Performance analysis of dehumidification rotating wheel using liquid desiccant

An Experimental Study of Desiccant Wheel-Air Humidifier Integration in Hot and Dry Climates

“…Changes of the regeneration air temperature; the rotational speed of desiccant wheel and the regeneration air mass flow rate are investigated. As the regeneration temperature increased, the adsorption capacity decreases, Ahmed et al [4], where more water is removed and the vapor pressure on the bed surface decreases resulting in the best performance of air humidifier.…”

“…(3) It is a clean technology, which can be used to condition the internal environment of buildings and operates without the use of harmful refrigerants. (4) The achieved control of humidity is better than that when using vapor compression systems. (5) In some cases, the cost of energy to regenerate the desiccant is less than that when compared with the cost of energy to dehumidify the air by cooling it below its dew point.…”

“…The desiccant material was regenerated by means of low-temperature thermal energy (abut 65 °C) from a microcogenerator. Hamed et al [4] have carried out theoretical and experimental evaluation of the effect of bed configuration and operating conditions on the performance of desiccant dehumidification system. An experimental analysis was presented on the performances of a silica-gel desiccant wheel by Angrisani et al [5], inserted in a test facility characterized by an advanced desiccant air handling unit, coupled to an electric chiller, a natural gas-fired boiler and a small scale cogenerator.…”

Successive dehumidification/regeneration cycles by LiCL desiccant for air-conditioning system

“…Moreover, desiccant regeneration requires a temperature level around 40-50°C which can be easily obtained by using solar energy or heat recovered from an industrial process. Also, Ahmed Hamed [14] has carried out a study on the effect of operating conditions and bed configuration on the absorption and regeneration processes by using LiCl. It is found that at regeneration temperature of 85°C the amount of water absorbed is nearly equal to the amount of water desorbed for a complete cycle.…”

Desiccant wheel regenerated by thermal energy from a microcogenerator: Experimental assessment of the performances

“…Stabat et al [12] developed a desiccant wheel model to be adapted to building simulation code, which was in good agreement with the experimental and manufacturer data. Hamed Ahmed et al [13] developed a mathematical model to evaluate the effect of the operating conditions on the performance of a rotating dehumidification system using a liquid desiccant. The effects of regeneration air temperature, process air and regeneration air inlet humidity ratio, rotational speed, process and regeneration air velocity on the amount of water absorbed are investigated.…”