(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

5 kg of a mixture of saturated liquid-vapor water is in a container of fixed volume 2,5 m^{3}. Initially the temperature is 75 ºC and then the water is heated.

a) Find the temperature at which the water is completely vaporized.

b) Draw the temperature-specific volume diagram.

3. The attempt at a solution

a) Is easily solved from the tables and I've found a temperature of 140,7 ºC.

b) Here I am completely at a loss... From what I can understand from the problem, initially the process begins somewhere inside the "dome shaped" region.

The specific volume is constant and equals 0,5 m^{3}/kg, which lies between Vf and Vg for 75ºC. I put a red dot where I think the process begins... is it right?

But now... how can we get to the final state? I think the final state is a saturated vapor state... is it right?

Because specific volume is constant, I put a blue dot where I think the final state is... but how can the temperature change inside the dome shaped region??

Many thanks!

1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

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# Homework Help: T-v diagram at constant volume

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