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A 100 MW steam station uses coal of calorific value 6400 kcal/kg. Overall efficiency of the station is 25% and electrical efficiency is 92%. The coal consumption in kg per hour when the station is delivering its full rated output will be:?
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A 100 MW steam station uses coal of calorific value 6400 kcal/kg. Over...
Calculation of coal consumption in a 100 MW steam station
Given:
Power output of the steam station (P) = 100 MW
Calorific value of coal (CV) = 6400 kcal/kg
Overall efficiency of the station (ηoverall) = 25%
Electrical efficiency of the station (ηelectrical) = 92%
Calculation:
The overall efficiency of the steam station is defined as the ratio of the useful energy output to the energy input. Therefore, the energy input to the station can be calculated as:
Energy input = Energy output / ηoverall
Energy output = Power output × time
Time = 1 hour (since we need to calculate coal consumption in kg per hour)
Therefore, Energy output = Power output × time = 100 MW × 1 hour = 100 MWh
Energy input = Energy output / ηoverall = (100 MWh) / 0.25 = 400 MWh
The electrical efficiency of the steam station is defined as the ratio of the electrical energy output to the energy input. Therefore, the electrical energy output of the station can be calculated as:
Electrical energy output = Power output × time × ηelectrical
Electrical energy output = 100 MW × 1 hour × 0.92 = 92 MWh
The energy input to the station is 400 MWh, and the calorific value of coal is 6400 kcal/kg. Therefore, the coal consumption in kg per hour can be calculated as:
Coal consumption (kg/h) = Energy input / (CV × efficiency)
Efficiency = (Electrical energy output / Energy input) = 92 MWh / 400 MWh = 0.23
Coal consumption (kg/h) = 400 MWh / (6400 kcal/kg × 0.23) = 30303.03 kg/h
Answer:
The coal consumption in kg per hour when the steam station is delivering its full rated output will be 30303.03 kg/h.
Given:
Power output of the steam station (P) = 100 MW
Calorific value of coal (CV) = 6400 kcal/kg
Overall efficiency of the station (ηoverall) = 25%
Electrical efficiency of the station (ηelectrical) = 92%
Calculation:
The overall efficiency of the steam station is defined as the ratio of the useful energy output to the energy input. Therefore, the energy input to the station can be calculated as:
Energy input = Energy output / ηoverall
Energy output = Power output × time
Time = 1 hour (since we need to calculate coal consumption in kg per hour)
Therefore, Energy output = Power output × time = 100 MW × 1 hour = 100 MWh
Energy input = Energy output / ηoverall = (100 MWh) / 0.25 = 400 MWh
The electrical efficiency of the steam station is defined as the ratio of the electrical energy output to the energy input. Therefore, the electrical energy output of the station can be calculated as:
Electrical energy output = Power output × time × ηelectrical
Electrical energy output = 100 MW × 1 hour × 0.92 = 92 MWh
The energy input to the station is 400 MWh, and the calorific value of coal is 6400 kcal/kg. Therefore, the coal consumption in kg per hour can be calculated as:
Coal consumption (kg/h) = Energy input / (CV × efficiency)
Efficiency = (Electrical energy output / Energy input) = 92 MWh / 400 MWh = 0.23
Coal consumption (kg/h) = 400 MWh / (6400 kcal/kg × 0.23) = 30303.03 kg/h
Answer:
The coal consumption in kg per hour when the steam station is delivering its full rated output will be 30303.03 kg/h.
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A 100 MW steam station uses coal of calorific value 6400 kcal/kg. Overall efficiency of the station is 25% and electrical efficiency is 92%. The coal consumption in kg per hour when the station is delivering its full rated output will be:?
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A 100 MW steam station uses coal of calorific value 6400 kcal/kg. Overall efficiency of the station is 25% and electrical efficiency is 92%. The coal consumption in kg per hour when the station is delivering its full rated output will be:? for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about A 100 MW steam station uses coal of calorific value 6400 kcal/kg. Overall efficiency of the station is 25% and electrical efficiency is 92%. The coal consumption in kg per hour when the station is delivering its full rated output will be:? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A 100 MW steam station uses coal of calorific value 6400 kcal/kg. Overall efficiency of the station is 25% and electrical efficiency is 92%. The coal consumption in kg per hour when the station is delivering its full rated output will be:?.
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