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http://dx.doi.org/10.7846/JKOSMEE.2015.18.1.22

Design of Riser in 1MW OTEC system mounted on Floating Barge  

Kwon, YongJu (Korea Research Institute of Ships & Ocean Engineering(KRISO))
Jung, DongHo (Korea Research Institute of Ships & Ocean Engineering(KRISO))
Kim, HyeonJu (Korea Research Institute of Ships & Ocean Engineering(KRISO))
Publication Information
Journal of the Korean Society for Marine Environment & Energy / v.18, no.1, 2015 , pp. 22-28 More about this Journal
Abstract
The design on a riser in 1MW OTEC system is performed. The minimum diameter of the riser is decided depending on intake quantity of deep-sea water to supply an OTEC cycle. An applicable pipe material is selected from analyzing the properties of commercial pipes. The selected HDPE pipe with the low density and strength is reinforced with a lumped block attached at the end of and wire ropes along the riser. A lumped block, connected to a floating structure by wire ropes, with 25% and 50% weight of a GFRP riser is designed to be attached the end of a riser. The structural safety of the HDPE riser with wire rope supporting axial loads induced by a lumped block is analyzed under the harsh ocean environmental condition near Hawaii ocean with the numerical method. The final dimension of the riser and accessories is determined considering the economic point of view. The designed riser will be applicable to the construction of the 1 MW OTEC pilot plant.
Keywords
Riser; 1MW OTEC; Conceptual design; Numerical analysis;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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1 API, Recommended Practice 2RD, 2009, "Design of Risers for Floating Production Systems (FPSs) and Tension-Leg Platforms (TLPs)".
2 Cowle, M., Samaras, V. and Rauen, W.B., 2012, "A comparative analysis of the carbon footprint of large diameter concrete and HDPE pipes", Plastic Pipes XVI, Barcelona, September, 2012.
3 Jung, D.H., Kim, H.J., Lee, H.S. and Moon, D.S., 2013, "Concept design of a riser for 10 MW OTEC", Proceedings Ocean Engineering and Technology 2013 spring conference, pp. 2167-2170.
4 Kim, H.J., Lee, H.S., Jung, D.H., Moon, D.S. and Hong, S.W., 2011, "Implementation Plan to Commercialize OTEC Power Plant", Proceedings Korean Society for Marine Environmental Engineering 2011 fall conference, pp. 233-240.
5 Kim, J.H., Kim, G.T., Park, S.H., Oh, W.Y. and Kim, H.J., 2012, "A Feasibility Study on Thermal Energy Resource in Deep Ocean Water", Journal of the Korean Society for Marine Environmental Engineering, Vol. 15, No. 1. pp. 9-18.   과학기술학회마을   DOI   ScienceOn
6 KRISO, 2003, "Korea-India Joint Research for Ocean Renewable Energy Development".
7 Locked Martine, 2010, "NAVFAC OTEC System Design Report", CDRL A003, Lockheed Martin MS2.
8 Vega, L.A., 2003, "Ocean Thermal Energy Conversion Primer", Marine Technology Society Journal, Vol. 6, No. 4, 25-35.
9 Vega, L.A. and Michaelis, D., 2010, "First generation 50MW OTEC plantship for the production of electricity and desalinated water", OTC20957.
10 Vega, L.A. and Nihous, G.C., 1994, "Design of a 5 MWe OTEC Pre-Commercial Plant", Proceedings Oceanology International '94 Conference, Brighton, England, March 1994.