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A radial inward flow type Francis turbine operates with an effective pressure of 85.2 kPa. The...
3) (35 points) A Francis turbine operates at its maximum efficiency point at nH-0.94, corresponding to...
3) (35 points) A Francis turbine operates at its maximum efficiency point at nH-0.94, corresponding to a power specific speed (eq.9.1) of 0.9 rad. The effective head, HE, across the turbine is 160 m and the speed required for electrical generation is 750 rpm. The runner tip speed is 0.7 times the spouting velocity, co 2gHg, the absolute flow angle at runner entry is 72° from the radial direction, and the absolute flow at runner exit is without swirl. Determine:...
The following data is given for a Francis turbine with an axial discharge Overall efficiency Hydraulic...
The following data is given for a Francis turbine with an axial discharge Overall efficiency Hydraulic efficiency Power produced Net head 75 % 78 % 148.25 kW 7.62 m 3.179 m/s The wheel peripheral velocity at inlet The radial velocity of the flow at inlet The runner diameter at inlet 11.738 m/s 0.4047 m The guide blade angle (with respect to the radial direction) is 57.4 36 5 30.8 28.8 e following data is given for a Fra... The following...
please solve 5(b) and 6 (a and b) fluid machinery b)An inward flow reaction turbine works under a head of 100m. The inlet and outlet diameters of the runner are 1.2 m and 0.6 m, respectively. The...
please solve 5(b) and 6 (a and b) fluid machinery
b)An inward flow reaction turbine works under a head of 100m. The inlet and outlet diameters of the runner are 1.2 m and 0.6 m, respectively. The width of the runner is 150 mm, which is constant throughout. The velocity of flow at the outlet is 6 m/s. The blade angle at the outlet is 15. The hydraulic efficiency is 0.9. Calculate the following: ) The speed of the Turbine...
s: A wind turbine operates under the fol... A wind turbine operates under the following conditions...
s: A wind turbine operates under the fol... A wind turbine operates under the following conditions Wind speed-8.6 m's Rotor coefficient of performance Cp-04 Blade length -4m Angular speed- 175 rpm Density of air- 1.23 kg m Transmission efficiency of Ntr-70%% Generator efficiency Ng-95% Determine the followings and Do not put units in your answer and all numerical values up to 2 decimal places. X]-The blades tip speed in m's [Y]-The Tip Speed Ratio (TSR) [z)-Swept rotor area "A" in...
1 MPa pressure and 500 oC temperature and 200 m/s air enters a turbine. 150 kPa...
1 MPa pressure and 500 oC temperature and 200 m/s air enters a turbine. 150 kPa pressure rises at 150 oC temperature and 250 m/s speed. Since the sectional area is 80 square centimeters. a. Mass flow of air b. The power produced by the turbine c. Find the adiabatic efficiency of the turbine.
1 MPa pressure and 500 oC temperature and 200 m/s air enters a turbine. 150 kPa...
1 MPa pressure and 500 oC temperature and 200 m/s air enters a turbine. 150 kPa pressure rises at 150 oC temperature and 250 m/s speed. Since the sectional area is 80 square centimeters square. a. Mass flow of air b. The power produced by the turbine c. Find the adiabatic efficiency of the turbine. I
mass flow rate 15 kh/s DATA: Mass Flow Rate 15 kg/s Inlet Stagnation Pressure = 1013...
mass flow rate 15 kh/s
DATA: Mass Flow Rate 15 kg/s Inlet Stagnation Pressure = 1013 kPa Inlet Stagnation Temperature 1200 K Mean Blade Diameter 25 cm Rotor Speed 26,500 rpm Fou usbine Axial Velocity- 180 m/s inlet to Rotor Angle, α= 700 Exit Rotor Angle as 0 Assuming variable specific heats and the axial velocity remains constant; (a) Construct the velocity diagrams for the stage (b) Calculate work, Aw (c) The power developed based on the mean blade diameter,...
A simple Rankine cycle uses water as the working fluid. The boiler operates at 6000 kPa...
A simple Rankine cycle uses water as the working fluid. The boiler operates at 6000 kPa and the condenser at 40 kPa. At the entrance to the turbine, the temperature is 380 °C. The isentropic efficiency of the turbine is 88 %, pressure and pump losses are negligible, and the water leaving the condenser is subcooled by 5.9 °C. The boiler is sized for a mass flow rate of 17 kg/s. Determine the following values. °C m®/kg 1 kJ/kg (1)...
In an impulse turbine of the Pelton type, the jet is turned by the bucket by...
In an impulse turbine of the Pelton type, the jet is turned by the bucket by 165°. The head available at the nozzle is 750 m and blade speed ratio is 0.46. Cv = 0.98. Relative velocity is reduced by 12% due to friction. Determine the hydraulic efficiency. If the flow available is 20 m3/s. What is the power potential. Assuming 5 units of equal power, determine the jet diameter and wheel diameter if d/D = 12.
Problem 1 (15 pts) A gas turbine cycle operates with a compressor pressure ratio of 12...
Problem 1 (15 pts) A gas turbine cycle operates with a compressor pressure ratio of 12 and a mass flow rate of 5.0 kg/s. Air enters the compressor at 1 bar, 290 K. The maximum cycle temperature is 1600 K. For the compressor, the isentropic efficiency is 85%, and for the turbine the isentropic efficiency is 90%. Using an air-standard analysis with air as ideal gas with constant specific heats, calculate: a) the volumetric flow rate of air entering the...
3) (35 points) A Francis turbine operates at its maximum efficiency point at nH-0.94, corresponding to a power specific speed (eq.9.1) of 0.9 rad. The effective head, HE, across the turbine is 160 m and the speed required for electrical generation is 750 rpm. The runner tip speed is 0.7 times the spouting velocity, co 2gHg, the absolute flow angle at runner entry is 72° from the radial direction, and the absolute flow at runner exit is without swirl. Determine:...
The following data is given for a Francis turbine with an axial discharge Overall efficiency Hydraulic efficiency Power produced Net head 75 % 78 % 148.25 kW 7.62 m 3.179 m/s The wheel peripheral velocity at inlet The radial velocity of the flow at inlet The runner diameter at inlet 11.738 m/s 0.4047 m The guide blade angle (with respect to the radial direction) is 57.4 36 5 30.8 28.8 e following data is given for a Fra... The following...
please solve 5(b) and 6 (a and b) fluid machinery
b)An inward flow reaction turbine works under a head of 100m. The inlet and outlet diameters of the runner are 1.2 m and 0.6 m, respectively. The width of the runner is 150 mm, which is constant throughout. The velocity of flow at the outlet is 6 m/s. The blade angle at the outlet is 15. The hydraulic efficiency is 0.9. Calculate the following: ) The speed of the Turbine...
s: A wind turbine operates under the fol... A wind turbine operates under the following conditions Wind speed-8.6 m's Rotor coefficient of performance Cp-04 Blade length -4m Angular speed- 175 rpm Density of air- 1.23 kg m Transmission efficiency of Ntr-70%% Generator efficiency Ng-95% Determine the followings and Do not put units in your answer and all numerical values up to 2 decimal places. X]-The blades tip speed in m's [Y]-The Tip Speed Ratio (TSR) [z)-Swept rotor area "A" in...
1 MPa pressure and 500 oC temperature and 200 m/s air enters a turbine. 150 kPa pressure rises at 150 oC temperature and 250 m/s speed. Since the sectional area is 80 square centimeters. a. Mass flow of air b. The power produced by the turbine c. Find the adiabatic efficiency of the turbine.
1 MPa pressure and 500 oC temperature and 200 m/s air enters a turbine. 150 kPa pressure rises at 150 oC temperature and 250 m/s speed. Since the sectional area is 80 square centimeters square. a. Mass flow of air b. The power produced by the turbine c. Find the adiabatic efficiency of the turbine. I
mass flow rate 15 kh/s
DATA: Mass Flow Rate 15 kg/s Inlet Stagnation Pressure = 1013 kPa Inlet Stagnation Temperature 1200 K Mean Blade Diameter 25 cm Rotor Speed 26,500 rpm Fou usbine Axial Velocity- 180 m/s inlet to Rotor Angle, α= 700 Exit Rotor Angle as 0 Assuming variable specific heats and the axial velocity remains constant; (a) Construct the velocity diagrams for the stage (b) Calculate work, Aw (c) The power developed based on the mean blade diameter,...
A simple Rankine cycle uses water as the working fluid. The boiler operates at 6000 kPa and the condenser at 40 kPa. At the entrance to the turbine, the temperature is 380 °C. The isentropic efficiency of the turbine is 88 %, pressure and pump losses are negligible, and the water leaving the condenser is subcooled by 5.9 °C. The boiler is sized for a mass flow rate of 17 kg/s. Determine the following values. °C m®/kg 1 kJ/kg (1)...
Problem 1 (15 pts) A gas turbine cycle operates with a compressor pressure ratio of 12 and a mass flow rate of 5.0 kg/s. Air enters the compressor at 1 bar, 290 K. The maximum cycle temperature is 1600 K. For the compressor, the isentropic efficiency is 85%, and for the turbine the isentropic efficiency is 90%. Using an air-standard analysis with air as ideal gas with constant specific heats, calculate: a) the volumetric flow rate of air entering the...
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