Heat exchange area: The proportion of titanium straight tube and titanium twisted/threaded pipe is 1.3:1. After rolling into 1 meter titanium threaded tubing, it need 1.3 meter titanium straight tube (The ratio has a direct relationship with the depth and the quantity of thread.)
Water flow rate: The heat transfer time of the titanium twisted/threaded pipe is long, because the big resistance and slow velocity when the medium through the internal thread channel.
Turbulent reactive: The molecules activity will be increased which turbulent in the wake of screw channel.
Cleanse scale: Turbulence form rotating flushing, which increased cleaning scales ability.
The structure, size, welding head: Titanium twisted/threaded pipe can swaps without preconditions with titanium straight tube, but it needs smaller volume, because of the high efficiency.
The total thermal efficiency: Titanium twisted/threaded pipe is 1.3-2.6 times for titanium straight tube. (The factors has a direct relationship with the depth and the quantity of thread.)