Im just really looking for the work to double check my answers. i got a.) 29.76...
thermo question 2. (20 points) Steam enters a turbine operating at steady state at 2 MPa, 360°C with a velocity of 100 m/s. Saturated vapor exits at 0.1 MPa and a velocity of 50 m/s. The elevation of the inlet is 3 m higher than at the exit. The mass flow rate of the steam is 15 kg's, and the power developed is 7 MW. Let g -9.81 m/s Determine (a) the area at the inlet, in m, and (b)...
Steam enters a turbine operating at steady state at 2 MPa, 360 °C with a velocity of 52 m/s. Saturated vapor exits at 0.1 MPa and a velocity of 35 m/s. The elevation of the inlet is 1 m higher than at the exit. The mass flow rate of the steam is 21 kg/s, and the power developed is 5 MW. Let g = 9.81 m/s2. Determine the area at the inlet, in m2.
1. Water enters the constant 130-mm inside-diameter tubes of a boiler at 7 MPa and 65°C and leaves the tubes at 6 MPa and 450°C with a velocity of 80 m/s. Calculate the velocity of the water at the tube inlet and the inlet volume flow rate. [5-14] 2. Air enters a nozzle steadily at 50 psia, 140°F, and 150 ft/s and leaves at 14.7 psia and 900 ft/s. The heat loss from the nozzle is estimated to be 6.5...
4-1-30 [WX] An adiabatic steam nozzle operates steadily under the following conditions. Inlet: superheated vapor, p1 = 1 MPa, T1 = 300°C, A1 78.54 cm2; Exit: saturated vapor, p2 = 100 kPa. Determine (a) the exit velocity (V2) in m/s, (b) the rate of entropy Solution] [Discuss] generation (Šgen) in kW/K. The mass flow rate (m is 1 kg/s.
Steam enters a turbine operating at steady state at 30 bar, 400 °C with a mass flow rate of 126 kg/min and exits as saturated vapor at 0.2 bar, producing power at a rate of 1.5 MW. Kinetic and potential energy effects can be ignored. Determine the followings. (a) (5 points) The rate of heat transfer, in kW. (b) (15 points) The rate of entropy production, in kW/K, for an enlarged control volume that includes the turbine and enough of...
A reheat power plant operates between the pressures of 10 MPa and 5 kPa. Steam enters the high and low pressure turbines at 400 °C. If the steam leaves the high pressure turbine at 4 MPa and steam is at saturated vapour state at the end of both turbines, total specific power output of this power plant is; A heat pump is absorbing heat from the cold outdoors at 5°C and supplying heat to a house at 25°C at a...
A power plant operates on a regenerative vapor power cycle with one open feedwater heater. Steam enters the first turbine stage at 12 MPa, 560°C and expands to 1 MPa, where some of the steam is extracted and diverted to the open feedwater heater operating at 1 MPa. The remaining steam expands through the second turbine stage to the condenser pressure of 6 kPa. Saturated liquid exits the open feedwater heater at 1 MPa. The net power output for the...
A power plant operates on a regenerative vapor power cycle with one open feedwater heater. Steam enters the first turbine stage at 12 MPa, 560°C and expands to 1 MPa, where some of the steam is extracted and diverted to the open feedwater heater operating at 1 MPa. The remaining steam expands through the second turbine stage to the condenser pressure of 28 kPa. Saturated liquid exits the open feedwater heater at 1 MPa. The net power output for the...
Problem 2: (50 points) Steam is the work Saturated vapor enters the turbine at (50 points) Steam is the working fluid in an ideal Rankine cycle. ated vapor enters the turbine at BO MPa and saturated liquid exits the ser at a pressure of 0.006 MPa. The not power output of the cycle is 500 MW.Also he = 1812.2 kJ/kg and he 157.56 kJ/kg a. Thermal Efficiency (30 points) b. Mass flow rate in kg/h (20 points) c. Bonus: Qin...
Homework 2 Problem 1: A piston-cylinder device initially contains 0.35-kg steam at 3.5 MPa, superheated by 7.4 C. Now the stream loses heat to the surroundings and the piston moves down, hitting a set of stops at which point the cylinder contains saturated liquid water. The cooling continues until the cylinder contains water at 200C. Determine (a) the final pressure and the quality (if mixture), (b) the boundary work, (c) the amount of heat transfer when the piston first hits...