A Novel Humidification Technique Used in Water Desalination Systems Based on the Humidification-Dehumidification Process: Experimentally and Theoretically

被引:12
|
作者
E. Tourab, Ahmed [1 ,2 ]
Blanco-Marigorta, Ana Maria [3 ]
M. Elharidi, Aly [1 ]
Suarez-Lopez, Maria Jose [2 ]
机构
[1] Arab Acad Sci & Technol & Maritime Transport, Mech Engn Dept, Alexandria 21611, Egypt
[2] Univ Oviedo, EDZE Energia, Campus Viesques, Gijon 33204, Asturias, Spain
[3] Univ Las Palmas Gran Canaria, Dept Ingn Proc, Edificio Ingn Tafira Baja, Las Palmas Gran Canaria 35017, Spain
关键词
humidification-dehumidification; desalination; ultrasonic atomization; hybrid system; AIR HUMIDIFICATION; HEAT-PUMP; ENERGY; UNIT; PERFORMANCE;
D O I
10.3390/w12082264
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
In this paper, an experimental and theoretical investigation is performed on a novel water desalination system based on a humidification-dehumidification technique using a heat pump. An ultrasonic water atomizer is used in the humidification process in order to improve the humidification system. In addition to that, a new configuration is employed in the humidification process (hybrid atomization system), which combines the traditional spraying atomization system and the ultrasonic water atomizer. The new humidification system performance is investigated and compared with the spraying water atomizer system in terms of humidification effectiveness and freshwater productivity. The results show that the ultrasonic water atomizer has enhanced and improved humidification effectiveness, and consequently, the productivity of freshwater. The maximum humidification effectiveness and productivity achieved by the ultrasonic water atomizer are 94.9% and 4.9 kg/h, respectively, meaning an increase of 25.2% and 18.8%, compared to the traditional spraying atomization system. The hybrid system increases humidification effectiveness and productivity by 3.8% and 8.2%, respectively, in comparison with the stand-alone ultrasonic water atomizer. A cost analysis was also carried out in this paper in order to perform an economic comparison of different humidification processes (spraying, ultrasonic; and hybrid atomization systems). The minimum production cost of one liter of freshwater amounts to $0.0311 with the spraying system, $0.0251 with the ultrasonic system, and $0.0250 with the hybrid atomization system. These results reveal the profitability of the new configuration.
引用
收藏
页数:23
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