Welcome to WikiWirral, sharing is what we do best.
Forum Statistics
Posts1,019,348
Topics75,077
Members13,032
Forums66
Posts in last 24hrs7
Most Online7,831
Apr 8th, 2013
Who's Online Now
43 registered members (alan128, 10 invisible), 1,310 guests, and369 spiders.
Key: Admin, Global Mod, Mod
Social Media : Follow Us


Popular Topics(Views 7days)
New General Forums
When will we learn
by casper. 20th Jul 2019 8:14pm
HMS Li WO
by casper. 18th Jul 2019 7:39pm
EU Successes
by diggingdeeper. 11th Jul 2019 3:39pm
Harry Brown
by cools. 10th Jul 2019 2:06pm
New Wirral History
Unidentified Dredgers
by locomotive. 23rd Jun 2019 8:18pm
Cheshire Tithe Maps Online
by yoller. 21st Jun 2019 11:42am
POW Camp, Bidston WW1
by bert1. 23rd Nov 2012 7:12am
721 E.S.W.A club 54-56 Park Road South Birkenhead
by derekdwc. 1st Jul 2012 10:33am
ABC Cinema
by pablo42. 3rd Apr 2012 9:21am
Forum Tips
Photo Gallery Forums
The gathering storm: Mersey waterfront today
WW1 Monument, Birkenhead
Topic Replies
What song are you listening to?
by Dilly. 20th Jul 2019 7:36pm
Wirral Crime Yesterday
by diggingdeeper. 20th Jul 2019 5:43pm
Set Your Clocks
by granny. 20th Jul 2019 11:56am
Body repairs
by _Ste_. 19th Jul 2019 11:40pm
Cheshire Live Steamers
by muzzy2. 18th Jul 2019 9:28am
Accessing Marine Lake, New Brighton
by saltytom. 17th Jul 2019 11:10am
417 Ring o' Bells West Kirby
by diggingdeeper. 16th Jul 2019 5:34pm
free Items to go before scrapman commoth
by gerry1. 15th Jul 2019 3:17pm
Black 2008 Vauxhall Meriva - MOT Failure
by lansyp. 15th Jul 2019 11:41am
July
M T W T F S S
1 2 3 4 5 6 7
8 9 10 11 12 13 14
15 16 17 18 19 20 21
22 23 24 25 26 27 28
29 30 31
Recent Posts : What's On ?
Cheshire Live Steamers
by muzzy2. 18th Jul 2019 9:28am
Death Cafe Wirral - this time at Stollies
by martinharris. 28th Jun 2019 3:43pm
Previous Topic
Next Topic
Print Topic
Rate Topic
Tidal Turbines #1004893
21st Mar 2016 3:23am
21st Mar 2016 3:23am
Joined: Jul 2008
Posts: 12,664
Birkenhead
diggingdeeper Offline OP

Wiki Master
diggingdeeper  Offline OP

Wiki Master
Joined: Jul 2008
Posts: 12,664
Birkenhead
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


In a time of universal deceit - telling the truth is a revolutionary act. George Orwell

We should judge our economy by the absence of poverty, not the number of billionaires - Jeremy Corbyn
Google Ads
Re: Tidal Turbines [Re: diggingdeeper] #1004903
21st Mar 2016 8:48am
21st Mar 2016 8:48am
Joined: May 2011
Posts: 788
Greasby
G
Greenwood Offline
Wise One
Greenwood  Offline
Wise One
G
Joined: May 2011
Posts: 788
Greasby
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.
Re: Tidal Turbines [Re: diggingdeeper] #1005012
22nd Mar 2016 12:13am
22nd Mar 2016 12:13am
Joined: Jan 2010
Posts: 1,659
wirral
E
Excoriator Offline
Forum Addict
Excoriator  Offline
Forum Addict
E
Joined: Jan 2010
Posts: 1,659
wirral
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.




Re: Tidal Turbines [Re: diggingdeeper] #1005014
22nd Mar 2016 5:27am
22nd Mar 2016 5:27am
Joined: Jul 2008
Posts: 12,664
Birkenhead
diggingdeeper Offline OP

Wiki Master
diggingdeeper  Offline OP

Wiki Master
Joined: Jul 2008
Posts: 12,664
Birkenhead
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.


In a time of universal deceit - telling the truth is a revolutionary act. George Orwell

We should judge our economy by the absence of poverty, not the number of billionaires - Jeremy Corbyn
Re: Tidal Turbines [Re: diggingdeeper] #1005042
22nd Mar 2016 11:45am
22nd Mar 2016 11:45am
Joined: Jan 2010
Posts: 1,659
wirral
E
Excoriator Offline
Forum Addict
Excoriator  Offline
Forum Addict
E
Joined: Jan 2010
Posts: 1,659
wirral
I doubt floating turbines are any more expensive to install than onshore ones. The necessary flotation tanks are pretty simple to construct and are probably comparable to the cost of excavation and building a concrete base and roads.

Floating turbines can be produced entirely on land and simply floated out and moored.

Fusion seems to be a dead duck. We are still thirty years off getting a working one, and have been ever since the 1950s. Nobody has managed to make a sustainable one yet, let alone solving the engineering needed to extract the heat from a few micrograms of gas at 100 million degrees into steam at a few hundred degrees. Fortunately, we don't need to. We are bathed in a constant flux of plentiful energy from the fusion reactor 93 million miles away. All we have to do is go and collect it!

Making onshore turbines much bigger would not only reduce the cost of the electricity they produce, it would also greatly increase the number of suitable sites. Unfortunately onshore turbines in the UK are limited by law to what is now a lot smaller than the 7 and 8MW monsters you can build at sea.


Moderated by  Mod 

Random Wirral Images

Click to View Topic.
Newest Topics
Cheshire Live Steamers
by diggingdeeper. 16th Jul 2019 10:24pm
Body repairs
by kamikazi. 16th Jul 2019 10:09am
Set Your Clocks
by diggingdeeper. 15th Jul 2019 11:43pm
Wirral Crime Yesterday
by diggingdeeper. 13th Jul 2019 4:05pm
Ah, how sad.
by venice. 9th Jul 2019 6:43pm
For Sale & Free
free Items to go before scrapman commoth
by gerry1. 15th Jul 2019 3:17pm
B&O MX7000 25”
by _Ste_. 14th Jul 2019 1:17am
14” Sony Trinitron PVM Monitors
by _Ste_. 14th Jul 2019 1:12am
Sony Trinitron pvm monitors
by _Ste_. 14th Jul 2019 1:08am
Block Paving
by delta6. 13th Jul 2019 9:39am
Member Spotlight
Dilly
Dilly
wallasey
Posts: 8,794
Joined: July 2011
Show All Member Profiles 
Newest Members
Blinkbonny, Carl63, Cal2221, mccairn, Benbow
13032 Registered Users
Today's Birthdays
No Birthdays
New Wirral Info
Cheshire Live Steamers
by diggingdeeper. 16th Jul 2019 10:24pm
Abandoned Buildings around Wirral
by sabian8989. 8th Jul 2019 11:48pm
Accessing Marine Lake, New Brighton
by Aryia. 30th Jun 2019 8:49pm
Death Cafe Wirral - this time at Stollies
by martinharris. 28th Jun 2019 3:43pm
Cutting gutters and down pipe
by ultimate. 21st Jun 2019 7:20am
News : New Topics
Set Your Clocks
by diggingdeeper. 15th Jul 2019 11:43pm
Wirral Crime Yesterday
by diggingdeeper. 13th Jul 2019 4:05pm
Saudi arms sales
by granny. 20th Jun 2019 11:04am
The Daffodil (Overchurch) is Saved
by Norton. 19th Jun 2019 10:25am
Thieves About
by diggingdeeper. 11th Jun 2019 12:30am
New Enthusiast Forums
Body repairs
by kamikazi. 16th Jul 2019 10:09am
Ah, how sad.
by venice. 9th Jul 2019 6:43pm
Best Dog Walking Parks ?
by Fenix. 25th Jun 2019 9:42am
windows 10
by steviebyday. 21st Jun 2019 5:08pm
Chernobyl
by Softy_Southerner. 4th Jun 2019 11:40am
Popular Topics(Views 24hrs)
Wirral Sunrise Sunset
Sunrise Sat 5:09am
Sunset Sat 9:27pm
Local Time Sat 9:47pm
Powered by UBB.threads™ PHP Forum Software 7.6.1.1