Evaporative recirculation cooling water system, method of operating an evaporative recirculation cooling water system and a method of operating a water deionizing system

An evaporative recirculation cooling water system comprising:

• a recirculation loop to recirculate water through the system;
• a construction with a space to cool the water in the recirculation loop by evaporation;
• a water entry point to allow water into the recirculation loop;
• a charge barrier flow through capacitor constructed and arranged to remove ions from the water between the water entry point and the recirculation loop;
• and
• a scale inhibitor dosing system downstream of the water entry point and upstream of the charge barrier flow through capacitor to dose a scale inhibitor into the water flow from the water entry point to the charge barrier flow through capacitor.