Due in large part to their ability to deliver reliable, maintenance-free performance for up to 10 years, UV-C LEDs increasingly are being found in today’s low-flow, point-of-use (POU) water disinfection systems. It’s not surprising then that design engineers are taking UV-C LEDs to the next level by putting them to work in significantly higher-flow point-of-entry (POE) home and industrial water treatment systems.
While such systems require a greater number of LEDs, determining the projected LED population’s lifetime and reliability at the outset still are critically important. This article demonstrates the importance of taking an LED population’s reliability data into account during a POE system design phase. It also provides performance testing results for an NSF 55 Class B POE reactor at different flow rates. NSF Class B ultraviolet (UV) water treatment systems are intended for treatment of already treated water to ensure water quality. These systems are installed at point of entry (POE) in residential applications to protect water in the home from opportunistic piping pathogens or possible residual contaminants from the municipal infrastructure. Read More