Desalination Technologies and Renewable Energy Sources

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Water-Energy Nexus".

Deadline for manuscript submissions: closed (24 November 2023) | Viewed by 1346

Special Issue Editor

1. Mechanical Engineering Department, King Saud University, Riyadh 11421, Saudi Arabia
2. KA.CARE Energy Research and Innovation Center at Riyadh, Riyadh, Saudi Arabia
Interests: desalination; heat and mass transfer; evaporation and condensation; power systems
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The desalination of sea and brackish waters is becoming an essential means of supplying fresh water in an increasing number of countries worldwide. Conventional desalination technologies suffer from major limitations including high energy consumption, low recovery ratio and environmental impacts associated with brine discharge. The use of renewable energy (RE) sources to power desalination systems is identified as a promising way to tackle the above-mentioned limitations of fossil fuel desalination plants. However, several barriers limiting the industrial development and implementation of RE desalination units are still present such as the high investment cost of RE equipment and the intermittent behavior of RE systems.

The proposed Issue can be viewed as a framework for both original contributions and state-of-the-art reviews on integrated RE desalination facilities. Several technical, economic and environmental aspects will be addressed for various scenarios and configurations of coupling desalination and renewable energy systems. This Issue will also focus on the challenges and barriers of sustainable desalination.

Topics of interest for presentation in this Issue include but are not limited to:

  • Innovative sustainable desalination;
  • Solar photovoltaic (PV) and desalination;
  • Solar thermal energy and desalination;
  • Wind energy and desalination;
  • Geothermal energy and desalination;
  • Solar power and desalination cogeneration;
  • Cost analysis of RE desalination;
  • Sustainability, life cycle analysis and environmental impacts of desalination.

Dr. Jamel Orfi
Guest Editor

Manuscript Submission Information

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Keywords

  • solar desalination
  • geothermal energy
  • solar interfacial evaporation
  • PV‒reverse osmosis
  • hybrid desalination driven by RE sources
  • cost of desalinated water using RE sources
  • energy storage

Published Papers (1 paper)

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Research

17 pages, 3118 KiB  
Article
A Feasibility Study of Vortex Tube-Powered Membrane Distillation (MD) for Desalination
by Jamel Orfi and Emad Ali
Water 2023, 15(21), 3767; https://doi.org/10.3390/w15213767 - 27 Oct 2023
Viewed by 1042
Abstract
This work theoretically studies the capability of using vortex tubes to provide the necessary heating and cooling energies required by a typical direct-contact membrane distillation (MD) process. The vortex tube generates a temperature separation that can supply the membrane distillation process with sufficiently [...] Read more.
This work theoretically studies the capability of using vortex tubes to provide the necessary heating and cooling energies required by a typical direct-contact membrane distillation (MD) process. The vortex tube generates a temperature separation that can supply the membrane distillation process with sufficiently hot feed and cold permeate with a temperature difference as large as 70 °C. Several structures integrating vortex tubes and MD with and without heat recovery and cascading are proposed and their respective performances are assessed and compared. A maximum distillate production of 38.5 kg/h was obtained at an inlet air pressure of 9 bar, cold air mass ratio of 0.7, and air-to-water mass ratio of 9. The corresponding energy consumption was found to be 25.9 kWh/m3. The production rate can be increased up to 75.2 kg/h and the specific energy consumption can be reduced to 13.3 kWh/m3 when three MD stages were connected in series using the same single vortex tube at the same operating conditions. It is found that the cold fraction plays an important role in the balance between heating and cooling operations. In addition, cold fraction values smaller than 0.7 should be avoided to prevent water from freezing inside the membrane. Full article
(This article belongs to the Special Issue Desalination Technologies and Renewable Energy Sources)
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