Delaware Patent of the Month – November 2021

Xergy, Inc. is a leading innovator in ionic materials and their applications in eco-engineered products. Controlling the movement of ions and molecules through nanoscale channels within ionic materials offers revolutionary pathways for development of extraordinary home, energy, industrial, medical, and sensing products.

Desiccant systems can be used to absorb moisture in environments in an effort to reduce the latent cooling load on HVAC systems. Current technologies use large amounts of heat to regenerate the desiccant. Alternative technologies use vapor compression refrigeration (VCR) cycles to remove moisture from the air and rely on condensation to do so. This is also inefficient.

One of the keys to creating higher efficiency cooling systems is to dehumidify the air without over-cooling. Xergy has taken this key factor and developed a system to optimize it. Their cooling system utilizes integrated ionic liquid salts to create efficient dehumidification technology. The ionic liquid desiccant – or salt -has both organic cations and inorganic anions. They are also thermally stable with low vapor pressure and achieve dew point at low temperatures. These characteristics make the salts effective at efficient moisture uptake and release. This makes them ideal for use in HVAC systems. 

The ionic salt composition absorbs moisture from an inlet airflow and produces an outlet airflow with reduced moisture content. The moisture absorbed in the salts can be expelled with a heating device, resetting the salts to be used again. The waste heat from the cooling system can be used to further enhance the efficiency as the ionic salt cycles back and forth between absorbing moisture in a conditioner and then desorbed by heating. Asw e come closer and closer to purely efficient technology, we approach critical contributions to the sustainability of our environment. 

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