Volume 14 Issue 1 August - October 2018
Research Paper
Performance
Analysis of Humidification-Dehumidification Desalination Processes
Giuma Fellah*
*Professor,
Department of Mechanical and Industrial Engineering, Faculty of Engineering,
University of Tripoli, Libya.
Fellah, G. (2018).
Performance analysis of humidification-dehumidification desalination processes.i-manager’s Journal on Future Engineering and
Technology,14(1), 16-25. https://doi.org/10.26634/jfet.14.1.14596
Abstract
The
processes of humidification and dehumidification (HD) are based on the fact
that air can be mixed with quantities of vapor. When airflow is in contact with
salt water, air extracts a certain quantity of vapor. On the other hand, the
distilled water is recovered by maintaining the humid air in contact with
cooling surfaces. A wide range of thermal energy including solar, geothermal,
exhaust gases, and fossil fuel may be used to operate HD desalination systems.
These systems are suitable for arid areas, and when the demand for fresh water
is decentralized. In the present work, the influence of the feed salinity and
air flow rate on the thermodynamic performance is analyzed. It is found that
both the performance ratio and the productivity decreases with the increase in
the salinity of the feed water. A parametric study is performed to find the
effect of the air flow rate on the productivity and the performance ratio of
the system. It is found that both the productivity and the performance ratio
decreases with the increase in the air flow rate.
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