A self-sustainable solar desalination system using direct spray technology
Alrowais, Raid Naif
Shahzad, Muhammad Wakil
Ng, Kim Choon
KAUST DepartmentBiological and Environmental Sciences and Engineering (BESE) Division
Environmental Science and Engineering Program
Water Desalination and Reuse Research Center (WDRC)
Online Publication Date2020-06-07
Print Publication Date2020-08
Embargo End Date2021-06-16
Permanent link to this recordhttp://hdl.handle.net/10754/663756
MetadataShow full item record
AbstractSolar desalination offers a sustainable solution to growing global water demand due to the geographical coincidence between high solar availability and severe water scarcity. This paper presents a self-sustainable solar desalination system combining a spray-assisted low-temperature desalination system, solar thermal collectors, and heat storage tanks. A mathematical model is firstly developed and validated with laboratory pilot for the proposed large-scale solar-powered desalination system. Afterward, the long-term productivity and energy efficiency of the system is evaluated under the climatic conditions of Makkah, Saudi Arabia. The proposed solar desalination system is able to provide an uninterrupted water supply of 20 kg/day for per square meter solar collector area, and the value can be further increased by optimizing the interactions of the three subsystems, i.e. efficiency of the solar collectors, temperature and heat losses in the storage tank, and energy efficiency of the desalination system. With a collector area of 360 m2, the annual productivity is maximized when the feed flowrate is 1.7 kg/s and the diameter of the heat storage tank is 1.9 m. The desalination cost is estimated to be $1.29/m3, which is much lower than other solar thermal desalination systems.
CitationChen, Q., Alrowais, R., Burhan, M., Ybyraiymkul, D., Shahzad, M. W., Li, Y., & Ng, K. C. (2020). A self-sustainable solar desalination system using direct spray technology. Energy, 205, 118037. doi:10.1016/j.energy.2020.118037
SponsorsThis research was supported by the Water Desalination and Reuse Center (WDRC), King Abdullah University of Science and Technology (KAUST).