Typically, how much coal is consumed per kWh generated in a standard thermal power plant__________________?
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Answer: C. 0.6 to 0.8 kg
Explanation
Standard coal-fired thermal power plants typically consume around zero point six to zero point eight kilograms of coal per kilowatt-hour. Thermodynamic losses in boilers, steam turbines, and electrical generators dictate this specific fuel consumption rate range. Lower specific coal consumption values indicate higher overall plant thermal efficiency and better thermodynamic cycle design. Rankine thermodynamic cycles govern electricity generation in large coal-fired power stations utilizing high-pressure steam turbines. The calorific heating value of standard steam coal directly determines the mass required to generate a specific electrical output. Modern supercritical and ultra-supercritical power plants achieve improved efficiency, thereby reducing coal consumption per kilowatt-hour.
Consuming zero point one to zero point two kilograms of coal per kilowatt-hour violates thermodynamic efficiency limits for steam plants. Values between one point zero and two kilograms per kilowatt-hour represent obsolete or extremely inefficient thermal power generation. Lower consumption estimates fail to account for unavoidable thermodynamic losses inherent in standard Rankine cycle power generation.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
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