Regarding the wall thickness of heat exchange tubes
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I want to build a heat exchanger. The material for the heat exchange tubes is 316L. Water and steam containing 0.25% sulfuric acid and 0.23% phosphoric acid flow through these tubes... The pressure is 3 kilograms, and the operating temperature is 140°C. If tubes with a diameter of 14mm or 17mm are used, what will be the corrosion rate? How much corrosion margin should be considered during design? What should be the thickness of the heat exchange tubes?
I checked the manual; it shows data up to 100 degrees, and beyond that it’s no longer available......:'(
No data could be found; it is recommended to change the material.
If it’s a disposable device, it can be used. If you plan to use it for many years, it is recommended to switch to titanium tubes.
What would the thickness be if it were replaced with a titanium tube? Is there any calculation software that can directly produce the result?
2-2.5mm is sufficient. So far, there is no computing software that can directly produce the results
Software can only calculate mechanical strength; as for corrosion, no software can estimate it
If you’re not sure, conduct a corrosion rate test, but it’s quite troublesome. Indeed, if it can’t be found, switch to a more suitable material.
Using TP316L stainless steel tubes is sufficient; there’s no need to be too wasteful
Only corrosion tests can be performed; there is no algorithm, and it’s not possible to carry out calculations either.
How is corrosion margin calculated? I'm also very curious