Abstract
In this study, energy and exergy analysis of experimental results obtained from a dehumidification system using LiBr-aq (lithium bromide-water) and LiCl-aq (lithium chloridewater) as desiccant was made. In dehumidifier and regenerator columns polycarbonate sheets, which have not been used before, were used as packing material to increase contact area in purposed liquid desiccant dehumidification system. In the analysis, variation of electrical coefficient of performance and exergy efficiency with airflow rate for different solution mass flow rates were investigated. Because of investigation, maximum values of electrical coefficient of performance and exergy efficiency were calculated approximately as 2.8 and 18%, respectively.
Highlights
Nowadays, vapor compression refrigeration systems are extensively used for heating/cooling processes
In the liquid desiccant dehumidification system, energy and exergy analysis were conducted for 43% wt LiBr-water and LiCl-water solutions separately
Electrical coefficient of performance and exergy efficiency were chosen as performance parameters and variation of these parameters with air flow rate and solution mass flow rates were investigated
Summary
Vapor compression refrigeration systems are extensively used for heating/cooling processes. These types of systems are highly dependent on electrical energy and provide limited humidity control and indoor air quality. For this reason, researchers lead to alternative air conditioning systems. Liquid desiccant dehumidification systems are good alternatives to the vapor compression systems commonly used in air conditioning processes. The operation of the system is based on the principle that air is brought into contact with a low vapor pressure liquid to remove moisture from the air. Liquid desiccant dehumidification systems have a low coefficient of performance, they are more interesting for general daily usage due to temperature independent humidity control and better indoor air quality [14]. The electrical coefficient of performance and exergy efficiency were chosen as performance parameters and two solutions were compared according to these parameters
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