A comparative study of energy performance of hydrostatic seafloor sediment samplers and a new high-efficiency sampler. (February 2019)

• Record Type: Journal Article
• Authors: Tang, Guoyuan; Wang, Jianjun
• Is Part Of: Applied ocean research. Volume 83(2019)
• Page Start: 1
• Page End: 8
• Publication Date: 2019-02
• Subjects: Seawater hydrostatic energy -- Seafloor sediment sampler -- Energy conversion efficiency; Ocean engineering -- Periodicals; 620.416205
• DOI: 10.1016/j.apor.2018.12.005
• Languages: English
• ISSNs: 0141-1187

Abstract

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.