We are facing the problem of Lead coil failure in vapour area of Rectangular tank.
We have tried and tested only lead is sustaianble for our application.
Is there any non mettalic heating system??
2) Teflon-coated metal HXers. The major manufacturers all carry them; the cost is about 20-25% greater than for bare 304 SS, and then you further need to increase the area by 20%. However, maybe more efficient than much thicker wall lead pipe. Need to avoid scratches, of course.
3) Zirconium, tantalum, titanium or some other chemically resistant HXer. I use Zr HXer for cooling sulfuric acid anodizing solution, and due to higher efficiency, am using a much smaller HXer than previously with lead (pipes lining nearly all the entire tank walls). Now, only have Zr HXer on the back wall. Due to the smaller size & weight and ease of installation, the installed cost is less than for lead, plus have more usable space. See