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MHK Technologies/Deep Water Pipelines
Date Submitted 2014/03/27  +
Depiction File:55inch.png  +
Designed to Operate with Shore Connection? Yes  +
Distance from Shore (m) 1km to 6km  +
Do Records of Operation of System Prove Reliable Performance? Yes  +
Full-Scale Test This technology has been demonstrated at the commercial scale.  +
Have Key Components Been Fabricated and Tested in the Lab? Yes  +
If Yes, Please Explain NELHA has the best operational database fo
NELHA has the best operational database for deep water pipelines. In 2012-2013 NELHA hired Makai, Global Diving and Healey Tibbits to repair the 40" diam pipe which was properly installed. It had served in continuous operation for 26 years (with a design life of 10 years).
26 years (with a design life of 10 years).  +
Number of Devices Sold 10+  +
Primary Organization Makai Ocean Engineering Inc +
Project(s) where this technology is utilized MHK Projects/OTEC +
Relevant Technical Publications  +
Technology Description Makai has designed and installed numerous
Makai has designed and installed numerous deep water intake pipelines for OTEC (power generation) and Seawater Air Conditioning (cooling) applications. There are four pipelines supplying deep cold water to Makai's Ocean Energy Research Center and the rest of the Natural Energy Lab of Hawaii Authority (NELHA) in Kona, Hawaii: Diameter Date Flow Intake Depth 12 inch 1980 1,200 gpm 500’ 18 inch 1987 3,000 gpm 2,100’ 40 inch 1987 13,400 gpm 2,200’ 55 inch 2001 27,000 gpm 3,000’ In 1979, the world's only net-power generating OTEC plant used a Makai design for the pipeline and mooring system. Makai performed significant work on: - 8 ft DoE pipeline in 1980s. - India OTEC pipe concept design in 1999. - Developed pipe handling apparatus for novel OTEC Cold water pipe concept developed by Lockheed Martin - Related technology of SeaWater Air Conditioning has resulted in five other subsea pipelines for Cornell University, a resort in Bora Bora, and Toronto replacing 80 MW of electrical power formerly used to power conventional AC systems.
rly used to power conventional AC systems.  +
Technology Readiness Level TRL 5/6: System Integration and Technology Laboratory Demonstration  +
Technology Resource Ocean Thermal Energy Conversion (OTEC)  +
Technology Type Closed-cycle  +
Was This Project DOE Funded? No  +
Categories Marine and Hydrokinetic Technologies
Modification date
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01:55:45, 28 March 2014  +
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MHK Projects/Modeling the Physical and Biochemical Influence of Ocean Thermal Energy Conversion Plant Discharges into their Adjacent Waters + ProjectTechnology
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