Solar Panels Could Make Saltwater Safe for Farming

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Solar Panels Could Make Saltwater Safe for Farming

Beitragvon JefferyNaf » 13. Juli 2019, 23:30


The need to combine water purification through clean means is a growing one, giving the rise in man-made climate change. Water scarcity is increasing throughout a variety of places on the planet, from South Africa to India. "The water-energy nexus is one of the main issues threatening sustainable global development," says Wenbin Wang, a Ph.D. student at the University's Water Desalination and Reuse Center, in a press statement.

To combat the problem, the KAUST team looked at solar panels holistically. Silicon solar panels take in around 20 percent of the light they absorb, converting them into electricity. While that number is increasing, scientists predict that no photovoltaic (PV) panel will be able to absorb more than around 27 percent of the light. That leaves a significant amount of light being reflected, which generates heat.


"The PV panel generates a lot of heat, and the heat is considered a headache in PV,” Wang tells Cosmos. "The uniqueness of the device lies in its smart and effective use of the waste heat of the PV as a resource, which leads to its high efficiency in both electricity and fresh water production."





The next step for the team is to try and expand its project to the extent that it would be viable for agriculture. Many innovations in agriculture, like vertical farming, attempt to save water. Being able to use saltwater for farms could radically change how water is consumed around the world. In the U.S. alone, farming represents approximately 80 percent of the country's consumptive water use.

"Raising sheep in the field of PV farms is feasible because grass grows well using the fresh water from solar-panel washing," Wenbin says in the press statement. "A PV farm with sheep grazing while seawater is desalinated using our device could be ideal in arid regions near the coast."

(catalog printing printing in China).
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