Material issue with heat exchange tubes
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The heat exchange tubes in positive-displacement heat exchangers are usually made of T3 or 20 steel; 20 steel is prone to corrosion while T3 is difficult to work with. Is it possible to use stainless steel instead? I would appreciate some advice from those with more experience. Thank you!
Why not? As long as the desired heat exchange effect can be achieved while avoiding these drawbacks, why not do it?
Stainless steel can certainly be used; it isn’t determined by the structure, but rather by the medium you use
Stainless steel can certainly be used, but the cost is relatively high; our company uses copper pipes as they are more resistant to seawater corrosion
Is the heat transfer performance of stainless steel slightly worse? It is used to heat cold water; the temperature difference is small, and there are certain requirements regarding the quality of water
It can be used; the thermal conductivity of stainless steel is only two-thirds that of carbon steel