Boiler Operation Engineer Interview Question - 27 Q. What is the effIciency of power plant ? Ans . Efficiency of the power plant is calculated based on heat input and out put. Power plant efficiency = Heat out put X 100/Heat In put. In power plant, generally heat input is fuel, make up water and condensate return water from process. Heat out put is power generation. The formula for efficiency calculation is different for different plants. Efficiency of the power plant is given as. Efficiency = 860 X 100/ Heat rate 1. For thermal power plants efficiency is calculated as; Efficiency = 860 X Power generation / Heat input. Efficiency = 860 X PG X 100/ (Fuel consumption X Fuel GCV). 2. For co generation plants heat rate is calculated as; Efficiency = 860 X Power generation X 100/ (Fuel consumption X GCV + Make up water X Make up water enthalpy + Return condensate water X Enthalpy - Process steam flow X Enthalpy). 3. Co generation plant Efficiency is also calculated as; Efficiency =
Power plant guruji site basically includes the detailed study of power plant operation and maintenance, its related all calculations and thumb rules. It also involves detailed troubleshooting guides for operation and maintenance of power plant processes and equipments.