Design optimization of floating structure for a 100 MW-net ocean thermal energy conversion (OTEC) power plant

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Abstract

This paper presents a design procedure based on optimization to contrive a floating structure for a commercial scale of OTEC power plant. In the aim to get a safe yet economical floating structure, a commercial oil tanker ship was converted as the plantship. The process was started by defining independent variables, constraints and fix parameters. The independent variables included the velocity of seawater transport and type of oil tanker ship. The next step was breaking down the fix parameters which were kept constant during the iteration process. These parameters were about the general requirements and the necessary equipment to produce 100 MWnet power output. Some constraints were also introduced as permissible borders to determine whether the particular case was acceptable or not. The constraints included the constraint due to provided space, allowed weight, net power output and fluid phenomena on the riser. During the iteration process, a spiral model was developed as analysis guideline. Based on the result of the optimization, it could be concluded that the typical Suez-max oil tanker ship was the best option and the most optimum seawater transport velocity was 3 m/s. Finally, the general arrangements and the base layout design were also conceptualized in this paper.

Original languageEnglish
Title of host publicationOcean Renewable Energy
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791851319
DOIs
Publication statusPublished - Jan 1 2018
EventASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2018 - Madrid, Spain
Duration: Jun 17 2018Jun 22 2018

Publication series

NameProceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE
Volume10

Other

OtherASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2018
CountrySpain
CityMadrid
Period6/17/186/22/18

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All Science Journal Classification (ASJC) codes

  • Ocean Engineering
  • Energy Engineering and Power Technology
  • Mechanical Engineering

Cite this

Adiputra, R., & Utsunomiya, T. (2018). Design optimization of floating structure for a 100 MW-net ocean thermal energy conversion (OTEC) power plant. In Ocean Renewable Energy (Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE; Vol. 10). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/OMAE2018-77539