I'm just a guy with opinions no expertise in this area.
Would a quartz tube work the best? ( boundary layer )
As for a vortex inducer. What do you think would work the best for this application?
Please comment or use PM.
Which flame do you think is hotter?
The flame from a propane hot water heater or the flame from his system?
This i can answer, The flame in the Joe pipe Looks Much hotter than ANY hot water heater Ive even seen. If he could have metered the flow of propane he is using that would be helpful in knowing if something unusual is happening
Which system do you think uses the least amount of propane?
I have no idea, there is not enough info to go on. (that's exactly the point of my frustration with his videos) Hasn't anyone with a flow meter ever checked this? If you have A Joe pipe I can lend you a flow meter so you can check and compare?
He states in one vid that the water in the propane is cracked into HHO and is all so burned. If this is true, I would think the flame would burn much hotter than just propane by itself. This in turn would allow you to use even less propane or none.
Not sure how water moisture in the propane tank would mix with Propane Gases. Like i said He or someone with a Joe pipe should just inject some steam into the mix and measure the results
What do you think?