Applications / Commercial HVAC:


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Early on most building were heated with steam so the use of steam for adding moisture to the air was easy. As the HVAC industry grew and matured, steam system condensate return systems experienced issues with corrosion and it became common practice to treat the condensate before returning it to the boiler for reuse. It was later that the industry realized that using heating steam for humidification allowed the boiler water treatment chemicals to become injected into the supply air stream. This realization created a demand for unitary steam humidification systems with independent sources of power to create the steam. Electric and gas fired steam generating systems were introduced to the market and became very popular. The energy consumption of the unitary systems was not taken into consideration until much later.

The use of water spraying systems was limited by the pressure of the water and the atomization capability of the nozzles. The atomization systems were initially air/water systems, with compressed air providing the force required to create the required water atomization. The air/water nozzles were complex and required good water treatment and filtration to keep them operating efficiently. Soon the energy consumption and noise of the air compressor systems became an issue, as well as the hissing noise emanating from the nozzles.

By increasing the pressure of the water, simple nozzles could be used for atomization of the water. This provided large energy savings as compared to steam or air/water systems.

The technology ARP uses in their systems has been used for years. The application of high pressure atomizing systems in HVAC systems can produce significant energy and maintenance savings. What makes the ARP systems standout is the technology used in the pumping, valving and control technologies.

The capacity of each system is controlled by staging solenoids, which can be controlled by the building BAS system or by the ARP microprocessor. The atomization capability of the ARP nozzles provides fast absorption of the water particles into the air stream.