Hey Martinm,
All the testing seems very sound. Sorry I have been too busy to add more data from my own testing to back you up/help you out. Keep up the great work. I do not know if you have much of a background in the sciences but you should look into some of the better texts available on heat flow, hydrodynamics and thermodynamics...might generate even more crazy ideas for you to work with.

Cheers to your hard work,
Jay