fivemack: (Default)
[personal profile] fivemack
http://www.tridentenergy.co.uk/index.php

I don't quite understand how what these people are trying to do makes any kind of sense at all; their Web site looks like the write-up of a good A-level design technology project, and says in pieces dated February that they're about to start the test that clearly just failed to start in mid-September. The design seems to have a single guidance bearing taking all the sideways force of North Sea waves, held up on a remarkably flimsy-looking tower, and their prototype is made of eighty tons of steel and using four quite complicated linear generators to generate twenty measly kilowatts. I admit that I was slightly surprised that any marine engineers were involved in the endeavour at all.

What have I missed?

I'm sure it's unfair to compare the cost of tidal equipment to that of wind or solar; there's been, what, three orders of magnitude more money available for optimising wind and solar. But I can't help feeling there's a conclusion to draw from the fact that almost every story I read about wave power involves a wave-power demonstration, set up by a small company and producing less power than the smallest wind turbine Vestas will deign to sell, being destroyed by the wrath of Poseidon.

Date: 2009-09-22 02:43 am (UTC)
seawasp: (Default)
From: [personal profile] seawasp
In a reasonable sea state, waves generate considerable energy. Turning that energy into electricity has some interesting hurdles and limitations, unfortunately. Why some of the designs I've seen are being used... I don't know. There's designs I'd use for temporary power (I'm actually in the process of writing a proposal for just that purpose), but something that's meant to last for any length of time in the ocean? That's major engineering, and not something to be approached lightly.

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