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Solved: Water is the working fluid in an ideal Rankine
Chapter 8, Problem 8.7(choose chapter or problem)
Water is the working fluid in an ideal Rankine cycle. Saturated vapor enters the turbine at 16 MPa, and the condenser pressure is 8 kPa. The mass flow rate of steam entering the turbine is 120 kg/s. Determine
(a) the net power developed, in kW.
(b) the rate of heat transfer to the steam passing through the boiler, in kW.
(c) the thermal efficiency.
(d) the mass flow rate of condenser cooling water, in kg/s, if the cooling water undergoes a temperature increase of 18\(^{\circ}\)C with negligible pressure change in passing through the condenser.
Questions & Answers
QUESTION:
Water is the working fluid in an ideal Rankine cycle. Saturated vapor enters the turbine at 16 MPa, and the condenser pressure is 8 kPa. The mass flow rate of steam entering the turbine is 120 kg/s. Determine
(a) the net power developed, in kW.
(b) the rate of heat transfer to the steam passing through the boiler, in kW.
(c) the thermal efficiency.
(d) the mass flow rate of condenser cooling water, in kg/s, if the cooling water undergoes a temperature increase of 18\(^{\circ}\)C with negligible pressure change in passing through the condenser.
ANSWER:Step 1 of 7
Given data:
In order to understand this Rankine cycle and solve this problem we have to sketch the T-s diagram and use tables of thermodynamic properties. The T-s diagram should look like:
