- #1
MotoPayton
- 96
- 0
In the back of my thermodynamics book it has large quantities of thermodynamics properties listed for water--ie temperature, pressure, specific volume, internal energy, enthalpy, and enthalpy.
I would like to know how these tables are built and the methods used to ascertain the data in general, not necessarily the specific method for water.
From reading wikipedia, I know that internal energy is zero at zero Kelvin and then it rises with increasing temperature where its value is representative of the sum of kinetic and potential energies of the system. So If I wanted to find the internal energies for water how would I do it? This equation below seems reasonable except how would I find Cv(T) when calculating the integral. Also obtaining zero Kelvin is "impossible" or not easy to do so these values must have been determined some other way. Maybe reaching close to zero and approximating the data at lower temps.. Really curious on this one. I feel like I should understand this for a more complete understanding of thermo.
https://www.google.com/search?q=int...wikipedia.org%2Fwiki%2FInternal_energy;295;51
I would like to know how these tables are built and the methods used to ascertain the data in general, not necessarily the specific method for water.
From reading wikipedia, I know that internal energy is zero at zero Kelvin and then it rises with increasing temperature where its value is representative of the sum of kinetic and potential energies of the system. So If I wanted to find the internal energies for water how would I do it? This equation below seems reasonable except how would I find Cv(T) when calculating the integral. Also obtaining zero Kelvin is "impossible" or not easy to do so these values must have been determined some other way. Maybe reaching close to zero and approximating the data at lower temps.. Really curious on this one. I feel like I should understand this for a more complete understanding of thermo.
https://www.google.com/search?q=int...wikipedia.org%2Fwiki%2FInternal_energy;295;51