Maximum permissible Cycles of Concentration ( NC )

The overall maximum permissible NC is the minimum of the intermediate calculated NC, according to the relation:

NCmax= min( maxNCAlk, maxNCSS, maxNCTDS, maxNCSiO2 )

Finally maximum permissible NC is a function of the operational parameters of the system, the nature of boiler water treatment in use and the make-up water quality.

As to improve we have either:

• Change the operating conditions
• Change the boiler water treatment chemicals
• Change the make-up analysis.

Improving cycles of concentration will provide conservation in water and energy.

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