The water conditioning needs of hospitals and commercial buildings arise in equipment such as steam boilers, hot water boilers, cooling towers, and closed-loop heating/cooling systems. Auxiliary facilities in such buildings are centrally located, and closed-loop systems serve the entire building.
Steam boilers in hospitals and commercial buildings are low-pressure steam boilers, and a steam boiler conditioning program is applied, which includes combined chemicals and condensate line chemicals. In the presence of a hot water boiler, a chemical containing combined products will also be required for the hot water boiler. In buildings with boilers, using chemicals approved for drinking water, if the hot water lines are galvanized or steel, can prevent hardness scale or corrosion in the lines.
For heating and cooling closed-loop systems, water is filled only once. We recommend that the water to be filled into these systems should meet the quality parameters of <10 ppm total hardness and <2500 μS/cm conductivity. Nitrite, molybdate, or silicate-based products are used in these systems.
In cooling towers, the use of dispersants to prevent atmospheric pollutants and the minimization of corrosion with corrosion inhibitors are essential. A disinfection program with biocides must be applied to prevent microbiological formation in cooling towers. In buildings with air conditioning units located near cooling towers, continuous precautions should be taken against Legionella bacteria.