Hydrolysis-driven propulsion system for submersibles - Borchsenius, Jo
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The research presented herein intends to improve the flexibility of underwater gliders with the development of a novel propulsion system. The proposed Chemical Buoyancy Drive is indicated to yield up to 20 times the amount of available electric energy and exhibit 90% propulsion efficiency, compared to that of the commercial underwater glider Spray at a depth of 1,500 m. Its performance is readily optimised to any depth, and there is no need for a thermal incline in the operational environment. The need to isolate the energy storage from external pressure is eliminated by the use of lithium…mehr

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Produktbeschreibung
The research presented herein intends to improve the flexibility of underwater gliders with the development of a novel propulsion system. The proposed Chemical Buoyancy Drive is indicated to yield up to 20 times the amount of available electric energy and exhibit 90% propulsion efficiency, compared to that of the commercial underwater glider Spray at a depth of 1,500 m. Its performance is readily optimised to any depth, and there is no need for a thermal incline in the operational environment. The need to isolate the energy storage from external pressure is eliminated by the use of lithium hydride suspended in slurry, which is reacted with seawater to generate hydrogen. The subsequent increase in volume results in propulsion through the induced hydrodynamic forces on the hull, and the hydrogen can be consumed in a fuel cell providing electric energy. A prediction of the drive s performance to 10,000 m depth is presented. This has been verified through the developed experiments toan equivalent of 3,000 m. The proposed Chemical Buoyancy Drive could be a competitive alternative to the propulsion of underwater gliders and other autonomous underwater vehicles.
Autorenporträt
Jo Borchsenius obtained a Master of Engineering in 2011, and holds degrees in Material Science and Mechanical Engineering. He is a Mechanical Specialist at Aker Clean Carbon AS working with carbon capture and storage, and is experienced in the engineering and manufacturing of offshore drilling equipment.