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why does cooling chamber used in a gas turbine? why can't we
use exhaust hot air in the compressor?

Answer Posted / azhar iqbal

cooling chamber is used in the turbine to control it's
exhaust temperature and in this way to increase it's
efficiency by 2-3% almost.
Also it is used to protect the damaging of the turbine
blades as high temperature currents flow upon them after
combustion.

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