The characteristics of titanium tubes!
1. Wall thickness of titanium tube
The wall thickness of the heat transfer pipe is determined by the usage conditions, pipe plate materials, construction capacity of the expansion operation, and welding technology of the pipe end. Due to the small diameter of the heat transfer pipe, the strength requirements are not high. Therefore, in practical use, thinner wall thickness pipes are used, generally, copper alloy pipes have a wall thickness of 0.9mm-1.2mm; Using titanium pipes instead, thin-walled welded pipes with a wall thickness of 0.3mm can be used in areas with low corrosion.
2. Thermal conductivity of titanium tubes
Due to the different materials of the heat transfer tube, the thermal conductivity also varies. For example, titanium is 17W/(m · k), aluminum brass is lOOW/(m · k), and 70/30 white copper is 29W/(m · k). Therefore, the heat transfer effect of the heat transfer tube can be controlled through changes in wall thickness. Among the above materials, titanium has a low thermal conductivity. If thin-walled titanium welded pipes are used, although their thermal conductivity is worse than aluminum brass, it is equivalent to 90/10 white copper and better than 70/30 white copper.
3. Economy of titanium tubes
The unit mass price of titanium tube is 2-6 times more expensive than that of copper alloy tube. However, considering the cost performance ratio, the price of titanium tube can compete with that of copper alloy tube. Because of the low density of titanium and the same wall thickness, the quality of titanium tube with the same length is only 50% of that of copper alloy tube. When the wall thickness of titanium tube is 50% of that of copper alloy tube, the quality of titanium tube with the same heat transfer area is only 1/4 of that of copper alloy tube. According to the current price level, The overall price of using thin-walled titanium welded pipes is the same as that of aluminum copper pipes, which is cheaper than white copper pipes. It can be seen that titanium tubes are competitive in terms of price.
