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Ideal steam Rankine cycle with superheat operates between 50 kPa and 7 MPa with a maximum temperature of 900 K. The following properties were found when the cycle included an ideal pump and turbine.

Ideal steam Rankine cycle with superheat operates between 50 kPa and 7 MPa with a maximum temperature of 900 K. The following properties were found when the cycle included an ideal pump and turbine.

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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An ideal steam Rankine cycle with superheat operates between 50 kPa and 7 MPa with a maximum temperature of 900 K. The following properties were found when the cycle included an ideal pump and turbine. State P (kPa) T(K) h (kJ/kg) S (kJ/kg*K) 50 Sat liq 340,54 1.0912 2s 7000 354.86 347.69 1.0912 3 7000 900 3714.3 7.1628 4s 50 354.47 2492.7 7.1628 Combustion products (to stack) Fuel and air in Boiler Water Steam turbine pump Electrical generator Condenser Cooling water in Cooling water out Find the thermal efficiency of this ideal Rankine cycle with superheat. a. b. Find the power output from an actual turbine with isentropic efficiency of 90% and flow rate of 0.5 kg/s operating with the same inflow conditions and outflow pressure. Determine the temperature and enthalpy at the outflow of the actual turbine. (The steam tables needed are found in the equation C. sheet.)
Transcribed Image Text:An ideal steam Rankine cycle with superheat operates between 50 kPa and 7 MPa with a maximum temperature of 900 K. The following properties were found when the cycle included an ideal pump and turbine. State P (kPa) T(K) h (kJ/kg) S (kJ/kg*K) 50 Sat liq 340,54 1.0912 2s 7000 354.86 347.69 1.0912 3 7000 900 3714.3 7.1628 4s 50 354.47 2492.7 7.1628 Combustion products (to stack) Fuel and air in Boiler Water Steam turbine pump Electrical generator Condenser Cooling water in Cooling water out Find the thermal efficiency of this ideal Rankine cycle with superheat. a. b. Find the power output from an actual turbine with isentropic efficiency of 90% and flow rate of 0.5 kg/s operating with the same inflow conditions and outflow pressure. Determine the temperature and enthalpy at the outflow of the actual turbine. (The steam tables needed are found in the equation C. sheet.)
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