| Tw = Tube wall temperature, F |
| Flux = Flux rate, Btu/hr-ft2 of bare tube |
| do = Outside tube diameter, in |
| di = Inside tube diameter, in |
| tw = Tube wall thickness, in |
| Rfi = Inside fouling factor, hr-ft2-F/Btu |
| hi = Fluid film coefficient, Btu/hr-ft2-F |
| kw = Thermal conductivity of tube wall, Btu/hr-ft-F |
| Tf = Bulk process fluid temperature, F |
We can try this calculation using the following script.
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