Measure of free energy, which equipment are needed

[gee]

Hi everybody,
I'm working on a project aiming to determine what are the differents ways to measure the free energy (gibbs) and the enthalpy of solutions or any bodies.
And I have no idea.
If you know some equipment or some procedure to measure it, I would be very happy.

Thanks.

[Bystander]

You're going to have to be more specific --- you've fenced in about a half mile of library sheves with your inquiry.