الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
The global energy crisis, climate change and increased air conditioning demands have emphasized the need for developing new cooling technologies. Foremost amongst them are the sorption technologies working on low grade heat. The liquid desiccant system can be used to achieve the decoupling of the air latent load and sensible load removal by trapping water molecule on the surface of the desiccant. An experiment of counter-flow dehumidifier was setup by using liquid desiccant Lithium Chloride (LiCl) with 40 % concentration through packed towers consisting structure packing of cellulose rigid media pads, to evaluate the effect of various flow conditions on dehumidification. We considered three liquid mass flow rates, and four air flow rates from which we derived a dimensionless factor ( ̇ ̇ ̇⁄) as a ratio between the liquid flow rate and air flow rate, used as a unique test factor for the study of the results. This presented twelve experimental conditions affecting dehumidification effectiveness ( ) and moisture removal rate (MRR). Three damper positions, fully closed, 50 % open and fully open, were applied during these twelve conditions, as changing the percentage of fresh air affects the system performance and represents different operating conditions. It was concluded that the increase of fresh air load percentage is directly proportional to moisture removal rate and indirectly proportional to the speed of reaching steady state condition. Also the dehumidifier effectiveness decreases when air flow rate increases while it increases with increased desiccant solution flow rate. Moreover the temperature of desiccant LiCl in dehumidifier tower affects the temperature of outlet air. Noting that having a low airflow value prevents carryover of liquid desiccant and reduces the required cooling and regeneration energy for it.