Cycles of Concentration (conductivity)

Measures how many times the recirculating water has been concentrated relative to makeup water using conductivity as the tracer. Higher cycles mean less water and chemical use but greater scaling pressure.

$$\text{COC}=\frac{\text{Tower conductivity}}{\text{Makeup conductivity}}$$

Variables

Symbol	Meaning	Unit
$\text{Tower conductivity}$	Conductivity of the recirculating tower water	microsiemens per cm
$\text{Makeup conductivity}$	Conductivity of the makeup water	microsiemens per cm

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Part of The Blueprint of Water