A natural gas-fired steam power plant consumes 360 kg/min of natural gas. If the heat losses to the surrounding air from the steam as it passes through pipes and other components are estimated to be about 100 GJ/h . The heating value of the natural gas is 45,000 kJ/kg. Part 1: 1) Determine the rate of the heat supplied by the fuel to the steam plant. 2) Determine the rate of waste heat rejection by the seam plant. 3) Determine the net power delivered by the steam power plant to the generator. 4) Calculate the efficiency of the steam power plant.
A natural gas-fired steam power plant consumes 360 kg/min of natural gas. If the heat losses to the surrounding air from the steam as it passes through pipes and other components are estimated to be about 100 GJ/h . The heating value of the natural gas is 45,000 kJ/kg.
Part 1:
1) Determine the rate of the heat supplied by the fuel to the steam plant.
2) Determine the rate of waste heat rejection by the seam plant.
3) Determine the net power delivered by the steam power plant to the generator.
4) Calculate the efficiency of the steam power plant.
Part two :
If the steam power plant is connected to a generator that is with 95% efficiency.
1) Determine the output energy of the generator.
2) Calculate the total efficiency of the combined turbine and generator system.
3) Critically compare how changes in the thermal efficiency of a heat transfer process can affect its performance
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