Steam Generator Problem: Calculating Heat Input and Fractional Usage of Heat"

[sawhai]

Thank you

Homework Statement

cold water enters a steam generator at 20°C, is vaporized at 165°C, and exits as a superheated vapor at 350°C. The steam generator, operates at constant pressure.
(a) the heat input to the generator (kJ per kg of steam product);
(b) the fraction of the input heat used to
(i) preheat the liquid feed water to the saturation temperature of 165C
(ii)evaporate the water
(iii)superheat the water vapor to its final exit temperature

Homework Equations

Ein=Eout

The Attempt at a Solution

I am not sure where to start. I was trying to set up the energy balance equation but since there is no pressure given I don't know how it looks like.

 

[Redbelly98]

The water becomes vapor at 165 C. At what pressure does that happen?

 

[sawhai]

The equivalent pressure is 700kpa

 

[Redbelly98]

Sorry about the delay getting back to you.

Yes, the processes happen at 700 kPa. So can you use the water data tables to get the heat inputs for the 3 stages?

p.s. I'm moving this thread to the Engineering homework area, it seems like a question you would get in an engineering class rather than introductory physics.