
Originally Posted by
SteaminDemon
Some use Main steam for soot blowers (reduced down to 300 and 150) and for other systems as well, and some use auxiliary steam. However there are the Desuperheaters that take 1200 LB main steam and reduce the temperature (not pressure) of the Steam to utilize it for auxiliary equipment. On the D-types the Navy used the utilization of the desuperheater serves two purposes. One, it enables the superheater outlet temperature to remain fairly constant throughout the entire load range and two saves money (don't have to worry about building the turbine to withstand 1100 Deg).