Energy Efficient Dehumidification by Solar Driven Desiccant Systems

In regions with high humidity levels, desiccant systems are extremely effective as renewable dehumidifiers in buildings. They are also environmentally friendly, with water as their only direct emission. The resulting dehumidification of the desiccant system engenders a more comfortable human climate; it reduces the need for air cooling and therefore lowers the energy load on a building. However, the renewability of the desiccant solution is dependent on a hot water tank which is currently powered by external energy. This study will use a thermal solar tank instead of a standard domestic hot water tank to provide the heat needed to recharge the desiccant solution, eliminating reliance on outside energy. The study will observe and compare the energy load needed for air cooling before and after the introduction of a solar driven liquid desiccant system. The Interlock house, a net zero energy building equipped with a solar powered thermal solar tank, will be used as a test subject. This research will provide valuable data pertaining to the effectiveness and efficiency of solar driven desiccant systems, leading to their introduction into the common household.