Consider a coalfired steam power plant that produces 175 MW of electric power. The power plant o…
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Question “Consider a coalfired steam power plant that produces 175 MW of electric power. The power plant o…”
of electric power. The power plant operates on a simple ideal
Rankine cycle with turbine inlet conditions of 8 MPa and 560°C and
a condenser pressure of 8 kPa. The coal has a heating value (energy
released when the coal is burned) of 29,300 kJ/kg and a CO2
emission value of 0.093 kg CO2/MJ. Assuming that 85% of this energy
is transferred to heat in the boiler and that the electric
generator has an efficiency of 96 percent, determine:
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A coalfired steam power plant produces 175 MW of electric
power. The power plant operates on…A coalfired steam power plant produces 175 MW of electric
power. The power plant operates on a Rankine cycle with turbine
inlet conditions of 7 MPa and 550oC and a condenser pressure of 15
kPa. The turbine efficiency and pump efficiency are both 0.8. The
coal has a heating value (energy released when the fuel is burned)
of 29,300 kJ/kg. Assuming that 85 percent of this energy is
transferred to the steam in the boiler and that the electric
generator…7.4 A coalfired 930MW power plant is operating under the following conditions: Coal carbon content C…
7.4 A coalfired 930MW power plant is operating under the following conditions: Coal carbon content C = 80%, coal ash content A = 6%, and heating value LHV = 30 MJ/kg Cooling water temperature difference Atew = 10.5 K Plant electrical efficiency ne is 0.43 and capacity factor CF is 0.82. Boiler efficiency n = 0.92 ESP efficiency nesp = 99% Calculate (a) the plant fuel rate, (b) the hourly and annual CO, emission rates, (c) the specific CO2 emissions…A Rankine Cycle based steam power plant produces 200 MW of
power. Steam exits the boiler…A Rankine Cycle based steam power plant produces 200 MW of
power. Steam exits the boiler at 3 MPa and 500° C. The turbine exit
is at 40 kPa. Isentropic efficiencies of the turbine and pump are
75% and 70% respectively.
Show the cycle on a Ts diagram
Calculate the mass flow rate of
steam
Determine the heat transfer rates in the boiler and
condenser in MW
Determine the cycle efficiency
Determine the mass flow rate of the condenser
cooling…Consider a steam power plant that operates on the ideal
regenerative Rankine cycle with a closed…
Consider a steam power plant that operates on the ideal
regenerative Rankine cycle with a closed feedwater heater as shown
in the figure. The plant maintains the turbine inlet at 3000 kPa
and 3508C; and operates the condenser at 20 kPa. Steam is extracted
at 1000 kPa to serve the closed feedwater heater, which discharges
into the condenser after being throttled to condenser pressure.
Calculate the work produced by the turbine, the work consumed by
the pump, and the heat…Section B – combined cycles
Overview: a combined gas – steam power cycle in Sweden provides…Section B – combined cycles
Overview: a combined gas – steam power cycle in Sweden provides
electricity and hot
water for heating duties for a small city. The gas turbine drives
an electricity generator
with an efficiency of 97%. A subcritical coal fired boiler is used
as a heat recovery steam
generator, as well as providing additional steam from coal during
the winter months. The
steam turbine drives an electricity generator with an efficiency of
95%. The plant is
located…ethanol is 190 g E a 3) A coalfired power plant is designed to produce 12…
ethanol is 190 g E a 3) A coalfired power plant is designed to produce 12 MW of electricity. (This is a small unit that might be used to power a pulpandpaper mill or other relatively energy intensive factory.) The coal is used to heat steam to a temperature of 560 C. After running through the turbines; the steam has been condensed and the liquid water cooled to 38 °C. (a) Calculate the minimum amount of heat that must be…A typical coalfired power plant burns 290 metric tons of coal
every hour to generate 800…A typical coalfired power plant burns 290 metric tons of coal
every hour to generate 800 MW of electricity. 1 metric ton= 1000
kg. The density of coal is 1500 kg/m3 and its heat of combustion is
28 MJ/kg. Assume that all heat is transferred from the fuel to the
boiler and that all the work done in spinning the turbine is
transformed into electrical energy. Part A)Suppose the coal is
piled up in a 8.0 m × 11 m…A typical large coal fired electric power plant produces 1,200MW
of electricity by burning fuel with…A typical large coal fired electric power plant produces 1,200MW
of electricity by burning fuel with energy content of 3,000 MW.
Three hundred and forty (340) MW are lost as heat up the smokestack
leaving the rest to drive a generator to produce electricity.
However, the thermal efficiency of the turbine is only 45%. That is
45% of the remaining power goes to drive the generator, and 55% is
waste heat that must be removed by cooling water. Assume that…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,…An industry is proposing to construct a new coalfired power
plant that produces 2300 MW
electricity…An industry is proposing to construct a new coalfired power
plant that produces 2300 MW
electricity with efficiency of 39%. Coal has a heating value of
10,750 Btu/lb, and contains a
sulfur content of 2.4%. It is expected that 95% of sulfur will be
converted to SO2. The New
Source Performance Standards (NSPS) limits the SO2 emission rate
from any coalfired
power plants to 1.2 lb/ 106
Btu heat input.
a) Determine coal consumption in lb/ hr
b) Determine SO2…
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