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Tidal Turbines
#1004893
21st Mar 2016 3:23am
21st Mar 2016 3:23am
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Joined: Jul 2008
Posts: 13,881 Birkenhead
diggingdeeper
OP

Wiki Master
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OP

Wiki Master
Joined: Jul 2008
Posts: 13,881
Birkenhead
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At last after years of money being thrown away on wind power it looks like Tidal Turbines are making progress with a few planned to come online in the next few years. Tidal Turbines have loads of advantages over wind farms including the most important one - they are cost effective. Hopefully the government will see sense and promote this technology and dump their idiotic plans for nuclear and wind power altogether. Liquid Air Energy storage is also making great progress, power storage is an essential part of any non-continuous power source such as wind, tidal or solars. CLICKY
The further you are down the pay scale, the more 'essential' you are when the s--- hits the fan... Sue Farbysmith 2020
Insults are engendered from vulgar minds, like toadstools from a dunghill - Charles Caleb Colton
We don't do charity in Germany, We pay taxes. Charity is a failure of governments' responsibilities - Henning Wehn
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Re: Tidal Turbines
[Re: diggingdeeper]
#1004903
21st Mar 2016 8:48am
21st Mar 2016 8:48am
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Joined: May 2011
Posts: 946 Greasby
Greenwood
Guardian
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Guardian
Joined: May 2011
Posts: 946
Greasby
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I'm amazed that we are not further forward in this - as our islands are surrounded by the sea, and the tides - unlike wind or sun - are utterly reliable, it's a no-brainer for power generation for the future. There have been several small-scale trial projects, my favourite being the Pelamis which minimises the risk of mincing marine wildlife, as the rocking motion of the waves acting on the hinged units creates the movement that drives the turbines. The units are sealed, unlike tidal barrage systems through which the water has to pass. Bring it on, I say! The sea has protected and sustained us for so long - this is another way it can help us. Edit: I just checked on Pelamis and it seems the developing company went into administratin as of end 2014. Argh! That is a real shame. We need someone very rich to take up the baton on this, I think. Won't be me... *sigh*
Last edited by Greenwood; 21st Mar 2016 8:54am.
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Re: Tidal Turbines
[Re: diggingdeeper]
#1005012
22nd Mar 2016 12:13am
22nd Mar 2016 12:13am
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Joined: Jan 2010
Posts: 1,759 wirral
Excoriator
Forum Addict
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Forum Addict
Joined: Jan 2010
Posts: 1,759
wirral
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The Pelarmis was for wave energy rather than tidal energy.
I don't think there is any chance of tidal turbines mincing anything, by the way. They rotate quite slowly and are much smaller than windmills so the tip speed is lower and it is easy for any fish to avoid with ease. The fact that you cannot fish anywhere near them means that they could actually provide breeding sanctuaries for fish, something which we need if overfishing doesn't scoop up the lot!
Land based windmills, by the way, produce power at more than competitive cost. A 3MW machine these days costs about £2 million. It will produce - on average - about 1MW or 24,000 kWh a day. That's about 220 million kWhs over a working life of 25 years, so the cost is under a penny a unit. Maintenance costs are negligible. That's cheaper than fossil or nuclear, even if you ignore the cost of pollution or care of nuclear waste.
There is another benefit of wind energy which is rarely mentioned. And that is the short time it takes before they start generating a cash flow. A windmill can be installed in weeks. Hinkley will take a decade or two before a single joule is produced, during which a massive cost is incurred.
The UK's first floating offshore wind farm is now being designed and built in Scotland. It is possible these will reduce the cost of offshore wind to something comparable to onshore wind power, but that remains to be seen. I notice that the developers are proposing a Li-ion battery in order to save unwanted output from the windmills so it is a most interesting project altogether.
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Re: Tidal Turbines
[Re: diggingdeeper]
#1005014
22nd Mar 2016 5:27am
22nd Mar 2016 5:27am
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Joined: Jul 2008
Posts: 13,881 Birkenhead
diggingdeeper
OP

Wiki Master
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OP

Wiki Master
Joined: Jul 2008
Posts: 13,881
Birkenhead
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I don't know who dreamt up offshore wind generation, total madness.
Onshore wind has very few suitable sites to achieve the 30% capacity figures. Excessive turbulence, excessive windspeed, omni-directionality, space requirements and aesthetics all play a part in reducing the viability of sites but as it will become the cheapest source of electricity the pressure will be on to have more.
I will admit that I would prefer to have wind turbines everywhere than even one nuclear fission site. Why we are still looking at fission instead of fusion I have no idea, I'm sure the technology would be there if the money was - if we can produce the Large Hadron Collider, surely we must be able to produce a viable fusion reactor.
The further you are down the pay scale, the more 'essential' you are when the s--- hits the fan... Sue Farbysmith 2020
Insults are engendered from vulgar minds, like toadstools from a dunghill - Charles Caleb Colton
We don't do charity in Germany, We pay taxes. Charity is a failure of governments' responsibilities - Henning Wehn
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AQUARIUM
by lincle. 8th Jan 2021 10:47am
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Toyah . .
by GaryFromWirral. 10th Jan 2021 1:39pm
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Sunrise Sun 8:08am
Sunset Sun 4:40pm
Local Time Sun 3:12am
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