RENEWABLE ENERGY: What's YOUR main cause for concern?

Some time in the next 100,000 years statistically we are due an ice age, How do you store radioactive waste for 100,000 years , sealed up so the radiation cannot leak from whatever container you choose through an ice age?

Chuck it in the sea.

Someone came up with a metal torpedo design, that you chuck in the deep ocean, it would sink, and bury itself into the ground from the depth. Geoligical surveys of ocean floors have shown this would be safe storage for millions, not hundreds of thousands of years.

But of course, even the mere suggesting of dumping it in the sea, and people get mental images of oil drums being chucked over the side of boats, and the eco warriors go mental.
 
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But of course, even the mere suggesting of dumping it in the sea, and people get mental images of oil drums being chucked over the side of boats, and the eco warriors go mental.

Yes. Once again, it is a lack of understanding which leads to unjustified worry and panic and which holds up progress.
 
The way we can fulfill our future energy needs is to construct hundreds of miles long Solar farms in the Sahara region of Africa, since this vast desert is of little value to anyone except the Govt. of various countries in Northern Africa, like Algeria, Chad, Tunisia, Libya, Sudan etc

The idea is to get a consortium of private investors, hitech companies, and by engaging top engineers and scientist to develop a modular solar generating system biggest in the whole world, system of solar panels, erected on high stands off the ground to stop them getting covered by sand storms, and have access roads for servicing for miles upon miles, not just hundreds of miles but perhaps all the way across the Sahara desert, stretching thousands of miles,

The project itself becomes like a huge power station and any acts of terrorist blowing part of this will have negligible effect on its overall out put, a real mega project.

Partly maintained by locals, creating local jobs, so they won't have to come to Europe in boats and risk lives, the modular system means if one panel array goes down, it automatically disconnects itself from the grid and flags a service call, underneath the supporting framework, you have stations like we have motorway services, this becomes a small town housing maintenance staff and other essential things to support a small community, and including accommodations for any foreign engineers for supplying expertise, accommodations , have mass storage of batteries, that retain charge for continuing supplying energy during dark hours, etc,

It may take a few years to plan, once it is completed, as it is modular, it can take several years to complete, so it can start producing electricity as it is being build, and expanded, increasing its output on a daily bases, until it has sufficient capacity to power whole of Europe, via a network of underground cables running below the Mediterranean sea, out of reach of most terrorist.

A project of this sort needs to start planning now and build using whatever raw materials we now have before we completely run out of oil, and countries like China could build all the modules and equipment cheaply, supplying millions of modules, supporting structures, batteries, and the land is virtually free, given by each sahara Government in return for some levy on energy exported, so this mega project would require the effort of all big ministers, engineers and scientist and millions of private investors from all over the globe, and this Mega Mega Solar Power Energy hose could be the biggest of its kind in the whole world. it could supply all of Europe and possibly all of Africa for its energy needs.
 
having said this, we have option to go for banks and arrays of mirrors collecting solar heat and superheating water to spin turbines to generate electricity from small nodes along thousands of miles stretch of Shara, so every 2 or so miles you have a small powerhouse, connected to grid, and as for solar panels or for mirrors, they are self cleaning to prevent sand storms from settling on them and reducing their efficiency.

These powerhouses should have self diagnostic capability, with automatic isolation if a fault develops, and flags raised, remotely controlled if necessary, all self monitoring for peak performance, each module having its own sub system, faults can be easily isolated, fire auto fire detection system, and fire fighting, with ample fire breaks between modules, built with awareness of terrorist attacks to disrupt power, so a well planned meg power house of Europe but placed in Africa where the sun shines stronger than anywhere.
 
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The way we can fulfill our future energy needs is to construct hundreds of miles long Solar farms in the Sahara region of Africa, since this vast desert is of little value to anyone except the Govt. of various countries in Northern Africa, like Algeria, Chad, Tunisia, Libya, Sudan etc

The idea is to get a consortium of private investors, hitech companies, and by engaging top engineers and scientist to develop a modular solar generating system biggest in the whole world, system of solar panels, erected on high stands off the ground to stop them getting covered by sand storms, and have access roads for servicing for miles upon miles, not just hundreds of miles but perhaps all the way across the Sahara desert, stretching thousands of miles,

The project itself becomes like a huge power station and any acts of terrorist blowing part of this will have negligible effect on its overall out put, a real mega project.

Partly maintained by locals, creating local jobs, so they won't have to come to Europe in boats and risk lives, the modular system means if one panel array goes down, it automatically disconnects itself from the grid and flags a service call, underneath the supporting framework, you have stations like we have motorway services, this becomes a small town housing maintenance staff and other essential things to support a small community, and including accommodations for any foreign engineers for supplying expertise, accommodations , have mass storage of batteries, that retain charge for continuing supplying energy during dark hours, etc,

It may take a few years to plan, once it is completed, as it is modular, it can take several years to complete, so it can start producing electricity as it is being build, and expanded, increasing its output on a daily bases, until it has sufficient capacity to power whole of Europe, via a network of underground cables running below the Mediterranean sea, out of reach of most terrorist.

A project of this sort needs to start planning now and build using whatever raw materials we now have before we completely run out of oil, and countries like China could build all the modules and equipment cheaply, supplying millions of modules, supporting structures, batteries, and the land is virtually free, given by each sahara Government in return for some levy on energy exported, so this mega project would require the effort of all big ministers, engineers and scientist and millions of private investors from all over the globe, and this Mega Mega Solar Power Energy hose could be the biggest of its kind in the whole world. it could supply all of Europe and possibly all of Africa for its energy needs.

Using a hotbed for terrorism for all our energy needs from a diffuse energy source that would be impossible to police effectively. And you can't see a problem?

And raising would not prevent problems from sand storms.

And you are aware that solar PV loses efficiency at higher temperatures?

Solar thermal technology is the only system appropriate for desert conditions, but even a small amount of dust results in huge drop offs of output.

And they use water and gas, so you have to pipe these in. Bit of an issue in a huge desert.

And you then have to lay hundreds of miles of HVDC cables across to Europe.

And fight off the locals

And have back up when the weather isn't right or its night time.

Be aware that molten-salt back ups are only commercially viable for up to 18hrs, so even if you have the capacity to provide instant power, and the back up at the same time, a sand storm lasting a day will wipe out your supply in an instant. And if its a calm day in Europe, all your wind turbines won't be working.

France and Russia will be raking it in. We should be set to be in the same position. With more new nuclear such as what we are planning, but also one of these beauties:
http://www.theengineer.co.uk/energy...for-the-uks-problem-plutonium/1016276.article
Will provide up to 500years on energy from the UKs nuclear waste stockpile.
 
Some time in the next 100,000 years statistically we are due an ice age, How do you store radioactive waste for 100,000 years , sealed up so the radiation cannot leak from whatever container you choose through an ice age?

Chuck it in the sea.

Someone came up with a metal torpedo design, that you chuck in the deep ocean, it would sink, and bury itself into the ground from the depth. Geoligical surveys of ocean floors have shown this would be safe storage for millions, not hundreds of thousands of years.

But of course, even the mere suggesting of dumping it in the sea, and people get mental images of oil drums being chucked over the side of boats, and the eco warriors go mental.
And waste all that energy that's just sat there?
 
My knowledge of electricity is limited but I do know that you get a drop in power the longer the cable, its not possible to carry 240v from the power stations hence it's thousands of volts but little amps or watts or whatever then they have the transformer thingamajigs to bring down the volts and raise the amp thingys, I think to transport the power to the UK would be nigh on impossible...

Perhaps a Sparky could enlighten us better...
 
I have always used Bell cement mixers as they are the market leaders, however the new ones although they look good are made in China and are carp, they come with a warning, do not use an extension cable more than 50meters as you get a drop in power and the mixer overheats and cuts out...
 
My knowledge of electricity is limited but I do know that you get a drop in power the longer the cable, its not possible to carry 240v from the power stations hence it's thousands of volts but little amps or watts or whatever then they have the transformer thingamajigs to bring down the volts and raise the amp thingys, I think to transport the power to the UK would be nigh on impossible...

Perhaps a Sparky could enlighten us better...


HVDC transmission losses are quoted as about 3.5% per 1,000 km, so probably linking to Spain would be the way forward. The longest are up to 2500km(ish) currently.

AC is usually used in this country, as the distances are not so great. HVDC require higher capital costs, so only worth it for specific projects.

http://en.wikipedia.org/wiki/List_of_HVDC_projects
http://en.wikipedia.org/wiki/High-voltage_direct_current
 
I have always used Bell cement mixers as they are the market leaders, however the new ones although they look good are made in China and are carp, they come with a warning, do not use an extension cable more than 50meters as you get a drop in power and the mixer overheats and cuts out...


32 yrs. ago I used to order and collect them by the three dozen from the producers on a monthly basis as I was the under manager / maintenance guy for an fairly big electro / mechanical hire / sales company .

These older UK made ones also had the same warning but it gave the cross sectional area of the cable needed for 25 mtr extension cables in the hand book
I seem to recall that the max length of the whole extension recommended was 90 feet

Having a greater cross sectional area in the conductors will lower the resistance so the voltage drop will be much lower. So don't use these silly cable reel type extensions from garden centres unless they are really heavy duty ones with heavy duty cable , plugs and sockets on them .

I use two of the heavy duty caravan cable extensions .. seem to think that these heavy duty ones are rated at up to 20 amps continuous per 25 mtrs . 50 mtrs should allow you to pull around 15 amps @ 220 volts .

No doubt some of the more current knowledge guys with clip on ammeters might have a better set of figures for you to look at.
 
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