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23 Nov 2019
A typical coal-fired power plant burns 250 metric tons of coalevery hour to generate 800 MW of electricity. 1 metric ton= 1000kg. The density of coal is 1500 {\rm kg}/{\rm m}^{3} and its heatof combustion is 28 \;\rm MJ/kg. Assume that all heat istransferred from the fuel to the boiler and that all the work donein spinning the turbine is transformed into electricalenergy.
Suppose the coal is piled up in a 8.0 m \times 15 m room. How tallmust the pile be to operate the plant for one day?
What is the power plant's thermal efficiency?
A typical coal-fired power plant burns 250 metric tons of coalevery hour to generate 800 MW of electricity. 1 metric ton= 1000kg. The density of coal is 1500 {\rm kg}/{\rm m}^{3} and its heatof combustion is 28 \;\rm MJ/kg. Assume that all heat istransferred from the fuel to the boiler and that all the work donein spinning the turbine is transformed into electricalenergy.
Suppose the coal is piled up in a 8.0 m \times 15 m room. How tallmust the pile be to operate the plant for one day?
What is the power plant's thermal efficiency?
