The exhaust gases of a gas turbine, are used in a well insulated regenerator (heat exchanger) to raise steam at 2 bar, which is subsequently fed to a steam turbine in order to produce additional power. The air enters the regenerator at 758 K and exits at 350 K. The mass flow rate of the air is 3.2 kg/s. Water at 45°C and 2 bar enters the regenerator and exits as saturated steam at the same pressure. Determine: a) The mass flow rate of the water. b) The rate of entropy production in the regenerator in kJ/s.

The exhaust gases of a gas turbine, are used in a well insulated regenerator (heat exchanger) to raise steam at 2 bar, which is subsequently fed to a steam turbine in order to produce additional power. The air enters the regenerator at 758 K and exits at 350 K. The mass flow rate of the air is 3.2 kg/s. Water at 45°C and 2 bar enters the regenerator and exits as saturated steam at the same pressure. Determine: a) The mass flow rate of the water. b) The rate of entropy production in the regenerator in kJ/s.

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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Concept explainers

Heat Exchangers

Heat exchangers are the types of equipment that are primarily employed to transfer the thermal energy from one fluid to another, provided that one of the fluids should be at a higher thermal energy content than the other fluid.

Heat Exchanger

The heat exchanger is a combination of two words ''Heat'' and ''Exchanger''. It is a mechanical device that is used to exchange heat energy between two fluids.

Question

11. The exhaust gases of a gas turbine, are used in a well insulated regenerator
(heat exchanger) to raise steam at 2 bar, which is subsequently fed to a steam
turbine in order to produce additional power. The air enters the regenerator at
758 K and exits at 350 K. The mass flow rate of the air is 3.2 kg/s. Water at
45°C and 2 bar enters the regenerator and exits as saturated steam at the same
pressure. Determine:
a) The mass flow rate of the water.
b) The rate of entropy production in the regenerator in kJ/s.

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