Rankine cycle efficiency of a good Steam Power Plant may be in the range of?

Related MCQs

• A steam power plant working on Rankine cycle produces steam in the boiler at a rate of 100 kg/s with enthalpy of 3280 kJ/kg from water whose total heat content is 420 kJ/kg. The plant has Rankine efficiency of 24.65 while pump requires 5 kJ/kg of work. The turbine generates power of
• Rankine cycle efficiency of a good steam power plant may be in the range of
• Considerfollowing options for a simple Rankine cycle i) increasing pressure at exist of turbine ii) increasing average temperature of heat addition iii) decreasing pressure at exit of turbine iv) superheating of steam v) decreasing pressure during superheating. Which combination of above will increase Rankine efficiency?
• Examine follwing two statements & choosethe correct relationship i) for a steam power plant Rankine cycle is preferred over Carnot cycle ii) a pump which will handle the mixture of vapour & liquid is difficult to construct
• Consider the following statements regarding superheating in Rankine Cycles 1. It reduces the specific steam consumption 2. It increases the dryness fraction of steam at the exhaust for the same value of condenser pressure 3. It reduces the cycle efficiency Of the these statements
• In a reheat Rankine cycle steam with enthalpy of 3300 kJ/kg is expanded in h.p turbine to a state where enthalpy is 2650 kJ/kg. The steam is further expnaded from a state where enthalpy is 2950 kJ/kg to enthalpy of 2525 kJ/kg & latent heat of 2201 kJ.kg. The work of the cycle & amount of reheat respectively are
• In a simple Rankine cycle steam was expanded from 100 bar & 380°C to 1 bar 0.8 dry state. The pump motor consumes 10 kJ/kg of energy. The efficiency of cycle is
• Rankine efficiency of a Steam Power Plant
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