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How do you calculate (or otherwise determine) h_i and h_o (convective heat transfer coefficients) for a heat exchanger? Standard thermodynamics equation below for reference.

My specific situation is water and a stainless steel pipe - but I am curious about both the specific and general case.

Thanks!

How do you calculate (or otherwise determine) $h_\text{inner}$ and $h_\text{outer}$ (convective heat transfer coefficients) for a heat exchanger?

For reference, the standard equation is: $$ \text{UA}~=~\frac{n}{\frac{1}{h_\text{inner} A_\text{inner}} + \frac{1}{2 \pi kL} \ln{\left(\frac{r_\text{outer}}{r_\text{inner}}\right)} + \frac{1}{h_\text{outer} A_\text{outer}}} \,. $$

My specific situation is water and a stainless steel pipe, but I am curious about both the specific and general case.