Question
A plant uses a basic Rankine power cycle, but for safety reasons, the maximum allowable temperature in the old boiler is 600C. The steam generated
A plant uses a basic Rankine power cycle, but for safety reasons, the maximum allowable temperature in the old boiler is 600C. The steam generated is passed through a turbine with 80% efficiency and exits at 0.6 bar and 25C of superheat. If the heat from the burning wood is transferred to the boiler with 80% efficiency and the pump operates with 90% efficiency, at what rate must wood be burned in the cycle to produce 20 MW of power? (20 MJ/kg wood) What is the thermodynamic efficiency of the entire cycle? If we have cooling water for the condenser available at 5C, and the maximum outlet temperature for the water is 25C, how much cooling water must be supplied for the process? Please sketch this process on the steam T-S chart.
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