Calculate Heat Transfer for Cooling Saturated Water in a Closed Tank

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The discussion revolves around calculating the heat transfer for cooling saturated liquid water in a closed tank, where the final temperature is 50 degrees Celsius and the masses of saturated vapor and liquid are specified. The main challenge is determining the specific internal energy of the initial saturated liquid, which requires knowing either the pressure or temperature of the water before cooling. Participants emphasize the need for saturation tables to find these values but note that the problem lacks sufficient information to obtain them directly. There is a suggestion that the final temperature may indirectly help in finding the necessary initial conditions. The conversation highlights the importance of identifying initial state parameters to proceed with the heat transfer calculation.
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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
 
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Xkaliber said:
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?
 
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.
 
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