IMPROVING WATER PRODUCTIVITY OF THE HYBIRD DESALINATION SYSTEM
Abstract
An integrated desalination system with a combination of electrical heating by power supply and solar heating by Fresnel lens with sun tracking system was investigated in this study. The experiments were carried out under the climatic conditions of Kaohsiung City (22°36’58’’ N, 120°18’47’’ E), Taiwan. With only solar heating by Fresnel lens, the temperature of the seawater is strongly dependent on the position of the seawater tray and climatic conditions, and seawater evaporation is not stable. To maintain the uniform evaporation of seawater, an electrical heating plate was also used to provide energy for the desalination process. The results indicate that the production of distilled water is greatly improved with this solar/ electrical desalination system. At a power of 60W, the commercial energy efficiency of the system can reach 85 %, and the recovery efficiency can approach 56.52 %. Additionally, a higher annual productivity (6036 L) is obtained, and the cost per liter of distilled water is about 0.152 (US$/L).
References
WWAP (United Nations World Water Assessment Programme)/UN-Water, “The United Nations World Water Development Report 2018: Nature-Based Solutions for Water” UNESCO, Paris, 2018.
Abdallah, A. A. H. A., MODERN TECHNOLOGY AND ECONOMICAL DEVELOPMENTS IN DESALINATION ON EMPHASIS OF NUCLEAR METHODOLOGY. Acta Technica Corviniensis- Bulletin of Engineering, 11(2), 49-54, 2018.
Liu, Z., Song, H., Ji, D., Li, C., Cheney, A., Liu, Y., ... & Gan, Q., Extremely cost? effective and efficient solar vapor generation under nonconcentrated illumination using thermally isolated black paper. Global Challenges, 1(2), 1600003, 2017.
Ranjan, K. R., & Kaushik, S. C., Economic feasibility evaluation of solar distillation systems based on the equivalent cost of environmental degradation and high-grade energy savings. International journal of Low-carbon technologies, 11(1), 8-15, 2016.
Nafey, A. S., Abdelkader, M., Abdelmotalip, A., & Mabrouk, A. A. Parameters affecting solar still productivity. Energy conversion and management, 41(16), 1797-1809, 2000.
Rahbar, N., & Esfahani, J. A., Experimental study of a novel portable solar still by utilizing the heatpipe and thermoelectric module. Desalination, 284, 55-61, 2012.
Abdallah, S., Badran, O., & Abu-Khader, M. M., Performance evaluation of a modified design of a single slope solar still. Desalination, 219(1-3), 222-230, 2008.
