Perhaps the most contentious topic in HTRI design is the Fouling Resistance ($R_f$). It is the "catch-all" safety factor, but it is often misused.
: Employs a 3D zoning scheme to calculate localized heat transfer and pressure drop profiles based on local fluid properties. Integrated Physical Properties htri heat exchanger design top
Keep the baffle pitch between of the shell inside diameter. Perhaps the most contentious topic in HTRI design