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eng.fouling-resistance-heat-exchanger Calculator
Calculates heat exchanger fouling resistance from deposit thickness and thermal conductivity, and its effect on overall heat transfer coefficient. Heat exchanger performance degrades over time as fouling accumulates — TEMA standards specify design fouling resistances from 0.0001 to 0.001 m²K/W.
Inputs
Clean U W M2K
Reference formula or conversion factor shown for context.
Fouled U W M2K
Reference formula or conversion factor shown for context.
Surface Area M2
Two-dimensional surface extent (m²). For complex shapes, break into simpler sub-shapes and sum.
Results
fouling resistance Rf (m²·K/W)
Opposition to current flow (Ω). Ohm's Law: V = IR. Lower resistance means more current for the same voltage.
capacity loss (%)
The decrease or degradation from the baseline.
heat duty reduction (W, ΔT=100K)
The value at the specified point or condition.
TEMA class B fouling factor
A dimensionless multiplier applied in the calculation.