A comparative study of energy performance of hydrostatic seafloor sediment samplers and a new high-efficiency sampler |
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| Institution: | 1. Mines Douai, LGCGE-GCE, F-59508 Douai, France;2. Univ. Lille, F-59500 Lille, France;3. LASIR UMR CNRS 8516, Univ. Lille 1 Sciences and Technologies, Villeneuve d''Ascq, France;1. Departamento de Biologia and CESAM, Centro de Estudos do Ambiente e do Mar, Universidade de Aveiro, Campus de Santiago, Aveiro 3810-193, Portugal;2. Marine Biological Section, Department of Biology, University of Copenhagen, Strandpromenaden 5, Helsingør DK-3000, Denmark;1. Department of Building Service Engineering, The Hong Kong Polytechnic University, Hong Kong SAR, China;2. South China University of Technology, School of Electric Power, Wushan RD., Tianhe District, Guangzhou, 510641, P.R. China;3. Faculty of Science and Technology, Technological and Higher Education Institute of Hong Kong, Hong Kong SAR, China |
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| Abstract: | The hydrostatic energy of high-pressure seawater is a renewable and green energy source for ocean exploration and have been used to replace underwater electrical energy transmission through the cable and underwater battery pack to power seafloor equipment. The advantage of the energy supply method is the cost-effective and the robustness. In the paper, the energy performance of the existing hydrostatic seafloor sediment samplers powered by seawater hydrostatic energy are modelled and analyzed and compared. In view of the common shortcoming of existing technology, a novel hydrostatic seafloor sediment sampler is proposed. The model of energy conversion of the new sampler is built, and its energy performance is obtained. The analysis results indicate that the energy conversion efficiency of the novel sediment sampler is much higher than the existing ones, which means that the new sampler can collect much longer sample with the limited amount of hydrostatic energy. The seawater hydrostatic energy conversion system of the new sampler can also be used to power other seafloor equipment. |
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| Keywords: | Seawater hydrostatic energy Seafloor sediment sampler Energy conversion efficiency |
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