Problem 10.1 A simple Rankine cycle operates with a low pressure of 50 kPa and a high pressure of 5 MPa. Assume the pump is ideal, and the turbine has an isentropic efficiency of 92% a) What is the thermodynamic efficiency of this cycle? b) What is the mass flow rate of the working fluid needed to have a power output of 5MW? Water pump Combustion products (to stack) Cooling water in (Solution: th = 27%, m = 7.58 kg/s) Boiler Condenser Fuel and air in Steam turbine Cooling water out Electrical generator 2

Problem 10.1 A simple Rankine cycle operates with a low pressure of 50 kPa and a high pressure of 5 MPa. Assume the pump is ideal, and the turbine has an isentropic efficiency of 92% a) What is the thermodynamic efficiency of this cycle? b) What is the mass flow rate of the working fluid needed to have a power output of 5MW? Water pump Combustion products (to stack) Cooling water in (Solution: th = 27%, m = 7.58 kg/s) Boiler Condenser Fuel and air in Steam turbine Cooling water out Electrical generator 2

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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Question

please use thermodynamic principles

Problem 10.1
A simple Rankine cycle operates with a low pressure of 50 kPa and a high pressure of 5 MPa. Assume the
pump is ideal, and the turbine has an isentropic efficiency of 92%
a) What is the thermodynamic efficiency of this cycle?
b) What is the mass flow rate of the working fluid needed to have a power output of 5MW?
Water
pump
Combustion
products
(to stack)
Cooling
water in
(Solution: 1th 27%, m= 7.58 kg/s)
Boiler
Condenser
Fuel and
air in
Steam
turbine
Cooling
water out
Electrical
generator
~

Science that deals with the amount of energy transferred from one equilibrium state to another equilibrium state.

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