Desiccant-Based Air Dehumidifier and Cooling System

Desiccant air conditioning technology involves the use of desiccant products to reduce the cost of power consumption and provide a more eco-friendly cooling effect to the surroundings by air conditioners. This technology is promising and should be implemented because the current air conditioning system is releasing harmful substances such as chlorofluorocarbons(CFCs) and hydrochlorofluorocarbon(HCFCs) to surroundings which are potential causes of ozone depletion layer and asthma for humans. Desiccant materials absorb existing moisture from ambient air to reduce surrounding humidity; whereby low humidity make the surrounding to be cooler than the actual temperature. There are two different forms of desiccants, which are solid and liquid desiccants. The solid form of desiccants holds water vapor from ambient air on its surface by adsorption meanwhile liquid form of desiccants absorbs water vapor from the ambient air by absorption [2]. A strong desiccant can attract water molecules starting from 10% up to 1100% of its dry mass of water vapor, considering the moisture content in the ambient air.

There will be some experiments conducted using desiccant materials, CAD model via Solidworks 2020, and Computational Fluid Dynamics(CFD). This simulation is important to be performed to evaluate the velocity of the air and the inlet temperature of the desiccant wheel and regenerator in the modified air conditioners. The expected outcomes are that the modified air conditioners will be able to reduce the surrounding humidity and reduce the power consumption by 30-35%. Lastly, is that a suitable desiccant material for dehumidification purposes will be proposed at the end of this research.