Abstract
Solar desalination is a process to convert saline water into potable water by the application of solar energy. The enhancement of the distillate output of the solar desalination is low, so it is not considered as a method to produce potable water. A heat exchanger is an important device used for heat transfer applications. The present review article illustrates the application of a heat exchanger with a solar desalination system to enhance the distillate output. In the current review, it is found that the heat exchanger is an important device to improve the distillate productivity of the solar desalination system. Finally, the future work and future challenges of using a heat exchanger with a solar desalination system are presented.
Highlights
The potable water scarcity problem worsens day by day due to various applications such as drinking, industrial applications and many more [1]
With the help of a heat exchanger, external hot water is supplied, so the temperature difference will be higher compared with the conventional solar still, and so distillate productivity and efficiency are increased
The present review article shows the application of heat exchangers to enhance the distillate output of solar desalination systems
Summary
The potable water scarcity problem worsens day by day due to various applications such as drinking, industrial applications and many more [1]. Many researchers have used different methods to lower the heat loss and increase the productivity of solar stills [15–17] They used various techniques such as changing the configuration of the still, changing the solar still design, using a different absorbing material, or introducing components such as flat plate collectors, fins, evacuated tubes, etc. Badran and Tahaineh [27] used a flat plate collector (FPC) They achieved a 36% higher efficiency compared to a conventional solar still by preheating the water to enhance distillate productivity. Shah [38] experimented on a double-slope-type solar still with evacuated tubes and energy storage materials They found that a minimum 2 cm basin water depth led to the optimum performance of the solar still. The current issues and future challenges of utilizing a heat exchanger with solar desalination are reviewed
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