Extraction of Water from Atmospheric Air Using Double Slope Condensation Surface. | ||||
| MEJ- Mansoura Engineering Journal | ||||
| Article 6, Volume 42, Issue 1, March 2017, Page 10-21 PDF (1.39 MB) | ||||
| Document Type: Research Studies | ||||
| DOI: 10.21608/bfemu.2020.97651 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
Karim Hussein Awad  1; Mohamed Mahmoud Awad2; Ahmed Mohamed Hamed Kandel3
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| 1Instructor at the High Institute of Engineering and technology in new Damietta, Damietta, Egypt | ||||
| 2an Associate Professor at the Department of Mechanical Power Engineering, Mansoura University, Mansoura, Egypt | ||||
| 3Mechanical Power Engineering Department, University of Mansoura, Egypt | ||||
| Abstract | ||||
| In this study, extraction of water from atmospheric air using double slope condensation surface is investigated. Solar energy as a heat source and Calcium Chloride (CaCl2) as the desiccant are used. The experimental apparatus involves two parts. The first part, which functions as absorber has nine channels containing mixture of Calcium Chloride (CaCl2) and sand while the second part, which functions as transparent and condensation surface has a prism shape. At night, the absorber is exposed to atmospheric air where Calcium Chloride (CaCl2) absorbs moisture from atmospheric air. At sunrise, the absorber is covered tightly with the transparent and condensation surface that allows the transmission of sun rays to the absorber. Condensate is collected in sloping channels that fixed at the bottom inner surface of transparent cover. The temperature of transparent surface, air-vapor mixture and absorber surface, solar radiations intensity and amount of collected water are recorded during the experiments at various operating days. Experimental measurements indicate that the condensed water productivity changes with ambient conditions. It is found that the maximum yield for Aug.19th,2015 was 735 gm /m2.day for accumulative solar radiation of about 7806 W.hr/m2.day. A mathematical model is developed to estimate the solar radiation intensity and amount of collected water. Its results are compared with the experimental data and a reasonable agreement between theoretical results and experimental measurements is attained | ||||
| Keywords | ||||
| water extraction; air; double slope; condensation; solar; desiccant | ||||
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