Superheated steam at 18 MPa and 560°C enters the turbine of a power plant which operates on actual vapor power cycle. The pressure at the exit of the turbine is 6 kPa, and liquid leaves the condenser at 4.5 bar and 26.0°C. The pressure is increased to 18.2 MPa across the pump. The turbine and pump have isentropic efficiencies of 82% and 77%, respectively. For the cycle, determine (a) the net work per unit mass of steam flow (in kJ/kg), (b) the heat transfer to steam passing through the boiler (in kJ per kg of steam flowing), (c) the thermal efficiency (in %) and the (d) heat transfer to cooling water passing the condenser (in kJ per kg of steam condensed).

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Superheated steam at 18 MPa and 560°C enters the turbine of a power plant which operates on actual vapor power cycle. The pressure at the exit of the turbine is 6 kPa, and liquid leaves the condenser at 4.5 bar and 26.0°C. The pressure is increased to 18.2 MPa across the pump. The turbine and pump have isentropic efficiencies of 82% and 77%, respectively. For the cycle, determine (a) the net work per unit mass of steam flow (in kJ/kg), (b) the heat transfer to steam passing through the boiler (in kJ per kg of steam flowing), (c) the thermal efficiency (in %) and the (d) heat transfer to cooling water passing the condenser (in kJ per kg of steam condensed).

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