Heat exchange area of threaded tube
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What is the formula for calculating the surface area of a threaded tube (heat exchange area), and what are its advantages over plain tubes?
Look at the thread depth; the area actually increases by not much, but it does have a certain effect on enhancing heat transfer
Threaded pipes do provide some benefits in the early stages, but their performance is not as good as that of plain pipes in later stages
Are there any specific figures, such as how many times the heat exchange area of a threaded pipe with the same length and diameter is that of a plain pipe?
Looking at the depth, it ranges from 3% to 6%