the problem with harnessing energy from most ocean currents is due to the tidal shifts. A traditional turbine generator expects a somewhat constant flow, and that flow needs to be in 1 direction (IE: Hoover Dam). Ocean currents move fast, then slow down, then change direction, and repeat... not ideal for a turbine generator
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Thread: wind farms
Aug 1, 2008, 12:18 AM #21
Aug 1, 2008, 12:16 PM #22
- Join Date
- Aug 2007
- South Monmouth County
A big hurdle to tidal power is the amount of money that must be spent maintaining the machines. Salt water is corrosive and breaks down the parts very quickly. The expensive parts need to be replaced relatively often.
Also, there are environmental concerns with tidal energy because the blades/turbines could kill fish/whales/etc. If the blades/turbines kill an animal, it creates blood and chum, essentially, bringing more animals towards the blades. Those animals die and create more blood/chum, and pretty soon you have a sea creature massacre happening at those underwater turbines.
Aug 1, 2008, 12:24 PM #23
Aug 1, 2008, 12:26 PM #24
uh is any one concerned we may have a big swell filter on the outside of our lineups?????
Aug 1, 2008, 01:06 PM #26
Aug 1, 2008, 01:29 PM #27Member
- Join Date
- Jul 2008
Also the under water massacre made me laugh for a good 5 minutes, it didn't even occur to me that other things might want to use the water, lol.
Aug 1, 2008, 01:36 PM #28
as far as ocean currents go - this is way to small scale for it to disturb large scale ocean currents.
that would be like saying putting up a wind farm will change our weather patterns. Butterfly effect... sure.. everything has an influence, but we are talking minor. Every time we turn fields into parking lots, we influence climate, but that wont stop development.
i thought rightcoastsurfer3 was talking about blocking swells from reaching the beaches.
Aug 1, 2008, 02:27 PM #30
now that i think about it a little more, i'm thinking the mills will have to be moored to the bottom, so they dont float away. before, when we were discussing this, I was proposing maybe they are more or less floating on the surface, which wouldnt be a problem for swell blockage.
So, if they are moored, then I guess there will be some reflection of swells propagating towards the beach. However, we are only talking about a small window of beach that would be effected - so hopefully that window is not covering a good break... I dont think it will be too substantial of an influence.