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Article

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

1
Arab Academy for Science and Technology and Maritime Transport, Mechanical Engineering Department, Alexandria 21611, Egypt
2
EDZE (Energía), Campus de Viesques, Universidad de Oviedo, 33204 Gijón, Asturias, Spain
3
Departamento de Ingeniería de Procesos, Edificio de Ingenierías-Tafira Baja, Universidad de Las Palmas de Gran Canaria, 35017 Las Palmas G.C., Spain
*
Author to whom correspondence should be addressed.
Water 2020, 12(8), 2264; https://doi.org/10.3390/w12082264
Received: 9 May 2020 / Revised: 1 July 2020 / Accepted: 3 July 2020 / Published: 12 August 2020
(This article belongs to the Section Wastewater Treatment and Reuse)
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. View Full-Text
Keywords: humidification-dehumidification; desalination; ultrasonic atomization; hybrid system humidification-dehumidification; desalination; ultrasonic atomization; hybrid system
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MDPI and ACS Style

E. Tourab, A.; Blanco-Marigorta, A.M.; M. Elharidi, A.; Suárez-López, M.J. A Novel Humidification Technique Used in Water Desalination Systems Based on the Humidification–Dehumidification Process: Experimentally and Theoretically. Water 2020, 12, 2264. https://doi.org/10.3390/w12082264

AMA Style

E. Tourab A, Blanco-Marigorta AM, M. Elharidi A, Suárez-López MJ. A Novel Humidification Technique Used in Water Desalination Systems Based on the Humidification–Dehumidification Process: Experimentally and Theoretically. Water. 2020; 12(8):2264. https://doi.org/10.3390/w12082264

Chicago/Turabian Style

E. Tourab, Ahmed, Ana M. Blanco-Marigorta, Aly M. Elharidi, and María J. Suárez-López. 2020. "A Novel Humidification Technique Used in Water Desalination Systems Based on the Humidification–Dehumidification Process: Experimentally and Theoretically" Water 12, no. 8: 2264. https://doi.org/10.3390/w12082264

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