Answered: In 1903, Aegidius Elling of Norway…

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter22: Heat Engines, Entropy, And The Second Law Of Thermodynamics

Section: Chapter Questions

Problem 22.6P: A multicylinder gasoline engine in an airplane, operating at 2.50 103 rev/min, takes in energy 7.89...

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Question

In 1903, Aegidius Elling of Norway designed and
built an 11-hp gas turbine that used steam injection between
the combustion chamber and the turbine to cool the combustion
gases to a safe temperature for the materials available at the
time. Currently there are several gas-turbine power plants that
use steam injection to augment power and improve thermal
efficiency. For example, the thermal efficiency of the General
Electric LM5000 gas turbine is reported to increase from 35.8
percent in simple-cycle operation to 43 percent when steam
injection is used. Explain why steam injection increases the
power output and the efficiency of gas turbines. Also, explain
how you would obtain the steam.

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