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4. Water is the working fluid in an ideal Rankine cycle. Saturated vapor enters the turbine at 15 MPa. The condenser pressure is 5

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4. Water is the working fluid in an ideal Rankine cycle. Saturated vapor enters the turbine at 15 MPa. The condenser pressure is 5 kPa. Determine (a) the net work per unit mass of steam flowing, in kJ/kg, (b) the heat transfer to the steam passing through the boiler, in kJ per kg of steam flowing, (c) the thermal efficiency, (d) the heat transfer to cooling water passing through the condenser, in kJ per kg of steam condensed. Ans: (a) 979 kJ/kg, (b) 2458 kJ/kg, (c) 40%, (d) 1479 kJ/kg

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