This paper discusses the successful application of controlled release technology to HVAC cooling systems. This technology is ideally suited for systems under 500 tons and where traditional liquid chemicals are too hazardous or difficult to apply. The technology eliminates maintenance and operation of metering pumps, liquid chemical storage and spill containment. Due to the concentration of the actives, less material is required making roof top towers much more practical to treat. The coated or contained chemistry eliminates many of the traditional chemical handling concerns. The simplicity of the system and environmental friendliness make it ideal for new construction. This technology eliminates the need for liquid chemical storage, containment and metering pumps.
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