الفهرس 
Statement of the ProblemOnly 14 pages are availabe for public view
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Abstract
The present experimental study aims to innovate a new design of desiccant dehumidifier that operated with high efficiency, in order to improve the performance of desiccant air conditioners and to achieve the thermal comfort conditions with the lowest power consumption rates. This was done by constructing, designing, and testing an innovative configuration of the desiccant dehumidifier with a silica gel-based composite with Al2O3 nanoparticles for adsorption air conditioners. A proposed configuration consists of two innovative configurations of the desiccant dehumidifier, air blower, and electrical air heater. The experimental results showed that the use of the innovative configuration of the desiccant dehumidifier improved the dehumidification process, the average the moisture removed capacity reached 8.7 gw/kg dry air. Also, the average dehumidification coefficient of performance reached 0.402, 0.42, and 0.403 for reactivation air temperature 75 oC, 80 oC, and 85 oC, respectively. These results presented that the highest dehumidification coefficient of performance was achieved at a regeneration air temperature of 80 oC. Moreover; by adding the Al2O3 nanoparticles to the silica gel the cycle time for reactivation is reduced to 35 min (by 12.5% reduction in the cycle time), this will reduce the energy consumption rates for reactivating the desiccant dehumidifier. This reduction in energy consumption will result in a reduction .in operating cost.