Will the thermal conductivity of carbon steel pipes change after they are painted?
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Will the thermal conductivity of carbon steel pipes change after they are painted? Recently, we have been discussing the selection of pipe heat tracing materials. Some people say that the thermal conductivity of carbon steel pipes is better than that of stainless steel. However, heat tracing pipes must be anti-corrosion. After painting, the thermal conductivity of carbon steel pipes still remains.
Do you have any data? I just think it has an impact.
Many people think that carbon steel has a higher heat transfer coefficient than stainless steel
Personally, I think it can be ignored, as they are all insulated together with the heat tracing pipe. If you really want to get some data, you can ask the designer to calculate how much the thermal conductivity will be reduced after painting.