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Really Big Balloons

Really Big Balloons. Joe Van Ryzin Makai Ocean Engineering, Inc. Towed steel structure?. Steel structure pre-fabricated in modules Assembled in deep water Filled with special water – offsets weight of steel. Not fresh. Tow to site and submerge.

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Really Big Balloons

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  1. Really Big Balloons Joe Van Ryzin Makai Ocean Engineering, Inc. Makai Ocean Engineering

  2. Makai Ocean Engineering

  3. Makai Ocean Engineering

  4. Makai Ocean Engineering

  5. Towed steel structure? • Steel structure pre-fabricated in modules • Assembled in deep water • Filled with special water – offsets weight of steel. Not fresh. • Tow to site and submerge. • Expensive – and forced to transport you water to the site in an inefficient structure Makai Ocean Engineering

  6. Towing Makai Ocean Engineering

  7. Fresh Water Problems • Anchoring is expensive • Must deliver weight (in either anchor, salt or whatever) anyway • Buoyancy within sphere, because of diameter, is a significant structural problem for fabric balloon. • Any leak – serious problem Makai Ocean Engineering

  8. Alt: deliver special salt and fresh water • Reduce balloon costs by perhaps 90%, keep buoyancy to 0.1% of that of fresh water (300 tons, more then enough). • Deploy concrete-weighted balloon just slightly negative – use fresh water to offset anchors. • Deliver to site: special salt. • Produce fresh water at site with RO • Pump mixed solution to bottom through long HDPE pipeline. Makai Ocean Engineering

  9. Mini OTEC • First Hawaii deep water pipeline • HDPE • Flexible mooring and intake pipe Makai Ocean Engineering

  10. Delivering Fresh Water 5 km long HDPE pipe assumed. 30” pipe reusable – estm $10m Makai Ocean Engineering

  11. Deliver Salt to Site Makai Ocean Engineering

  12. Prelim conclusions • Fresh-water filled not a good idea • steel structure: no cost advantage and have serious deployment issues. • Need to transport water in any case: cheaper to make on site • Fabric balloons are workable structure. • Fabric balloon deployed empty, deliver salt and produce fresh water at site to fill balloon over several trips. Makai Ocean Engineering

  13. Prelim wild guess • Fabric balloon: $56 million • Anchoring: $5 million • Salt and water delivery: $42 million • General deployment: $15 million • Total: $118 million?? Makai Ocean Engineering

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