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Question 3 pre-whirl compresses air and has the following dimensions and data: A centrifugal compressor designed...
A medium-size centrifugal air compressor has 32 radial blades and the inlet vanes allow air suction...
A medium-size centrifugal air compressor has 32 radial blades and the inlet vanes allow air suction with no pre. whirl. The rotor speed is 7800 rpm and the tip radius is r2 = 0.25 m. Air is sucked in at a static temperature T1 = 305 K with an absolute velocity V1 = 80 m/s and a mass flow rate of 1.65 kg/s. The total-to total efficiency of the compressor is 80% and the power input factor is w =...
The centrifugal pump as described in Q5.8 is operating with a pre-whirl of 10° (i.e. Ui is inclin...
The centrifugal pump as described in Q5.8 is operating with a pre-whirl of 10° (i.e. Ui is inclined by 10° from the radial axis in the rotational direction). The centrifugal pump delivers 0.45 m3/s ofwater when it is running at the angular velocity of ω-1200 rpm Sketch the velocity triangles at inlet and exit of the impeller and hence determine the following items by assuming (a) negligible losses; and (b) Vi enters the impeller with θ| and V2 leaves with...
n Q6. A backward curved centrifugal compressor is to compress air. The diameter of the impeller...
n Q6. A backward curved centrifugal compressor is to compress air. The diameter of the impeller is 0.6 m and the outlet blade angle is 60°. The peripheral area is 0.002 m' and the flow coefficient (ratio of normal component i.e flow velocity component to tip speed) is 0.5. If the pressure and temperature of air at the exit of the impeller are found to be (7.702+; -) bar and 40°C, find the 100 specific work (kJ/kg) and power input...
Tesponse. Question 2 of 7 Question 2 4 points Save Ar A centrifugal compressor has an...
Tesponse. Question 2 of 7 Question 2 4 points Save Ar A centrifugal compressor has an impeller exit diameter of 0.4 is running at 18,761 rpm. The stagnation temperature at inlet is 292 K. The total-to-total efficiency is 0.8 % and the slip factor is 0.8. Calculate the pressure ratio DELL $ 4 % -1. 5 6 7 / 7 0 3 المي 2 T ۲ De Y R E ² W 0 cs . Hi ] TI G D...
A centrifugal air compressor used in a gas turbine receives air at 100 kPa and 300...
A centrifugal air compressor used in a gas turbine receives air at 100 kPa and 300 K and discharges it at 400 kPa and 500 K. The velocity of the compressor's outgoing air is 100 m / s. Ignoring the speed at the compressor inlet. Determine the power required to drive the compressor, in kW, if the mass flow is 15 kg / s. Take the Cp of air equal to 1 kJ / (kg K) and assume that there...
Anyone can help me ans Q-5? Question 6 A centrifugal compressor is required to deliver 8...
Anyone can help me ans Q-5?
Question 6 A centrifugal compressor is required to deliver 8 kg/s of air with a stagnation pressure ratio of 4 rotating at 15,000 rpm. The air enters the compressor at 25°C an 1 bar. Assume that the air enters axially with velocity of 145 m/s and the slip factor is 0.89. The compressor isentropic efficiency is 0.89. Calculate: 4 the rise in stagnation temperature а) (6 marks) work input b) (2 marks) c) impeller...
Problem 2 C /25) A centrifugal compressor operating at 1500 rpm compresses air from 27 °C...
Problem 2 C /25) A centrifugal compressor operating at 1500 rpm compresses air from 27 °C and 10 kPa (Gage) to 80 kPa (Gage) at a mass flow rate of 2.6 kg/s. A bigger model is built by scaling up the impeller diameter by 50% of the original size. The model is to be tested with a gas that has the following properties: (Cp = 2.01 and c, = 0.76 ) at inlet conditions of 60 °C and 190 kPa...
Question 3 Consider an axial compressor with blades installed at given angle with respect to inco...
Question 3 Consider an axial compressor with blades installed at given angle with respect to incoming airflow The ccmpressor has diameter of 1.0 m and rotates at 3000 rpm. Air mass flow rate through compre sso is 110 kg/s. Pressure and temperature of air at the inlet of the compressor are 1 atm and 300K. Compressor blades are installed at 50° with respect to the axial plane. Conclude whether this compressor can operate at the designed speed of 3000 rpm....
A one stage axial air compressor consists of a rotor and a stator, it has a...
A one stage axial air compressor consists of a rotor and a stator, it has a mean diameter of Im for the rotor and a rotational speed of 7645 RPM. Furthermore: Mass flow rate is 50 kg/s .Inlet static temperature and pressure of Ti 276 K and Pi 85 kPa. .Inlet stagnation temperature and pressure of Toi 290 K and Poi 101.3 kPa. .Inlet absolute velocity C1 166.5 m/s Rotor exit static density (p2) equals to 1.3kg/m3 Axial component of...
b) A radial vaned centrifugal compressor delivers 0.3 m3/s against a head of 20 m. The...
b) A radial vaned centrifugal compressor delivers 0.3 m3/s against a head of 20 m. The flow velocity is constant at 3 m/s. The manometric efficiency is 80%. If the width is 1/10th of the diameter, calculate the diameter, width and speed. The eye diameter is O C0.5 of outer diameter. Calculate the dimensions of inlet. a contrifudal compreesor havina imoeller of inner diameter 20 cm & outer diameter of
A medium-size centrifugal air compressor has 32 radial blades and the inlet vanes allow air suction with no pre. whirl. The rotor speed is 7800 rpm and the tip radius is r2 = 0.25 m. Air is sucked in at a static temperature T1 = 305 K with an absolute velocity V1 = 80 m/s and a mass flow rate of 1.65 kg/s. The total-to total efficiency of the compressor is 80% and the power input factor is w =...
The centrifugal pump as described in Q5.8 is operating with a pre-whirl of 10° (i.e. Ui is inclined by 10° from the radial axis in the rotational direction). The centrifugal pump delivers 0.45 m3/s ofwater when it is running at the angular velocity of ω-1200 rpm Sketch the velocity triangles at inlet and exit of the impeller and hence determine the following items by assuming (a) negligible losses; and (b) Vi enters the impeller with θ| and V2 leaves with...
n Q6. A backward curved centrifugal compressor is to compress air. The diameter of the impeller is 0.6 m and the outlet blade angle is 60°. The peripheral area is 0.002 m' and the flow coefficient (ratio of normal component i.e flow velocity component to tip speed) is 0.5. If the pressure and temperature of air at the exit of the impeller are found to be (7.702+; -) bar and 40°C, find the 100 specific work (kJ/kg) and power input...
Tesponse. Question 2 of 7 Question 2 4 points Save Ar A centrifugal compressor has an impeller exit diameter of 0.4 is running at 18,761 rpm. The stagnation temperature at inlet is 292 K. The total-to-total efficiency is 0.8 % and the slip factor is 0.8. Calculate the pressure ratio DELL $ 4 % -1. 5 6 7 / 7 0 3 المي 2 T ۲ De Y R E ² W 0 cs . Hi ] TI G D...
Anyone can help me ans Q-5?
Question 6 A centrifugal compressor is required to deliver 8 kg/s of air with a stagnation pressure ratio of 4 rotating at 15,000 rpm. The air enters the compressor at 25°C an 1 bar. Assume that the air enters axially with velocity of 145 m/s and the slip factor is 0.89. The compressor isentropic efficiency is 0.89. Calculate: 4 the rise in stagnation temperature а) (6 marks) work input b) (2 marks) c) impeller...
Problem 2 C /25) A centrifugal compressor operating at 1500 rpm compresses air from 27 °C and 10 kPa (Gage) to 80 kPa (Gage) at a mass flow rate of 2.6 kg/s. A bigger model is built by scaling up the impeller diameter by 50% of the original size. The model is to be tested with a gas that has the following properties: (Cp = 2.01 and c, = 0.76 ) at inlet conditions of 60 °C and 190 kPa...
Question 3 Consider an axial compressor with blades installed at given angle with respect to incoming airflow The ccmpressor has diameter of 1.0 m and rotates at 3000 rpm. Air mass flow rate through compre sso is 110 kg/s. Pressure and temperature of air at the inlet of the compressor are 1 atm and 300K. Compressor blades are installed at 50° with respect to the axial plane. Conclude whether this compressor can operate at the designed speed of 3000 rpm....
A one stage axial air compressor consists of a rotor and a stator, it has a mean diameter of Im for the rotor and a rotational speed of 7645 RPM. Furthermore: Mass flow rate is 50 kg/s .Inlet static temperature and pressure of Ti 276 K and Pi 85 kPa. .Inlet stagnation temperature and pressure of Toi 290 K and Poi 101.3 kPa. .Inlet absolute velocity C1 166.5 m/s Rotor exit static density (p2) equals to 1.3kg/m3 Axial component of...
b) A radial vaned centrifugal compressor delivers 0.3 m3/s against a head of 20 m. The flow velocity is constant at 3 m/s. The manometric efficiency is 80%. If the width is 1/10th of the diameter, calculate the diameter, width and speed. The eye diameter is O C0.5 of outer diameter. Calculate the dimensions of inlet. a contrifudal compreesor havina imoeller of inner diameter 20 cm & outer diameter of
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