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Wave and Wind Renewable
The PSP forms an essential offshore floating support base for the “Rho-Cee” WEC and can simultaneously provide a stable supporting platform for, and ready maintenance access to, both large offshore Wind Turbines and submerged Ocean Current Turbines.
Why Wave and Wind Together?
WindSpeed The power potential of the offshore wind is matched, or even exceeded by the ocean wave power generated by that same wind. Further, wave energy often arrives from remote locations independently of local wind. Therefore it is clear that offshore energy concepts combining wind and wave harvesting facilities will be economically advantageous, particularly if sharing capital-intensive support structures and labor-intensive infra-structures
 
“Rho Cee” Wave Energy Converter
WindSpeed
The Rho-Cee is integrated with Float’s Pneumatically Stabilised Platform (PSP) to take advantage of controllable stability, load capacity and the deck area that it provides.
  • “ρc” Wave Energy System – is an Impedance-Matched Oscillation Water Column (IM-OWC) system
  • Moored in deep water.
  • Constructed in reinforced concrete.
 
How it works
WindSpeed It is the base principle of the WEC design that its input impedance matches the characteristic impedance of the targeted waves.
 
Economy of Power Production is achieved by:
  • Maximum wave-to-wire efficiency
  • Reduced O&M costs due to ease of maintenance and relatively benign equipment environment
  • Small annual amortization cost due to very long useful life: > 50 years
  • Ancillary uses of the associated floating real estate
We are now examining a potentially more efficient and economical process involving long-stroke hydraulic cylinders with accumulators, hydraulic motors and controls (all COTS equipment). More direct, electro-mechanical take-offs are also on the table.
 
“Rho Cee” Test
The U.S Minerals Management Service (MMS) is collaborating with research institutions and industry on testing wave and current energy system. The submission of a white paper on “Rho-Cee” and the PSP, in response to a request from MMS, won for Float Inc. a week’s free testing at this enormous New Jersey facility.
WindSpeed
 
Test Objectives
  • To verify the impedance-matching basis of the Rho-Cee WEC concept and design.
  • To reveal any discrepancies between performance expectations and observations so that they may be diagnosed, remedied and be subjected to further experimental verification.
  • To provide a graphic demonstration of Rho-Cee WEC performance and that of its associated Pneumatically Stabilized Platform (PSP) in the wave environments of its intended installations – yielding presentation materials suitable for promotion of the concept program.
 
WindSpeed The Float Incorporated “Rho-Cee” Wave Energy Converter (WEC) is here being installed for test at the Ohmsett facility of the Minerals Management Service, U. S. Dept. of the Interior. Shown is a model at approximately 1/6th of prototype size (depending on full scale’s location).
 
The design for Ohmsett
WindSpeed In December 2009, Float Incorporated designed two resonant columns Rho-Cee instead of three for application at the Ohmsett facility.
 
WindSpeed
 
Test results
WindSpeed Analysis of test results is ongoing at this time
Indication that 93% of incident power in the best case has been absorbed in one test case- which is very encouraging
The development and test program continues…
 
 
We are engaging in the preliminary engineering development of an Offshore Security Port concept in support of Lawrence Livermore National Laboratory’s "Portunus" project.  
 
Conceptual design, costing and performance modelling and testing of offshore floating platform systems based on the Pneumatically Stabilized Platform (PSP)  
 
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4903 Morena Boulevard,
Ste. 1213, San Diego,
CA 92117

 
Float Incorporated
4903 Morena Boulevard, Suite 1213, San Diego, CA 92117
+1 858 866-0816 or projects1@floatinc.com
Copyright 2011 Float Incorporated. All rights reserved.