Ciclo Rankine Ideal com Água: Análise de Desempenho e Eficiência Térmica

1016 A simple ideal Rankine cycle with water as the working fluid is considered The work output from the turbine the heat addition in the boiler and the thermal efficiency of the cycle are to be determined Assumptions 1 Steady operating conditions exist 2 Kinetic and potential energy changes are negligible Analysis From the steam tables Tables A4 A5 and A6 P1 Psat 40C 7385 kPa P2 Psat 300C 8588 kPa h1 hf 40C 16753 kJkg v1 Vf g 40C 0001008 m3kg wpin v1 P2 P1 0001008 m3kg8588 7385kPa 1 kJ1 kPam3 865 kJkg h2 h1 wpin 16753 865 17618 kJkg T3 300C h3 27496 kJkg x3 1 s3 57059 kJkg K T4 40C s4 s3 x4 5457 76832 5705905724 06681 h4 hf x4hfg 16753 0668124060 17751 kJkg Thus WT out h3 h4 27496 17751 9745 kJkg qin h3 h2 27496 17618 25734 kJkg qout h4 h1 17751 16753 16076 kJkg The thermal efficiency of the cycle is ηth 1 qoutqin 1 1607625734 0375