2. A water-steam Rankine Cycle with rhwater;ka = 1,06 kg s" (a) A two-stage turbine system, with reheat between the stag

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2 A Water Steam Rankine Cycle With Rhwater Ka 1 06 Kg S A A Two Stage Turbine System With Reheat Between The Stag 1 (61.08 KiB) Viewed 43 times

2. A water-steam Rankine Cycle with rhwater;ka = 1,06 kg s" (a) A two-stage turbine system, with reheat between the stages. The first turbine inlet is at 560°C and 160 bar. Reheat occurs at 40.0 bar up to 520°C. The second-stage turbine outlet is 2.00 bar. (b) Cooling at constant pressure in a condenser via heat exchange with ambient air to saturated liquid. The air used in condenser cooling must not exceed 400K when it is released from the power plant. (c) A pump from the low-side pressure to the high-side pressure. (d) Heating in a boiler at constant pressure, using the waste heat from the Brayton Cycle in a first stage and natural gas combustion in a second stage to reach the turbine inlet temperatures. Turbine reheat occurs in the second stage All turbines are 76% isentropically efficient. All turbines are used to spin electrical generators that are 95% efficient 95% of work done on the generator is converted to electrical power. For the Brayton cycle, air-standard analysis may be used (not cold-air-standardl). Compressors and pumps have isentropic efficiencies of 80%. Combustion is 45% efficient - that is, 45% of the fuel's heating value is delivered into the working fluid. The heat of combustion of natural gas is 51.0 Mj kg?