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Steam turbines are power generating turbo machine not power absorbing .
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Question 8 1. steam turbines are power-absorbing machines True False Question 8 1. steam turbines are...
The figure shows a schematic of a power plant that has two steam turbines. The water...
The figure shows a schematic of a power plant that has two steam turbines. The water (the working fluid for the plant) leaves the high pressure turbine (HPT) as saturated vapour at 1000 [kPa]. Part of this flow is diverted to an insulated heat exchanger, which we hot airstream to create superheated steam that enters the low pressure turbine (LPT). The air mas flow rate is 19.5 k/s and the air temperature drops from 1100 to 6001 as it goes...
1.In practice, steam and gas turbines are heavily insulated. What is the effect of insulating a...
1.In practice, steam and gas turbines are heavily insulated. What is the effect of insulating a turbine on the turbine power output when the steam mass flow rate, inlet and outlet conditions are fixed? Your qualitative explanation must refer to the steady flow energy equation. 2.For a specified turbine power output with fixed inlet and outlet conditions, explain what happens to the steam mass flow rate when a turbine is insulated.
Question 3 What are methods for improving the efficiency of steam power plant? Use of high...
Question 3 What are methods for improving the efficiency of steam power plant? Use of high pressure O Reheating of steam Use of high grade coal All of the mentioned estion 4 High head in hydro-electric plants requires the use of Kaplan turbines Francis turbines Pelton turbines O all of the above
The figure shows a schematic of a power plant that has two steam turbines. The water...
The figure shows a schematic of a power plant that has two steam turbines. The water (the working fluid for the plant) leaves the high pressure turbine (HPT) as saturated vapour at 1000 [kPa]. Part of this flow is diverted to an insulated heat exchanger, which uses a hot air stream to create superheated steam that enters the low pressure turbine (LPT). The air mass flow rate is me=19.5 kg/s) and the air temperature drops from 1100 to 600°Cas it...
A power plant operates one of its steam turbines at a speed of 1800rpm and a steam flow of 139 kg/s with a nozzle velocity coefficient (K) of 0.96. The inlet and outlet steam pressures are 69 bar an...
A power plant operates one of its steam turbines at a speed of 1800rpm and a steam flow of 139 kg/s with a nozzle velocity coefficient (K) of 0.96. The inlet and outlet steam pressures are 69 bar and 27.6 bar, respectively. Windage and leakage losses are noted to be 3%. The turbine blades are oriented such that the blading angles are13" and 24" with a blade velocity of 70m/s. Using the blade velocity vector diagram (Figure 2), a velocity...
power plant /Steam Turbines/Impules Turbine i need solution in 30 minutes Q2) A single stage simple...
power plant /Steam Turbines/Impules Turbine
i need solution in 30 minutes
Q2) A single stage simple impulse turbine generator set is to operate under the following conditions. Steam at inlet :8 bar, dry saturated Exhaust :0.2 bar Nozzle efficiency :0.9 Nozzle angle :15° Internal efficiency :0.75 Mechanical efficiency :0.92 Generator efficiency :0.9 Find (a) the mean blade speed for maximum blading efficiency, (b) the steam flow rate for developing 200 kW.
A combined cycle power plant consists of two gas turbines; cach produces a net power of...
A combined cycle power plant consists of two gas turbines; cach produces a net power of 160 MW, and a 70 MW steam power cycle. The combustion of the fuel in the combustion chamber produces hot gases at 1400°C. The hot gases leaving the gas turbines are used to generate steam through the heat recovery steam generator (Boiler). The hot gases enter the heat recovery steam generator at 880°C and leaves at 660°C. Water enters the isentropic pump as saturated...
1. An executive of a company “Perpetual Turbines” claims that his engineers have designed a steam...
1. An executive of a company “Perpetual Turbines” claims that his engineers have designed a steam turbine with the following parameters: • inlet conditions: T = 500◦C and p = 6MPa; • outlet conditions: p = 0.1MPa; • work performed by the turbine per 1kg of steam is w = 1200kJ/kg; • turbine is adiabatically isolated. Evaluate: (a) specific enthalpy at the inlet and outlet of the turbine; (b) phase descriptions of the steam entering and leaving the turbine (e.g.,...
Question 3 [30 marks] A reheat Rankine cycle is designed for a steam power plant. Steam...
Question 3 [30 marks] A reheat Rankine cycle is designed for a steam power plant. Steam enters both the high- and low- pressure turbines at 600oC. The maximum and minimum pressures of the cycle are 20 MPa and 20 kPa, respectively. Steam leaves the condenser as a saturated liquid. The moisture content of the steam at the exit of the low-pressure turbine is 4% if the actual expansion process is adiabatic; 8.5% if the ideal expansion process is isentropic. The...
A reheat power plant operates between the pressures of 10 MPa and 5 kPa. Steam enters...
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...
The figure shows a schematic of a power plant that has two steam turbines. The water (the working fluid for the plant) leaves the high pressure turbine (HPT) as saturated vapour at 1000 [kPa]. Part of this flow is diverted to an insulated heat exchanger, which we hot airstream to create superheated steam that enters the low pressure turbine (LPT). The air mas flow rate is 19.5 k/s and the air temperature drops from 1100 to 6001 as it goes...
Question 3 What are methods for improving the efficiency of steam power plant? Use of high pressure O Reheating of steam Use of high grade coal All of the mentioned estion 4 High head in hydro-electric plants requires the use of Kaplan turbines Francis turbines Pelton turbines O all of the above
The figure shows a schematic of a power plant that has two steam turbines. The water (the working fluid for the plant) leaves the high pressure turbine (HPT) as saturated vapour at 1000 [kPa]. Part of this flow is diverted to an insulated heat exchanger, which uses a hot air stream to create superheated steam that enters the low pressure turbine (LPT). The air mass flow rate is me=19.5 kg/s) and the air temperature drops from 1100 to 600°Cas it...
A power plant operates one of its steam turbines at a speed of 1800rpm and a steam flow of 139 kg/s with a nozzle velocity coefficient (K) of 0.96. The inlet and outlet steam pressures are 69 bar and 27.6 bar, respectively. Windage and leakage losses are noted to be 3%. The turbine blades are oriented such that the blading angles are13" and 24" with a blade velocity of 70m/s. Using the blade velocity vector diagram (Figure 2), a velocity...
power plant /Steam Turbines/Impules Turbine
i need solution in 30 minutes
Q2) A single stage simple impulse turbine generator set is to operate under the following conditions. Steam at inlet :8 bar, dry saturated Exhaust :0.2 bar Nozzle efficiency :0.9 Nozzle angle :15° Internal efficiency :0.75 Mechanical efficiency :0.92 Generator efficiency :0.9 Find (a) the mean blade speed for maximum blading efficiency, (b) the steam flow rate for developing 200 kW.
A combined cycle power plant consists of two gas turbines; cach produces a net power of 160 MW, and a 70 MW steam power cycle. The combustion of the fuel in the combustion chamber produces hot gases at 1400°C. The hot gases leaving the gas turbines are used to generate steam through the heat recovery steam generator (Boiler). The hot gases enter the heat recovery steam generator at 880°C and leaves at 660°C. Water enters the isentropic pump as saturated...
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...
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