when we are reducing pressure of superheated steam why water spray applied ?

Question

when superheated steam (ex.102 bar temp, 510 centgrade,) pressure reduced to 13 bar , water spray is applied for reduce it temprature, why it is required ? pl, Explain me.

Answer 1

if I understand your question correctly... the water acts as a heat sink. temp is the average kinetic energy and when you introduce water in to a system it will take some of the kinetic energy which lowers the temp faster and helps reduce the pressure.

Answer 2

It called 'A De-superheater' where the pressure reduction and water injection is generally used in excess steam and spill over steam systems.
As the water is sprayed into the steam system, it is vaporised thereby removing Latent and Sensible heat from the superheated steam and causing a temperature decrease.
This decreases the energy content of the steam. Generally, the purpose of steam conditioning is to produce steam that is desuperheated for its use in a process that requires steam of a particular pressure and/or temperature.
(The pressure and temperature will be controlled at the level required by the process using it).

Answer 3

The only reason that I can think of is that the processes that require and use the 13 bar steam, do not require so much superheat, so if water is sprayed into supeheated steam, they would get much more steam on a pound or kilo basis, to use at the lower pressure and temperature.