Pressure drop is usually treated as a cost to minimise. Normalised for flow, it becomes a second health signal that catches restrictive fouling.
Pressure drop as a diagnostic signal, not just a nuisance Read Post »
Outlet temperature shows how a heat exchanger behaves today, not how healthy it is. UA gives a load-independent signal from existing instrumentation.
Fouling isn’t one problem. What builds up on a heat exchanger surface depends on what flows through it, how hot the surface runs and how the fluid moves.
Fouling 101: the main mechanisms — and why each behaves differently Read Post »
A heat exchanger rarely fails dramatically. It declines slowly and expensively as a thin film of deposit builds on its surfaces.
