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Old 01-19-2011, 05:58 PM
 
Location: Tampa
3,981 posts, read 9,429,647 times
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here is one idea

Solar-powered 'smart' roads could zap snow, ice - CNN.com


another one

why not cover the freeways, turn them into tunnels. on the outside, have solar panels, and on the inside, some sort of fan to turn a generator(from the passing cars)

would be pricey, but should provide lots of juice!
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Old 01-19-2011, 06:11 PM
 
Location: North of Nowhere, South of Everywhere
1,085 posts, read 977,596 times
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I would be intrigued to see it work. But it is a good idea
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Old 01-19-2011, 09:02 PM
 
39,477 posts, read 40,787,686 times
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Quote:
Solar cells inside its glass surface would allow the roadway to act as a giant solar power generator, fueling embedded heating elements and making plows and other snow removal equipment unnecessary.
Considering the cost of solar cells, limited life spans of both the solar cells and roads....


Quote:
Originally Posted by crystalblue View Post

another one

why not cover the freeways, turn them into tunnels. on the outside, have solar panels, and on the inside, some sort of fan to turn a generator(from the passing cars)

would be pricey, but should provide lots of juice!
Cars don't generate enough air flow , matter of fact all tunnels that are long have ventilation systems to extract the fumes.

This would be besides the point of the enormous expense involved and all the energy used to create them. Cement plants are second largest users of coal behind power plants because they require enormous amounts of heat for the process.
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Old 01-19-2011, 09:55 PM
 
Location: Tampa
3,981 posts, read 9,429,647 times
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Quote:
Originally Posted by thecoalman View Post
Considering the cost of solar cells, limited life spans of both the solar cells and roads....




Cars don't generate enough air flow , matter of fact all tunnels that are long have ventilation systems to extract the fumes.

This would be besides the point of the enormous expense involved and all the energy used to create them. Cement plants are second largest users of coal behind power plants because they require enormous amounts of heat for the process.
supposedly these can do it

Highway wind turbines to capture energy from passing vehicles — Autoblog Green

and would it have to be a complete tunnel? why not some sort of lattice work with the solar panels/wind turbines attached?
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Old 01-19-2011, 11:58 PM
 
39,477 posts, read 40,787,686 times
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That's an interesting idea but you'll create more resistance to pass through them. For example as you are going through a tunnel there is more air pressure in front of the car requiring more energy to maintain the same speed. You could possibly lose energy.

Another example of this is the idea I saw where you tow a trailer behind you with generator on it that is powered by the wheels, this is supposed to store energy in a battery. The issue is more wind drag and friction caused by the tires means more gasoline to power the vehicle. You aren't gaining anything and in fact just using more gas... you'd be better off just using standing gasoline generator.

Hybrids are some what similar but they aren't made to generate electric, instead they are designed to minimize the loss of energy the gasoline engine produces by recouping it when braking.
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Old 01-20-2011, 06:31 PM
 
Location: Somewhere in northern Alabama
17,870 posts, read 54,168,671 times
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This type of pop "science" shows a COMPLETE lack of understanding of science, physics, and common sense.

Use solar cells to melt the snow on roads... oh wait... isn't insolation at the very lowest levels midwinter when snow falls from the sky? (for the concept challenged - it is DARK most of the time midwinter) and doesn't snow COVER solar cells, effectively stopping any useful output?

Then, when you have electricity in the roadways from solar cells and there is an accident, gee, I wonder what might happen when massive electric conductors and spilled gasoline mix, or the water from melting snow electrocutes the accident victims, turning them into krispy kritters, along with any would-be rescuers?

As for using the power of passing cars to turn generators... there oughtta be a law... oh wait, there IS. It is called conservation of energy. For every erg of energy generated, the car has to give away an erg of energy. Why not just put cars on treadmills for five minutes before entering a road, and harvest the energy there is a more efficient and less costly fashion?

I expect such wildly impractical schemes for third graders, but for adults to seriously promote such snake oil is offensive to those who taught them science in school.
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Old 02-22-2011, 10:58 AM
 
Location: DFW
6,800 posts, read 11,772,651 times
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Yeah, and this will reduce my fuel efficiency and raise my cost of gas. No thanks.
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Old 02-22-2011, 06:23 PM
 
Location: West Orange, NJ
12,545 posts, read 18,440,623 times
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Quote:
Originally Posted by harry chickpea View Post
This type of pop "science" shows a COMPLETE lack of understanding of science, physics, and common sense.

Use solar cells to melt the snow on roads... oh wait... isn't insolation at the very lowest levels midwinter when snow falls from the sky? (for the concept challenged - it is DARK most of the time midwinter) and doesn't snow COVER solar cells, effectively stopping any useful output?

Then, when you have electricity in the roadways from solar cells and there is an accident, gee, I wonder what might happen when massive electric conductors and spilled gasoline mix, or the water from melting snow electrocutes the accident victims, turning them into krispy kritters, along with any would-be rescuers?

As for using the power of passing cars to turn generators... there oughtta be a law... oh wait, there IS. It is called conservation of energy. For every erg of energy generated, the car has to give away an erg of energy. Why not just put cars on treadmills for five minutes before entering a road, and harvest the energy there is a more efficient and less costly fashion?

I expect such wildly impractical schemes for third graders, but for adults to seriously promote such snake oil is offensive to those who taught them science in school.
i don't think we teach science anymore anyways. lol.

this post scores some creative points. nice to see people thinking. but doesn't sound like a fantastic idea...
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Old 02-22-2011, 06:32 PM
 
371 posts, read 326,602 times
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I think the American felon population would love to see solar panels placed along the roads.

So much easier than stealing copper cables.
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Old 02-23-2011, 11:08 PM
 
Location: central Indiana
220 posts, read 387,201 times
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Quote:
Originally Posted by randy8876 View Post
I think the American felon population would love to see solar panels placed along the roads.

So much easier than stealing copper cables.
"people seem not to see that their opinion of the world is also a confession of their character"
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