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Solar-powered water desalination tech for off-grid applications – pv magazine International


Berlin-based Boreal Mild is creating PV-powered water desalination expertise for off-grid functions. The answer makes use of a 460 W photo voltaic panel from Chinese language module producer DAH Photo voltaic and produces clear water from direct seawater at a value of €0.50 ($0.54)/cm3.

Boreal Mild, a German expertise firm, has developed a PV-powered water desalination machine for off-grid functions.

Winture Planet Dice machines have capacities from 1,000 liters per hour to 50,000 liters per hour. The dimensions of the photo voltaic array wanted to energy these machines is a operate of three issues: their capability, the salinity of the water, and the depth of the borehole from which the water is drawn. The expertise makes use of seawater, wastewater, brackish water, or floor space as inputs.

“On common, a machine of two,000 liters per hour requires a PV array with an put in capability of 11 kW, for a lot of the tasks we do in Sub-Saharan Africa,” Hamed Beheshti, CEO of Boreal Mild mentioned. pv journal. Different tasks embrace a 15,000 liter per hour machine in Iraq utilizing a 90 kW PV system.

Boreal Mild leverages photo voltaic arrays to keep away from the necessity to use batteries.

“We oppose the usage of batteries as a result of it brings a whole lot of further prices, transportation, and upkeep. As an alternative of storing electrical energy from photo voltaic panels, we produce a whole lot of water and retailer it – it is less expensive,” mentioned Beheshti . “The engine within the Iraq mission, for instance, required a most of 49 kW of electrical energy.”

Extra water is usually used for fish farming, irrigation, and sanitation. The corporate additionally makes use of extra electrical energy for charging electrical cargo bikes used to distribute water, and for charging battery banks in close by faculties.

The answer makes use of a 460 W monocrystalline silicon PV panel from DAH photo voltaic. The water desalination machine makes use of a low-pressure reverse osmosis membrane that has a lifetime of three to 5 years and is constructed for as much as 25 years, based on Beheshti. Their manufacturing value of water from direct sea water is €0.50/cm3. For brackish water, the value drops to €0.28/cm3. Relying on the capability, the machine can value from €20,000 to €1 million. The corporate’s purchasers vary from help organizations and NGOs to companies, farms, and hospitals.

The Winture Planet Dice is related to the web through a SIM card, which permits Boreal Mild to carry out distant monitoring and management of the machines from Berlin.

“We are able to learn 36 sensors on the machines from Berlin. We are able to additionally place orders and replace machine software program with one click on. Such distant management for us is about making the operation easy in distant elements of the world,” says Beheshti.

The corporate claims that 80% of engine upkeep might be accomplished by a regular plumber utilizing solely a wrench and screwdriver. It at present has tasks in 14 international locations throughout Africa, Southeast Asia, Latin America, and the Center East.

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