In a gas turbine power plant, the air is preheated by the exhaust gases in a heat exchanger called a regenerator. Air enters at 1 MPa, 550 K, and the mass flow rate of 900 kg / min. Heat is transferred to the air with a rate of 3000 kJ / s. While the exhaust gas enters the regenerator at 150 kPa, 800 K and leaves at 130 kPa and 600 K. Assuming the air and the exhaust gases are ignoring kinetic and potential energy effects, examine a) the air temperature at the outlet, b) the exhaust gas flow rate.

In a gas turbine power plant, the air is preheated by the exhaust gases in a heat exchanger called a regenerator. Air enters at 1 MPa, 550 K, and the mass flow rate of 900 kg / min. Heat is transferred to the air with a rate of 3000 kJ / s. While the exhaust gas enters the regenerator at 150 kPa, 800 K and leaves at 130 kPa and 600 K. Assuming the air and the exhaust gases are ignoring kinetic and potential energy effects, examine a) the air temperature at the outlet, b) the exhaust gas flow rate.

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

In a gas turbine power plant, the air is preheated by the exhaust gases in a heat exchanger called
a regenerator. Air enters at 1 MPa, 550 K, and the mass flow rate of 900 kg / min. Heat is
transferred to the air with a rate of 3000 kJ / s. While the exhaust gas enters the regenerator at
150 kPa, 800 K and leaves at 130 kPa and 600 K. Assuming the air and the exhaust gases are
ignoring kinetic and potential energy effects, examine
a) the air temperature at the outlet,
b) the exhaust gas flow rate.
[Assuming that air and exhaust gas has the same Cp = 1.005 kJ/kg.K]

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