A photovoltaic device comprising a photovoltaic cell is provided. The photovoltaic cell includes an emitter layer comprising a crystalline semiconductor material and a lightly doped crystalline substrate disposed adjacent the emitter layer. The lightly doped crystalline substrate and the emitter lay.....
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A process for two phase vacuum extraction of contaminants from the ground involves vacuum withdrawal of liquid and gaseous phases as a common stream, separation of the liquid and gaseous phases, and subsequent treatment of the separated liquid and gases to produce clean effluents. Two phase vacuum e.....
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By recovering nutrients from urine in small decentralized reactors, we developed a dry sanitation system, which is affordable, produces a valuable fertilizer, promotes entrepreneurship and reduces pollution of water resources.Stage of development : At usable levelProject Record: In Zurich at Eawag.....
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PORTABLE SOLAR LED LANTERN with Mobile Phone Charging Facility 9 to 10 hours of Light Multi pin Mobile Phone Charging Cord Dual Light Mode with 20 hours plus Night lamp Ambient Light Sensor 100 percent Portable with in-built PV Panel Backup AC Charging Facility 1 year Warranty See attached images fo.....
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A collective water pumping system for domestic use and/or irrigation purposes in areas with no grid power or erratic supply of power from grid. An array of solar panels connected in series and parallel configuration generates the power and voltage required for the ATV312 Solar unit to drive the moto.....
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