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Large Scale Ocean Based Ice Structures for Habitats, Storm and Flood Protection, and Industrial, Energy, and Transport Applications

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2 Author(s)
Powell, J.R. ; Plus Ultra Technol., Shoreham ; Powell, J.D.

A new approach, for large ocean structures, termed LISA (large ice structure assemblies) is proposed. Thermally insulated LISA ice structures can be used for a wide variety of applications, and can be constructed and maintained for many years at low cost. Three types of LISA structures are described: LISA-1 floating platforms for off-shore airports, habitats, industrial and power plants, drilling rigs, etc.; LISA-2 fixed structures in shallow waters for levees and dikes to protect coasts against storms and rising ocean levels; and LISA-3 submersibles for the long distance transport of large amounts of fresh water and other materials. LISA structures can be very large, multi- kilometers in lateral dimensions. Using conventional materials for thermal insulation, thermal leakage into LISA's-30degC ice interior is on the order of 1 watt(th)/per m2 of surface area, with annual refrigeration costs of less than $1 per m2. LISA structures can be constructed at their operating site, or at a different location and towed to their site. Methods of construction are described. Construction at high latitudes using low ambient temperatures for refrigeration is possible, and enables very low construction cost.

Published in:

OCEANS 2007

Date of Conference:

Sept. 29 2007-Oct. 4 2007