I am writing these posts for two main reasons. The first is for my benefit, in that I find that if I have got to the point where I can explain my thinking to others, then I've got to grips with the problem myself. The second is that I might just help others going down this same path, by documenting my thought processes. It's three months since I wrote the Part I of these three Thermal Design posts, and I concluded this by saying that I intended to adopt Jeremy Harris's UFH For A Low Temperatu