]Building a Better Wave Energy Machine: Can it Be Done?

AI Thread Summary
Modern materials and technology could potentially improve upon Salter's Edinburgh Duck, which is known for its efficiency in wave energy conversion, achieving 90% wave motion stoppage and electricity conversion in controlled tests. However, the Duck's complex hydraulic system has prevented it from being tested at sea, and the high costs and risks associated with full-scale implementation remain a barrier. Current wave energy designs are less effective, with lower Mass to Power Ratios compared to the theoretical maximum. Historical miscalculations regarding the cost of energy production from the Duck and a lack of support for renewable energy in the 1980s have also impeded progress in wave power technology. Overall, advancements in wave energy machines are possible but face significant challenges.
wolram
Gold Member
Dearly Missed
Messages
4,410
Reaction score
555
Would it be possible with modern materials and know how to build a better Duck?

http://en.wikipedia.org/wiki/Wave_power

His invention, Salter's Edinburgh Duck, continues to be the machine against which all others are measured. In small scale controlled tests, the Duck's curved cam-like body can stop 90% of wave motion and can convert 90% of that to electricity.[26] While it continues to represent the most efficient use of available material and wave resources, the machine has never gone to sea, primarily because its complex hydraulic system is not well suited to incremental implementation, and the costs and risks of a full-scale test would be high. Most of the designs being tested currently absorb far less of the available wave power, and as a result their Mass to Power Ratios remain far away from the theoretical maximum.

According to sworn testimony before the House of Parliament, The UK Wave Energy program was shut down on March 19, 1982, in a closed meeting,[27] the details of which remain secret. The members of the meeting were recruited largely from the nuclear and fossil fuels industries, and the wave programme manager, Clive Grove-Palmer, was excluded.

An analysis[28] of Salter's Duck resulted in a miscalculation of the estimated cost of energy production by a factor of 10, an error which was only recently identified. Some wave power advocates believe that this error, combined with a general lack of enthusiasm for renewable energy in the 1980s (after oil prices fell), hindered the advancement of wave power technology.[29
 
Last edited:
Engineering news on Phys.org
Hi all, I have a question. So from the derivation of the Isentropic process relationship PV^gamma = constant, there is a step dW = PdV, which can only be said for quasi-equilibrium (or reversible) processes. As such I believe PV^gamma = constant (and the family of equations) should not be applicable to just adiabatic processes? Ie, it should be applicable only for adiabatic + reversible = isentropic processes? However, I've seen couple of online notes/books, and...
I have an engine that uses a dry sump oiling system. The oil collection pan has three AN fittings to use for scavenging. Two of the fittings are approximately on the same level, the third is about 1/2 to 3/4 inch higher than the other two. The system ran for years with no problem using a three stage pump (one pressure and two scavenge stages). The two scavenge stages were connected at times to any two of the three AN fittings on the tank. Recently I tried an upgrade to a four stage pump...
Back
Top