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Humidification & dehumidification


Cut energy use and humidifier maintenance


Stephen Finkel, DriSteem regional sales manager discusses the use of advanced steam dispersion and water treatment systems to reduce energy consumption and humidifier maintenance


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ffective humidity control is essential for maintaining high indoor air quality standards, enhancing occupant comfort, preserving


materials, and protecting the integrity of critical processes in controlled environments. By achieving and maintaining optimal relative humidity levels – typically between 40% and 60% – humidity control supports human health, extends the lifespan of materials, and ensures the stability of sensitive operations. Resistive electric humidifiers are an excellent


choice for many applications due to their ability to provide precise humidity control. However, their energy-intensive operation and high maintenance demands can present challenges. By optimising steam dispersion systems and implementing effective water treatment strategies, these challenges can be addressed, resulting in substantial reductions in energy consumption and maintenance requirements. In resistive electric humidification systems, steam


is generated and sent to the steam dispersion system, which distributes it within ducts or air handlers. The dispersion system ensures the steam is effectively carried through the ventilation system to humidify the occupied space uniformly. The efficiency of this process is critical for minimising energy consumption. Poorly designed dispersion systems can result in uneven humidity levels, causing the equipment to overcompensate and consume more energy. Steam dispersion technologies have evolved to


provide superior energy performance. For example: ¡ Short absorption distance dispersion systems ensure that steam is absorbed quickly into the air, reducing the likelihood of condensation in the ductwork. This efficiency reduces the demand for heating elements, lowering overall energy use. ¡ Insulated dispersion tubes minimise heat loss during transmission, maintaining the steam’s temperature until it reaches the desired area. This enhances the overall system efficiency and contributes to lowering operational costs by reducing the energy required for heating. ¡ Condensate-return dispersion systems capture and return condensate to the system, minimizing water waste and reducing the energy required to generate new steam. This closed-loop design improves operational efficiency and supports sustainability. Together, these advancements highlight the shift


towards more sustainable and energy-efficient practices in heating and humidity control systems. Water quality is crucial for the efficiency and


reliability of resistive humidification systems. Untreated water can introduce minerals and


Below: Insulated dispersion tubes provide significant energy savings. Airstream heat gain and dispersion-generated condensate production are also significantly lowered


Left: Stephen Finkel, DriSteem regional sales manager


Right: These steam dispersion panels feature short non- wetting distances. Rapid, drip-free absorption means steam does not condense on downstream device


impurities, leading to scaling, fouling, and corrosion, which increase energy consumption and maintenance needs. Scaling occurs when mineral deposits from hard water accumulate on heating elements, reducing heat transfer efficiency and driving up energy use. Corrosion from impurities, like chlorine, can damage components, causing repairs and downtime. Sediments can clog dispersion nozzles, hindering performance. Effective water treatment strategies are key to mitigating these issues. Deionization (DI) removes mineral ions, almost eliminating scaling and prolonging heating element life. Reverse osmosis (RO) reduces total dissolved solids and impurities, while water softening replaces hard water ions, decreasing scaling risk. Additionally, filtration removes sediments, protecting system components and ensuring efficient operation. Investing in the right combination of water


Above: This electric resistive humidifier is compatible with all water types. It continuously learns as it runs and automatically adapts to optimize steam output and overall performance


treatment technologies can significantly enhance system efficiency while reducing maintenance requirements. Combining advanced dispersion technology with


effective water treatment creates a synergistic approach to energy efficiency and system reliability and delivers tangible benefits: ¡ Energy savings: Advanced systems consume less electricity due to improved heat transfer and precise modulation. ¡ Reduced maintenance costs: Cleaner water and efficient dispersion reduce the frequency of component replacement and service requirements. ¡ Environmental benefits: Lower energy consumption translates into reduced carbon emissions, aligning with sustainability goals. For guidance on maintaining optimal indoor humidity and implementing effective, sustainable humidity control solutions, reach out to a DriSteem expert. They can provide tailored insights and recommendations to address your facility’s needs. Visit www.dristeem.com to learn more and connect with a humidity control specialist in your area.


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