A turbine receives steam at 60bar and 3500C and the power output is 5000kW. For industrial...
A turbine receives steam at 60bar and 3500C and the power output is 5000kW. For industrial process heating, it is planned to bleed off 4000kg of steam per hour at a temperature of 2500C from the turbine. Find the boiler capacity and the reduction in power output from the turbine. Assume isentropic efficiency of the turbine as 100% and the condenser pressure of 0.04 bar. Write down all the assumption you made.
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A turbine receives steam at 60bar and 3500C and the power output
is 5000kW. For industrial...
An open cycle power plant is to be designed such that the turbine output is directly...
An open cycle power plant is to be designed such that the turbine output is directly used for industrial process heating. The industrial process required 5kg/s steam at 200oC and the plant should produce 5kW. The boiler pressure should not exceed 25bar and the isentropic efficiency of the turbine can be assumed as 90%. Considering the above design constrains find the turbine inlet temperature and pressure. (hint: A good design should deliver dry saturated steam out from the turbine) Write...
An open cycle power plant is to be designed such that the turbine output is directly...
An open cycle power plant is to be designed such that the turbine output is directly used for industrial process heating. The industrial process required 5kg/s steam at 200oC and the plant should produce 5kW. The boiler pressure should not exceed 25bar and the isentropic efficiency of the turbine can be assumed as 90%. Considering the above design constrains find the turbine inlet temperature and pressure. (hint: A good design should deliver dry saturated steam out from the turbine) Write...
A steam power plant is intended to be used for heating as well as power generation....
A steam power plant is intended to be used for heating as well as power generation. The net power required from this installation is 5 MW and the heating power is 12 MW. While the steam produced at 4 MPa, 440 degrees Celsius in the boiler expands in the isentropic turbine, the steam to be used in heating is drawn from the turbine at 140 kPa and it is condensed in the heating installation and mixed with water from the...
You are to analyze a simple steam power plant. At the boiler exit, the pressure is...
You are to analyze a simple steam power plant. At the boiler exit, the pressure is 8 MPa and the temperature is 1000 °C. The turbine isentropic efficiency is 85%. The condenser pressure is 15 kPa and the water is a saturated liquid at the condenser exit. The pump isentropic efficiency is 80%. Answer the following: a) What is the quality at the exit in %, if the turbine is assumed isentropic? b) What is the work output of the...
Consider a steam power plant which operates on the simple ideal Rankine cycle (shown in the...
Consider a steam power plant which operates on the simple ideal
Rankine cycle (shown in the next page), where the boiler pressure
is 3 MPa and the condenser saturation temperature is 50°C. The
temperature at the exit of the boiler is 500°C. Water leaves the
condenser as a saturated liquid. The mass flow rate through each
component is 15 kg/s. Calculate:
1. The power output of the steam power plant
2. The thermal efficiency of the steam power plant
Now,...
In Geothermal-steam power cycle, the source of heat is the hot water from well. The heat...
In Geothermal-steam power cycle, the source of heat is the hot
water from well. The heat exchanger receive hot water at Tg1= 105
oC and the water leaves at 40 oC as shown in Figure 3. Steam exits
the boiler at 40 bar, 300 oC, and it exits the turbine at 1 bar.
Saturated liquid water exits the condenser at 1 bar. The plant
operate to generate 20 MW electric power with generator efficiency
of 0.95. The isentropic efficiency of...
4. Steam at 30 bar and 500°C enters a pass-out turbine at a rate of 18000...
4. Steam at 30 bar and 500°C enters a pass-out turbine at a rate of 18000 kg h! The bulk of this steam is expanded isentropically to a condenser pressure of 0.03 bar, but 32% is bled from the turbine at a pressure of 3 bar for process heating. If the condensate from the process heater is directly pumped back to the boiler, find: (a) the power output from the turbine (b) the rate of process heating (c) the efficiency...
Combined Gas and Steam Power Plant The highest temperature at the inlet of a gas turbine...
Combined Gas and Steam Power Plant The highest temperature at the inlet of a gas turbine can be 1600oC. The temperature of the ambient air is 27oC. Determine the maximum pressure ratio and the associated efficiency. Determine the conditions (temperatures and pressure) at the various points of the cycle. What’s the maximum temperature of the exhaust gases? Determine the amount of natural gas required for a 500 MW plant. Determine the associated emissions. What’s the total amount of exhaust gas?...
1. An industrial plant needs 20,000 lbm of saturated steam at 280°F per hour for heating...
1. An industrial plant needs 20,000 lbm of saturated steam at 280°F per hour for heating purposes and ten MW of electrical power. A small turbine system is to be designed to handle both of these needs. Steam is supplied to a turbine at 400 psia pressure from a boiler and expanded until 280°F saturated steam is obtained whereupon the steam needed for heating is extracted. The rest of the steam is expanded in a second turbine to a condenser...
SP-25 Consider a regenerative steam power plant with one open feedwater heater and one closed fee...
SP-25 Consider a regenerative steam power plant with one open feedwater heater and one closed feedwater heater. Superheated steam enters the turbine with a mass flow rate of 120 kg/s at 16 MPa and 560°C (State 1). Some fraction of the steam is extracted at 40 bar (State 2) and is supplied to the closed feedwater heater. The remaining steam expands to a pressure of 3 bar (State 3), another fraction is extracted at this pressure, and is supplied to...
Consider a steam power plant which operates on the simple ideal
Rankine cycle (shown in the next page), where the boiler pressure
is 3 MPa and the condenser saturation temperature is 50°C. The
temperature at the exit of the boiler is 500°C. Water leaves the
condenser as a saturated liquid. The mass flow rate through each
component is 15 kg/s. Calculate:
1. The power output of the steam power plant
2. The thermal efficiency of the steam power plant
Now,...
In Geothermal-steam power cycle, the source of heat is the hot
water from well. The heat exchanger receive hot water at Tg1= 105
oC and the water leaves at 40 oC as shown in Figure 3. Steam exits
the boiler at 40 bar, 300 oC, and it exits the turbine at 1 bar.
Saturated liquid water exits the condenser at 1 bar. The plant
operate to generate 20 MW electric power with generator efficiency
of 0.95. The isentropic efficiency of...
4. Steam at 30 bar and 500°C enters a pass-out turbine at a rate of 18000 kg h! The bulk of this steam is expanded isentropically to a condenser pressure of 0.03 bar, but 32% is bled from the turbine at a pressure of 3 bar for process heating. If the condensate from the process heater is directly pumped back to the boiler, find: (a) the power output from the turbine (b) the rate of process heating (c) the efficiency...
1. An industrial plant needs 20,000 lbm of saturated steam at 280°F per hour for heating purposes and ten MW of electrical power. A small turbine system is to be designed to handle both of these needs. Steam is supplied to a turbine at 400 psia pressure from a boiler and expanded until 280°F saturated steam is obtained whereupon the steam needed for heating is extracted. The rest of the steam is expanded in a second turbine to a condenser...
SP-25 Consider a regenerative steam power plant with one open feedwater heater and one closed feedwater heater. Superheated steam enters the turbine with a mass flow rate of 120 kg/s at 16 MPa and 560°C (State 1). Some fraction of the steam is extracted at 40 bar (State 2) and is supplied to the closed feedwater heater. The remaining steam expands to a pressure of 3 bar (State 3), another fraction is extracted at this pressure, and is supplied to...
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