HydroTech Services, Inc. pays close attention to the chemistry of closed loop recirculating water systems because corrosion and microbiological fouling can severely impact heat exchange even in systems experiencing very little water loss. If left unchecked, corrosion activity and bio fouling can drastically shorten the useful life of piping, valves, and heat exchangers in a closed loop water system.
Closed loop systems are designed to distribute heated or chilled water throughout a designated area. Water temperatures in closed loops typically range from 42°F to 350°F and water velocities are usually two to five feet per second. Process water loops, however, can experience temperatures as high as 450 degrees Fahrenheit and velocities of ten feet per second. Most closed loop systems contain several different types of metals including mild steel, cast iron, copper, brass, and aluminum. A water treatment approach for closed loop systems must take into consideration all of these factors.
An effective closed loop treatment program requires corrosion inhibitors, scale control agents, and micro biocides. HydroTech treatment programs include all of these plus the service necessary to insure total control of system chemistry every day of the week.