turbine operating at steady state at 750°F 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 °F, and the volumetric flow rate of the steam at the inlet, in ft3/s. Step 1 Your answer is correct. Determine the exit temperature, in °F. T2 = 94.3 Hint Step 2 °F. Determine the volumetric flow rate of the steam at the inlet, in ft³/s. (AV) 1 = i ft³/s Attempts: 1 of 4 usedarrow_forwardHot combustion gases, modeled as air behaving as an ideal gas, enter a turbine at 145 lbf/in.2, 2700°R with a mass flow rate of 0.32 lb/s and exit at 29 lbf/in.2 and 1620°R. If heat transfer from the turbine to its surroundings occurs at a rate of 20.36 Btu/s, determine the power output of the turbine, in hp. W cv = i hparrow_forwardI need some help in how to solve this problem. Any help will be appreciated. Thanksarrow_forward
- Refrigerant 134a enters an insulated diffuser as a saturated vapor at 120°F with a velocity of 1400 ft/s. The inlet area is 1.4 in?. At the exit, the pressure is 400 Ibf/in2 and the velocity is negligible. The diffuser operates at steady state and potential energy effects can be neglected. Determine the mass flow rate, in Ib/s, and the exit temperature, in °F.arrow_forward* Your answer is incorrect. A pump is used to circulate hot water in a home heating system. Water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. The inlet pressure and temperature are 14.7 lbf/in.², and 180°F, respectively; at the exit the pressure is 90 lbf/in.² The pump requires 1/15 hp of power input. Water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 Btu/lb. °R. Neglecting kinetic and potential energy effects, determine the temperature change, in °R, as the water flows through the pump. ΔΤ : = i 0.36 °Rarrow_forwardRefrigerant 134a enters a well-insulated nozzle at 200 lbf/in.2, 200°F, with a velocity of 120 ft/s and exits at 50 lbf/in.2 with a velocity of 1500 ft/s. For steady-state operation, and neglecting potential energy effects, determine the temperature, in °F, and the quality of the refrigerant at the exit.arrow_forward
- 5. Air enters a compressor at a rate of 0.5 Kgs¹ with a velocity of 6.4 ms', specific volume 0.85 m³Kg¹ and a pressure of 1 bar. It leaves the compressor at a pressure of 6.9 bar with a specific volume of 0.16 m³Kg¹ and a velocity of 4.7 ms¹. The internal energy of the air at exit is greater than that at entry by 85 KJKg'. The compressor is fitted with a cooling system which removes heat at a rate of 60 KJs¹. Calculate the power required to drive the compressor and the cross- sectional areas of the inlet and outlet pipes.arrow_forwardAir enters the compressor of a simple gas turbine at 14.5 lbf/in.2, 80°F, and exits at 87 lbf/in.2, 514°F. The air enters the turbine at 1540°F, 87 lbf/in.2 and expands to 917°F, 14.5 lbf/in.2 The compressor and turbine operate adiabatically, and kinetic and potential energy effects are negligible. On the basis of an air-standard analysis, a. develop a full accounting of the net exergy increase of the air passing through the gas turbine combustor, in Btu/lb. b. devise and evaluate an exergetic efficiency for the gas turbine cycle. Let T0 = 80°F, p0 = 14.5 lbf/in.2arrow_forwardRefrigerant 134a enters an insulated diffuser as a saturated vapor at 80°F with a velocity of 1400 ft/s. The inlet area is 1.4 in². At the exit, the pressure is 400 lbf/in² and the velocity is negligible. The diffuser operates at steady state and potential energy effects can be neglected. Determine the mass flow rate, in lb/s, and the exit temperature, in °F. Step 1 Determine the mass flow rate, in lb/s. m = i lb/s.arrow_forward
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