Section of Notional “Rho-Cee” WEC for Portugal Reinforced concrete structure Dimensions in feet...
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Transcript of Section of Notional “Rho-Cee” WEC for Portugal Reinforced concrete structure Dimensions in feet...
10'
20'
30'
10'
20'
WL
PSP
0
0 20' 40'WL
10' 30'
Section of Notional “Rho-Cee” WEC for Portugal
Reinforced concrete structure
Dimensions in feet
Resonant Center Periods
5.2 sec (42m)
6.9 sec (74m)
8.8 sec (121m)
Composite concrete floats
Hydraulic power take-off
Cylinder support structure TBD
28 kW/m average output
60 kW/m (?) rating
Blue Tech & Blue Economy Summit
~1/6th scale “Rho-Cee” being prep’d for absorption test at Ohmsett facility
Blue Tech & Blue Economy Summit
Generic ρC – Scalable: L ~ T2
Three one/third Octave Bands dimensions in feet
Blue Tech & Blue Economy Summit
Incident Energy Spectrum for Rayleigh Distributed Wind P-M Spectra
with a Candidate 3/3 Octave Pass Band
0
20
40
60
80
100
120
140
3.2 4.0 5.0 6.3 8.0 10.0 12.5 16.0 20.0 25.0 32.0 40.0
1/3 OB period, sec.
1/3
OB
MW
-hr/
m-y
rBlue Tech & Blue Economy Summit
Yearly Cost Function – very preliminary
$/m = 2400 + 2500 [ 17.07(Tm/Tr)4 +
38.25(Tm/Tr)2 ] x 0.08 +1500*kW x 0.133
maintenance
PTO @ 5.5% for 15 yrs for average
input power Tm, max band period
Tr, ref T, here 12.5 sec
PTO & WEC structure alone
$/m3 reinforced concrete structure bulkheads
partitionsstructure @ 5.5%
for 20 yrs
Blue Tech & Blue Economy Summit
Cents per kW-hr vs Max Period for Various BWs
1.0
10.0
100.0
1 10 100
Acceptance Band Upper 1/3 OB Period, sec
Ce
nts
/kW
-hr
3/3 OB
4/3 OB
5/3 OB
cost includes: Rho-Cee structure, power take-off, maintenance
70% PTO Efficiency
Blue Tech & Blue Economy Summit
Waves, Wind ± 60°
calm
calm
Extending the Wind Turbine support provided by the PSP“span”: 1040m; WT spacing: 200m (extendable-leeward); rotor diameter: 90m; ρC length: 1200m
WT rating: 3MW; ρC rating: 30kW/m; 200m dock; struts: 200m x 15’ concrete culvert pipe, w/rails
estimated total “foundation” cost: $1677/kW
Total Power Rating: 72MW WAG Total Cap Cost Est: $300M
PE Storage: ~12MW-Hr, cold
ρC / PSP
Blue Tech & Blue Economy Summit
~0.8 LMi
~1 km
A Possible Arrangement of 3 - 1km floating Rho-Cee WEC Breakwaters to
Protect the Columbia River
Bar Passage(subject to many considerations)
(Note: The scale on the chart appears bogus!)
Produced energy to pay for the project !
Blue Tech & Blue Economy Summit