Coolpack is a free program for refrigeration simulation including h-log p ant T-s diagrams for all (mostly) refrigerants. You my download the program-package from The technical University in Copenhagen http://www.et.dtu.dk/coolpack/Download/Index.html.
Good luck
Magne Vaage, Assistant...
I am professor at a Norwegian university and teaching (renewable) energy related subjects. This autumn I am starting teaching a new subject, Local Energy Planning. So I am very interested participating your proposed forum !
T-s and p-h chart for refrigerants:
Two Professors at Danish Technical University in Copenhagen have developed a nice computerprogram you can download free. Search for Coolpack!
Good loock