Question about a design for a direct fire RIMS design

[Magnetar]

I've been bouncing this idea around for awhile about designing a direct fire RIMS system. My idea basically can be broken down into several different pieces. The "heating element" would consist of a burner rod for flames natural gas or propane or two rods of burner nozels. This would then run in the middle of what basically is a sleeve that would have to machined end caps that are open in the middle where the gas burner rods would go. Each End cap would have 2 different metal pipes that would screw into the end cap forming a gap in the middle for fluid to be pumped through. So Effectively the internal pipe or sleeve wall would serve as the heating element with the flames being the equivalent of the current. Further more the internal sleeve would have a spiral grooves machined along the pipe or sleeve that would be where liquid would be forced through. The outside pipe would have tri-clamp inlets on either side serving as the entry and exit. The Caps would be machined so each sleeve would screw in with a silicone gasket sealing the device. Wort would be forced from a pump around the grooves increasing the contact with the heat, heating it then outside of the device. And because The burner tubes aren't really fully sealed it could have fans or vents providing oxygen. the burner tubes could be controlled with a valve and an ignition rod. The triclamps on the end could also be places where a temperature themowell could be added as an attachement on something like a tee joint. Furthermor the entire design could be unscrewed so as to be cleaned and sanitized. Would something like this work? It would require metal machining and or 3d metal printing to build from a cad file so a little bit past a your average garage project, but Its basically similar to how the internal of an old school jacuzi heater.

 

[Bobby_M]

Typically "direct fire RIMS" is a name reserved for a mash tun with direct flames underneath. I just have to ask, what is your ultimate goal here? Regulating heat with electric elements is much easier and safer than gas.