ABS: Approval in Principle for Floating Renewable Energy Plant

(Press Release)
Wednesday, August 17, 2011

ABS has issued its first Approval in Principle (AIP) for a new concept renewable energy design in which a moored spar uses ammonia in a closed-cycle process to produce electrical power for a commercial utility grid. Unlike wind, tidal or solar power the advanced design for this Ocean Thermal Energy Conversion (OTEC) system can deliver constant output 24 hours a day. “This concept combines proven offshore principles with off-the-shelf power, technology and proprietary innovations, all assembled in a unique way,” says Ian Simpson, ABS Director of Offshore Technology and Business Development, Americas Division. “The design application illustrates how ABS is able to use its novel concept approach and guidance to provide review of a concept within the framework of established safety standards.”

Developed by OTEC International (OTI) LLC of Baltimore, Maryland, the approach converts liquid ammonia into gas in a heat exchanger using warm ocean surface water. The ammonia gas then drives turbines that turn generators to produce electricity which is then exported through a submarine power cable to a land-based utility company. The ammonia is condensed back into a liquid phase using cold ocean water pumped from 3,000 feet below the water’s surface and the process begins again. The process is based upon the well-established thermodynamic Rankine cycle.

“OTI has integrated the OTEC power block into a large floating vessel, in this case a spar, for an economically and environmentally-efficient means of converting solar energy from the tropical oceans into affordable electricity,” explains Barry Cole, OTI’s Executive Vice President and Director of Technology Development.

Key elements evaluated by ABS include: spar hull sizing for the deep draft spar design; energy conversion equipment located in the spar; handling and storage of hazardous materials; deepwater mooring system; cold water pipe conduit suspended from the base of the spar; construction and attachment of the cold water pipe conduit; and power transmission cable with its securing, anchoring and suspension arrangements. ABS reviewed the design for an extended 30-year facility on-station life.

ABS has issued Approval in Principle for both the 25MW and 100MW designs; OTI could be eligible for ABS’ class notation A1, Floating Offshore Installation (FOI) Spar, SFA(30).

 

Maritime Reporter September 2014 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

Technology

NMEA Awards Top Electronic Makers

Marine electronics experts named 11 products in nine categories as winners of the 2014 NMEA Product Awards. Once again, Furuno USA was named Manufacturer of the Year--Support.

Maritime Broadband Opens Office in Greece

Maritime Broadband has expanded its worldwide footprint by opening an office, Maritime Broadband Hellas, in Athens, Greece. The new office addresses the growing

Statoil: New Oil in the Grane Area

Statoil has together with PL169 partners proved new oil resources in the D-structure in the vicinity of the Grane field in the North Sea.   Well 25/8-18 S, drilled by the rig Transocean Leader,

 
 
Maritime Careers / Shipboard Positions Maritime Contracts Maritime Security Naval Architecture Navigation Port Authority Salvage Ship Repair Ship Simulators Shipbuilding / Vessel Construction
rss | archive | history | articles | privacy | terms and conditions | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.1094 sec (9 req/sec)