More than 60% of a building’s energy usage is related to HVAC. With efficiencies up to 70%, the Alfa Laval Kathabar twin-cel energy recovery system exchanges temperature and humidity between ventilation and building exhaust air via a biocidal desiccant transfer solution. In each twin-cel section, the desiccant solution passes through high efficiency packing where it contacts the airstream.
In the summer, the warm, moist ventilation airstream is cooled and dehumidified by transferring energy to the relatively cool, dry building exhaust. In the winter, the cold, dry ventilation air is heated and humidified by the relatively warm, moist building exhaust. The difference in enthalpy between the building exhaust air and the entering ventilation air is key in the twin-cel energy recovery process.
Each system is optimized for energy efficiency. When possible, existing exhaust streams are harnessed to power the regeneration process.