Liquid Hydrogen

[HydroScope]

I would like to calculate how much energy is required theorectically to liquify hydrogen, My thermodynamics book has a table "ideal gas properties" which includes diatomic hydrogen, using enthalpy vs temp change from 300K to 20K, I came up with 3929 KJ/ Kg. that doesn't not include latent heat of vapourisation which I got from another source 445.7 KJ/Kg. I don't think this is right, can anyone help? can I get necessary tables, equations, of the net?

 

[IRstuff]

There seems to be plenty of resources when searching for "hydrogen heat vaporization"

TTFN

 

[NTCIINC]

You are not too far off! At atmospheric pressure I calculated an enthalpy difference of 4459.2 KJ/Kg.

Good job!