Steam superheaters are widely used in steam
generators and heat-recovery steam generators (HRSGs). Their
purpose is to raise steam temperature from saturation
conditions to the desired final temperature, which can be as
high as 1,000°F in some cases. When used in steam turbines,
superheated steam decreases steam heat rate of the turbine
and thus improves the turbine and overall plant power output
and efficiency. Also, steam conditions at the steam turbine
exit will have little or no moisture, depending on the
pressure ratio; moisture in the last few stages of a steam
turbine can damage the turbine blades. This article
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