Water desalination by solar energy

Order Your Groceries Online And Pick Up At Your Local Walmart. Good Price on Water Desalination Truste Audited China Suppliers. How can solar energy be used in water desalination? Why do we need solar desalination?

Is desalination a clean drinking water? How much does a water desalination plant cost?

Sunlight may provide heat for evaporative desalination processes, or for some indirect methods, convert to electricity to power a membrane process. Special methods and types used in solar desalination are introduce providing new thoughts, concepts, and feasible solutions in the desalination fiel along with the thermal and economic efficiency relating to current technology. Seawater is becoming a critical resource as global freshwater supplies come under increasing stress, but conventional desalination is an expensive, energy -sucking process.

Water gained from a desalination plant often ends up back in the Ocean as waste water so the Ocean levels would not be affected very much. For what you want to do would be far too expensive for any country to undertake. Hi Scarlet John, Indee solar desalination is a rapidly developing fiel and there is plenty of interest in coastal countries with ample solar resource and scarce amounts of freshwater (for example Gulf states). Solar Powered Desalination.

The water is basically distilled using direct heat from the sun, which means that only relatively simple infrastructure is needed.

As mentioned above, solar distillation is separation of clean water by vaporization. Desalination refers to the process where salt and other minerals are removed from water. While heat is necessary for distillation of water , electrical or mechanical driven systems can use reverse osmosis to desalinate water.

Modular, off-grid desalination technology could supply families, towns. A federally funded research effort to revolutionize water treatment has yielded an off-grid technology that uses energy from sunlight alone to turn salt water into fresh drinking water. In conventional membrane distillation (top), hot saltwater is flowed across one side of a porous membrane and cold freshwater is flowed across the other. Water vapor is naturally drawn through the membrane from the hot to the cold side.

Abstract Throughout the worl there are regions of vast extent that have many favorable features, but whose development is principally limited by the lack of fresh water. And what potential exists globally for the technology? There are two broad categories of desalination technologies.

Thermal desalination uses heat to vaporise fresh water , while membrane desalination. The salt water , which is displaced upwards in periods with sufficient renewable energy sources, is stored inside the elevated water buffer. For periods with limited renewable energy sources, in case of solar panels when thick clouds cover the panels or during the nights, the water buffer will provide the required pressure to drive the water treatment.

The technical and economic feasibility of the scheme has been studie and the thrust has been to present an overall objective rather than detailed design and cost calculations. Conventional desalination is based on reverse osmosis technology, which involves forcing water through a membrane at high pressure. The high energy intensity of the process can be alleviated.

The level of water desalination in the United Arab Emirates (UAE) is one of the highest in the Middle East and North Africa, hovering at around percent.

Renewable energy commonly considered for desalination are solar , wind and geothermal and among these solar energy occupies nearly of renewable energy based desalination market. Maybe as a side-effect of this more “civilized” form of producing energy and water , we will also – like our ancestors – find another, more developed social structure, maybe a more cooperative and peaceful one. Industry leaders in Saudi Arabia, Abu Dhabi, and Chile are.