A steam pipe is to transport 215 lbm/s of steam at 200 psia and 600°F. Calculate...
1) Steam at 200 psia and 600 F is supplied to a turbine and exhausted at 14.7 psia. The flow is adiabatic, the power output of the turbine is 10000 kW and it's isentropic efficiency is 65 %. Determine the steam rate in lbm/h.
10. (25 Points) Steam enters an insulated nozzle at 140 psia, 600 F with a velocity of 100 ft/s. It leaves the nozzle at 20 psia, 360°F. The mass flow rate is 10 lbm/s. Find: Ans a) b) Ans. The actual kinetic energy of the steam at the exit, in Btu The exit velocity in ft/s for part a) The exit cross sectional area of the nozzle, in in The nozzle isentropic efficiency (%) Show the actual and the ideal...
Calculate the steam mass flow rate in lbm/min; also calculate the exit pipe diameter if the velocity is to be maintained at 7ft/s. Cool water at 60 °F 5 GPM hot water at 20 psig and 180 °F 3 2 Low pressure steam at 20 psig, x=80%
The axial flow steam turbine rotor shown in Fig. P12.69 has a blade outer radius RO 2.40 ft, a blade inner radius Ri 2.00 ft, a steam inlet pressure p1 200 psia, a steam inlet density p1- 0.296 lbm/t3, and an inlet absolute velocity V1 1000 f/s making an angle of 70° with the axial direction. The steam outlet pressure p2 50 psia and outlet density is 0.1014 Ibm/t3. B2 40 The rotor rotates at 3600 rpm. Using a blade...
A ship's steam turbine receives 7200 lbm/min of steam at pressure of 900psia and a velocity of 100ft/s. The steam leaves the turbine at 450 psia with a velocity of 800 ft/s. Specific enthalpy at the inlet and exit, respectively, are 1508.9 Btu/lbm and 1238.5 Btu/lbm. As the steam passes through turbine 12 Btu/lbm of heat is lost to the environment. a) Using the Steady Flow Energy Equation, determine the specific work generated by this turbine. (Btu/lbm) b) Determine the...
2. (60 points) Water that is flowing in a pipe at 25 psia and 200 °F at a rate of 1900 lbm/hr (state 1), cools down to 20 psia and 110 °F (state 2). Then it is mixed with a stream of water at a rate of 1000 lbm/hr at 20 psia and 240 °F (state 3). The mixing process is constant pressure (P2=P;-P) and adiabatic. Find the heat transfer rate from the water (0) and final enthalpy and temperature...
steam enters a turbine at 1000 psia and 1000 degrees celsius, and leaves at 5Psia and 97% quality, the turbine is adiabatic and the power output is 25000 hp. Calculate: 1- the work of the turbine ( in btv/lbm) 2- the mass flow rate in lbm/s, if the work of the turbine is 353.399 btv/lbm 3- the inlet diameter, if the mass flow rate is 60 lbm/s NOTE: inlet velocity ≈ exit velocity =80 ft/s 1hp=2545 btv/hr - Steam turbine...
Consider steady flow of gas in a constant diameter pipe. Explain why the density decrease from inlet to outlet. (2pts) 15 lbm of Trichlorofluoromethane at 50 Psia and-10 °F held in a rigid container is heated to 50 F. Determine the final pressure and volume of the container. (ALL WORK MUST BE IN ENGLISH UNITS). (4 pts) . Consider steady flow of gas in a constant diameter pipe. Explain why the density decrease from inlet to outlet. (2pts) 15 lbm...
Air initially at 120 psia and 500*F is expanded by an adiabatic turbine to 15 psia and 200* F. Assuming air can be treated as an ideal gas and has variable specific heat. a) Determine the specific work output of the actual turbine (Btu/lbm). b) Determine the amount of specific entropy generation during the irreversible process (Btu/lbm R). c) Determine the isentropic efficiency of this turbine (%). d) Suppose the turbine now operates as an ideal compressor (reversible and adiabatic)...
ANSWER PLEASE PROBLEM #2 (68 pts.) Steam at 200 psia, 600°F (State 1) enters an adiabatic turbine cperating at steady state with a mass flow rate of 16.5 lbm/min and exits at 15 psia, 240°F (State 2), Neglecting the changes in kinetic and potential energies and assuming the surroundings to be at T.- 537 R. Determine: a) the actual power output, in Btu/min. b) the reversible (or maximum) power output, in Btu/min. c) the rate of exergy destruction, in Btu/min....