Calculate Heat Transfer for Cooling Saturated Water in a Closed Tank

[Xkaliber]

Homework Statement

Saturated liquid water contained in a closed, rigid tank is cooled to a final state where the temperature is 50 degrees C and the masses of saturated vapor and liquid present are 0.03 and 1999.97 kg, respectively. Determine the heat transfer for the process, in kJ.

Homework Equations

u = (1-x)u_f + x(u_g)

The Attempt at a Solution

Well, I am able to find the values for all my variables except for the specific internal energy of the initial saturated liquid water. The value can be found on a saturation table but to do so, I need to know either the pressure or the temperature of the water, which is not given in the problem. Any hints on obtaining one these values?

Thanks

 

[chemisttree]

Saturated liquid water contained in a closed, rigid tank is cooled to a final state where the temperature is 50 degrees C and ...

...The value can be found on a saturation table but to do so, I need to know either the pressure or the temperature of the water, which is not given in the problem.

Will this help?

 

[Xkaliber]

lol, I wish it were that easy, but I actually need the pressure or the temp of the saturated liquid before cooling. I am sure the 50 degrees C value is used in some way, direct or indirect, to find one of the numbers I need, but I am not sure how to calculate it.