2B1 Steam Turbine Calculations

Calculate the turbine’s thermal efficiency in a steam plant generating power which is produced by a boiler at a rate of 235,000 kg/h at an absolute pressure of 6,000 kPa and 500°C. The feedwater temperature entering the boiler is 155°C. The fuel consumption is 26, 000 kg/h. The calorific value of the fuel is 30,600 kJ/kg and the turbine develops 41 MW.

Calculate the boiler efficiency in a steam plant generating power which is produced by a boiler at a rate of 235,000 kg/h at an absolute pressure of 6,000 kPa and 500°C. The feedwater temperature entering the boiler is 155°C. The fuel consumption is 26, 000 kg/h. The calorific value of the fuel is 30,600 kJ/kg and the turbine develops 41 MW.

Determine the steam pressure exiting the boiler installed in a condensing steam plant with a rankine efficiency of 30%, steam leaves the boiler at 400°C. The condensers absolute pressure is 22.60 mm of mercury and the turbine exhaust is 11% wet.

Calculate the following on the basis of one kg of steam supplied per second in an impulse turbine with the theoretical enthalpy drop of the steam through the nozzles is 311.5 kJ/kg and 10% of this is lost in friction in the nozzles. The nozzle angle is 20°, the inlet angle of the blades is 35°, and the absolute velocity of the steam leaving the blades is 205 m/s in the direction of the axis of the turbine. The blading efficiency.

Calculate the following on the basis of one kg of steam supplied per second in an impulse turbine with the theoretical enthalpy drop of the steam through the nozzles is 311.5 kJ/kg and 10% of this is lost in friction in the nozzles. The nozzle angle is 20°, the inlet angle of the blades is 35°, and the absolute velocity of the steam leaving the blades is 205 m/s in the direction of the axis of the turbine. The power supplied.

Calculate the following on the basis of one kg of steam supplied per second in an impulse turbine with the theoretical enthalpy drop of the steam through the nozzles is 311.5 kJ/kg and 10% of this is lost in friction in the nozzles. The nozzle angle is 20°, the inlet angle of the blades is 35°, and the absolute velocity of the steam leaving the blades is 205 m/s in the direction of the axis of the turbine. The axial thrust.

Calculate the following on the basis of one kg of steam supplied per second in an impulse turbine with the theoretical enthalpy drop of the steam through the nozzles is 311.5 kJ/kg and 10% of this is lost in friction in the nozzles. The nozzle angle is 20°, the inlet angle of the blades is 35°, and the absolute velocity of the steam leaving the blades is 205 m/s in the direction of the axis of the turbine. The energy lost due to friction of the steam across the blades.

Calculate the following on the basis of one kg of steam supplied per second in an impulse turbine with the theoretical enthalpy drop of the steam through the nozzles is 311.5 kJ/kg and 10% of this is lost in friction in the nozzles. The nozzle angle is 20°, the inlet angle of the blades is 35°, and the absolute velocity of the steam leaving the blades is 205 m/s in the direction of the axis of the turbine. The exit blade angle.

Calculate the following on the basis of one kg of steam supplied per second in an impulse turbine with the theoretical enthalpy drop of the steam through the nozzles is 311.5 kJ/kg and 10% of this is lost in friction in the nozzles. The nozzle angle is 20°, the inlet angle of the blades is 35°, and the absolute velocity of the steam leaving the blades is 205 m/s in the direction of the axis of the turbine. The blade velocity to prevent steam entry shock.

The steam velocity exiting the nozzles of an impulse turbine is 885 m/s and the nozzle angle is 22 degrees. The blade velocity is 310 m/s and the blade velocity coefficient is 0.80. Calculate the axial thrust taking the mass flow of 1 kg/s and symmetrical blading.

The steam velocity exiting the nozzles of an impulse turbine is 885 m/s and the nozzle angle is 22 degrees. The blade velocity is 310 m/s and the blade velocity coefficient is 0.80. Calculate the diagram power taking the mass flow of 1 kg/s and symmetrical blading.

The steam velocity exiting the nozzles of an impulse turbine is 885 m/s and the nozzle angle is 22 degrees. The blade velocity is 310 m/s and the blade velocity coefficient is 0.80. Calculate the driving force on the wheel taking the mass flow of 1 kg/s and symmetrical blading.

The steam velocity exiting the nozzles of an impulse turbine is 885 m/s and the nozzle angle is 22 degrees. The blade velocity is 310 m/s and the blade velocity coefficient is 0.80. Calculate the blade inlet angle taking the mass flow of 1 kg/s and symmetrical blading.

In a certain stage of a reaction turbine, the steam exits the guide blades and enters the moving blades at an absolute velocity of 245 m/s at a 25 degree angle to the plane of rotation and the blade velocity is 160 m/s. The moving and fixed blades have the same inlet and exit angles and the steam flow is 0.91 kg/s. Determine the stage power.

In a certain stage of a reaction turbine, the steam exits the guide blades and enters the moving blades at an absolute velocity of 245 m/s at a 25 degree angle to the plane of rotation and the blade velocity is 160 m/s. The moving and fixed blades have the same inlet and exit angles and the steam flow is 0.91 kg/s. Determine the force on the blades.

In a certain stage of a reaction turbine, the steam exits the guide blades and enters the moving blades at an absolute velocity of 245 m/s at a 25 degree angle to the plane of rotation and the blade velocity is 160 m/s. The moving and fixed blades have the same inlet and exit angles and the steam flow is 0.91 kg/s. Determine the inlet and exit angles of the blades.

Steam exits the guide blades of a reaction turbine at 150 m/s. If the inlet angle of the moving blades is 40 degrees and the exit angles from the guide blades is 34 degrees determine the mean blade speed.

Steam exits the nozzles of a single stage impulse turbine at 1100 m/s, the angle of the jet is 21 degrees to the direction of the movement of the blades. If the blade speed is 310 m/s determine the magnitude and direction of the absolute velocity of the steam at the exhaust.

Steam exits the nozzles of a single stage impulse turbine at 1100 m/s, the angle of the jet is 21 degrees to the direction of the movement of the blades. If the blade speed is 310 m/s determine the inlet angle of the blades.

Steam exits the nozzles of a single stage impulse turbine at 1100 m/s, the angle of the jet is 21 degrees to the direction of the movement of the blades. If the blade speed is 310 m/s determine velocity of whirl.

The mean blade diameter on a single stage impulse turbine is 610 mm with a blade velocity of 110 m/s. Determine the axial component of the steam at the blades inlet if the nozzle angle is 19 degrees and the enthalpy drop across the nozzles is 470 kJ/kg.

The mean blade diameter on a single stage impulse turbine is 610 mm with a blade velocity of 110 m/s. Determine the rotational speed of the turbine if the nozzle angle is 19 degrees and the enthalpy drop across the nozzles is 470 kJ/kg.

The mean blade diameter on a single stage impulse turbine is 610 mm with a blade velocity of 110 m/s. Determine the blade inlet angle if the nozzle angle is 19 degrees and the enthalpy drop across the nozzles is 470 kJ/kg.

Steam exits the nozzles at 480 m/s. The steam approaches at an angle of 19 degrees to the direction of blade movement and has an entrance angle of 34 degrees relative to the blades. The mean diameter of the rotor block assembly is 740 mm. Determine the turbines RPM.

Steam exits the nozzles at 480 m/s. The steam approaches at an angle of 19 degrees to the direction of blade movement and has an entrance angle of 34 degrees relative to the blades. The mean diameter of the rotor block assembly is 740 mm. Determine the linear blade velocity.

500 kPa steam enters a convergent-divergent nozzle. There is a 170 kJ/kg heat drop between the entrance and the throat where the pressure drops to 225 kPa. Determine the nozzle throat area required for a steam flow of 13 kg per minute

13 kg/s steam at 500 kPa 250°C is expanded in a group of nozzles to 100 kPa. If the isentropic efficiency of the turbine is 0.91 determine the exit area of the nozzles.

13 kg/s steam at 500 kPa 250°C is expanded in a group of nozzles to 100 kPa. If the isentropic efficiency of the turbine is 0.91 determine the steam velocity.

Steam enters the nozzle of a turbine at 1000 kPa and 300°C. Steam exits the nozzle at 750 kPa and 0.98 dry. If the area of the nozzle outlet is 330 mm2, determine the mass of steam traveling through the nozzle per minute.

Steam enters the nozzle of a turbine at 1000 kPa and 300°C. Steam exits the nozzle at 750 kPa and 0.98 dry. Determine the velocity of the steam at the nozzle outlet.

2000 kPa steam at 400°C enters a steam turbine nozzle and exits at 1500 kPa 96% dry. Determine the mass of steam discharged per minute if the exit area is 325 mm2.

2000 kPa steam at 400°C enters a steam turbine nozzle and exits at 1500 kPa 96% dry. Determine the steam exit velocity.

1450 kPa steam at 300°C enters the nozzle of a turbine and leaves at 1300 kPa dry and saturated. Determine the weight of steam discharged per minute if the exit area is 4.25 cm2

1450 kPa steam at 300°C enters the nozzle of a turbine and leaves at 1300 kPa dry and saturated. Determine the velocity of the steam at the nozzle exit.