So, for those readers who may not be completely following this ramble, regarding turbulent flow, here is a chart that illustrates the idea:
As you can see, once the level of turbulent flow is reached, there is a noticeable jump in heat transfer.
So steve, who is funding this research and why is the flow enhansing fluid proprietary? Do you have any diagrams or photos of the 'improved' tube?
And what role are you playing in this study?
Lastly, what have you learned form this experience that will enable DIY folks to improve their efforts?
-AC