Calculation of extra steam gain after de-superheating of superheated steam
1.Quantity of Superheated steam=170000 kgs/hr
2.Temperature of Superheated steam=170 degree centigrade
3.Specific heat of superheated steam=0.25
4.Temperature required after de-superheated steam=120 degree centigrade
5.Pressure of de-superheated steam=1.2kgs/cm2
6. Specific enthalpy of 1.2kgs/cm2 de superheated steam=648 kcal/kg
7. Latent heat of de-superheated= (648-100) =548 kcal/kg
8. Temperature of water used for de-superheating=100 degree centigrade
9. Specific enthalpy of 100 degree centigrade water=100 kcal/kg
Quantity of extra steam generated from de-superheating of superheated steam
Q= m x s x delta T / (Specific enthalpy of 1.2kgs/cm2 de superheated steam – Specific enthalpy of 100 degree centigrade water)
= 170000 X .25 X (170-120)/(648-100)
=3878 kgs/hr =3.878 tons per hr.
