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Old 12-09-2014, 07:20 PM
 
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Quote:
Originally Posted by gottaq View Post
Can man create technology to prevent sea levels from rising, in the future? There is one scientist who thinks we can freeze the ice caps with reflective particles, to them from melting and raising sea levels. Other ideas that have been pitched include building a giant manmade lake in the middle of America (or other countries) to allow excess ocean water to flow into it, evening out the sea levels. Also what about hurricanes, earthquakes and tsunamis... can man's technologies eventually overcome these in the far future?
Geoengineering - Wikipedia, the free encyclopedia
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Old 12-09-2014, 07:25 PM
 
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Originally Posted by thecoalman View Post
Even if the cost per watt was 10% of fossil fuels it would still would cost more to fully replace.


Let's say you have an ideal day and you get 8 hours of sunlight, you're going to need that much generation to meet demands. You still have 16 hours left that is going to require at the very least doubling your capacity and enough storage for it.

For one day under ideal conditions you would need 2000GW of generation capacity and 1000GW of storage. We can't guarantee ideal conditions, want enough for 2 days if the second day is bad weather conditions? You generation capacity requirement is now at 4000GW and 3000GW of storage. How many days do you need, 5? A week? What happens if you have a run of bad weather for a month?

These are just some general numbers to drive home a point. This is why solar and wind will never be a predominant source of electric at least at anytime in the near future. Perhaps 50 or 100 years from now but it's not something that will happen anytime soon.
You may not realize it, but this Josseppie character has been repeating the claims of the extreme futurists almost verbatim in another thread for over a year - you know, like that humans will have their ailments cured by nanobots in 2030, computers equivalent to PC's will be smaller than human cells and more intelligent than us in the 2030's, etc.

All he ever does is repeat them over and over, and if you disagree he does it again.

Don't debate the guy, you're wasting your time. I got suckered into it a few months ago. Never again.
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Old 12-09-2014, 07:38 PM
 
37,072 posts, read 38,332,350 times
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Originally Posted by prosopis View Post
It just moves heat from one place to another. One could easily use this heat and electricity to heat all homes and save some fuel that is typically used to provide the modest amount of heat needed for a home.
Yes but you can't generate electric with it in any practical sense. Geo thermal systems in homes operate at modest temperatures, you're mechanically extracting a small amount of heat using electric. You're expending energy but it's much more efficient than regular electric because the "fuel" is the groundwater. The heat you extract could never be converted back to the same amount of electric required to produce it because of losses of energy e.g. mechanical friction. If you could you just invented the world's first free energy machine.

In a geothermal well of the future drilled deep into the earth's crust the temperatures are much higher and possibly you wouldn't even need any mechanical energy to bring it to the surface. For example you could have two parallel boreholes. One would be used to direct water and the other could be used as a conduit for steam which could then power a generator on the surface.
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Old 12-09-2014, 07:43 PM
 
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Originally Posted by Josseppie View Post
Solar energy will be nearly free by 2033 then the cost to store the energy is going down as well.
LOL, even people in the solar industry would never make such silly claims. Sans some earth shattering breakthrough that is not going to happen.
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Old 12-10-2014, 04:15 AM
 
1,152 posts, read 959,384 times
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Originally Posted by thecoalman View Post
Yes but you can't generate electric with it in any practical sense. Geo thermal systems in homes operate at modest temperatures, you're mechanically extracting a small amount of heat using electric. You're expending energy but it's much more efficient than regular electric because the "fuel" is the groundwater. The heat you extract could never be converted back to the same amount of electric required to produce it because of losses of energy e.g. mechanical friction. If you could you just invented the world's first free energy machine.

In a geothermal well of the future drilled deep into the earth's crust the temperatures are much higher and possibly you wouldn't even need any mechanical energy to bring it to the surface. For example you could have two parallel boreholes. One would be used to direct water and the other could be used as a conduit for steam which could then power a generator on the surface.
Reread my posts with the assumption that I am saying exactly what you said here I am categorically not saying that shallow geothermal for home heating generates electricity. I have no idea where you got that from what I wrote, we are both saying the same thing in different ways

I see where the confusion came from now, at least with that last post. Shoul have said:
"One could easily use this heat and grid power to run the air handler, to heat all homes, and save some fuel that is typically used to provide the modest amount of heat needed for a home."

Sloppy phrasing on my part, I must not have reread that one before posting.
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Old 12-10-2014, 05:01 AM
 
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Lots of ice and snow melt every spring,is there a measurable rise in ocean levels?
Also arctic ice is already floating so its already displacing its own volume and therefore wouldnt cause much if any ocean rise.
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Old 12-13-2014, 07:46 PM
 
Location: Sarasota FL
6,527 posts, read 8,620,272 times
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Technology can't stop sea level rising but no matter.
A group of people will get together including some know it all scientists. The will submit for a government grant [our tax money] to study 'the problem'. The will need $10 million for the study, to take 5 years to do it. Of course, the conclusion will be that they can solve the problem but they will need $500 million to do it. No time limit when the project will be started, [think Solyndra, high speed rail], no guaranty it will work. All board members will pay themselves huge salaries and benefits. When it fails 'Oh well, we had good intentions'
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Old 12-19-2014, 02:10 AM
 
33,166 posts, read 39,145,829 times
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Quote:
Originally Posted by d4g4m View Post
Technology can't stop sea level rising but no matter.
A group of people will get together including some know it all scientists. The will submit for a government grant [our tax money] to study 'the problem'. The will need $10 million for the study, to take 5 years to do it. Of course, the conclusion will be that they can solve the problem but they will need $500 million to do it. No time limit when the project will be started, [think Solyndra, high speed rail], no guaranty it will work. All board members will pay themselves huge salaries and benefits. When it fails 'Oh well, we had good intentions'
So whats your solution to the problem of scientists getting paid for their work? Should they all be unpaid volunteers or should the scientific community be eliminated entirely?
I'd imagine most of what we are today is a result of science and by default scientists.
If rising sea levels are a future problem i'd imagine it will be the scientists that come up with the solutions that will address the problem.
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Old 12-21-2014, 02:08 PM
 
Location: Pennsylvania
1,392 posts, read 1,213,439 times
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Quote:
Originally Posted by Josseppie View Post
We can plus with how fast solar technology is advancing we will be off fossil fuels by the 2030's. Way before the new climate report by the UN said we need to be.
No we won't be. It would take more then 2 decades to get off fossil fuels entirely and that's assuming we had a realistic replacement.
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Old 12-21-2014, 02:24 PM
 
Location: Pennsylvania
1,392 posts, read 1,213,439 times
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As far as replacing coal goes the only two viable options are nuclear and geothermal currently. Hydropower just doesn't cut it even with wave power thrown in. Solar doesn't currently cut it either with lack of storage, how expensive it is, and being dependent on the weather. Wind power is even worse then the other two. Nuclear and Geothermal can solve the electricity production side of things but as far as transportation goes there is no good alternative fuel source that is economically viable and/or that can be produced in mass.
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