239 



DATE: FEBRUARY 1979 



TEST FACILITY; LOL 



MODE SCALE: 1/100 



DRAFT: 



7 '8 9 )0 n 12 13 U 



FULL SCALE WAVE PERIOD (S) 



Fig. 11 Preliminary Model Test Results 



will permit the efficiency to remain relatively flat over an octave variation 

 in vave period from the design wave period. System efficiencies of 25% to A57o 

 are expected. 



Each full scale unit, 80 meters in diameter, is expected to generate one 

 to two Mw of electricity, depending upon the input wave energy. The system is 

 omnidirectional and utilizes wave energy regardless of the relative direction 

 of the approaching wave. 



Concrete and steel are two candidate materials for full size units. Cost 

 of installed units Is estimated to be a few million dollars, such that we 

 believe a cost competitive number of about $3,000 per Kw can be attained in 

 areas with large wave energy resources. As with any solar energy system, the 

 initial cost Is high compared to a fossil fuel plant, but an overall savings 

 is realized because of the free solar fuel. 



Now that a proof-of-concept model has been built and tested, our program 

 plan specifies two additional, larger models. A fixed 1/50 scale model with 

 design refinements we now know can provide good quantitative data. The 1/25 

 scale model would be floated to obtain open ocean dynamic data. Data from 

 these 2 models would then be used to design a unit to be tested in the ocean. 

 The open ocean demonstrator should be at least 1/10 scale, and it would be 

 desireable and most Interesting if It were as big as 1/2 scale. Assuming 

 success at each stage in the development program, full size DAM-ATOLLS could be 

 operational In the 'SO's. 



Subsequent to our press releases made at the time the patent award was 

 announced in May 1979, we have received numerous expressions of Interest in the 

 DAM-ATOLL potential throughout the world. We are optimistic that DAM-ATOLL 

 will prove to be cost-competitive and a benefit to mankind. Additional benefits 

 of coastal protection and harbor formation could benefit less-developed countries 

 as well as others. 



