To Wheel Or Not To Wheel ?

[cRiPpLe_rOoStEr]

Originally Posted by All Darc

If people on India would spend the same in energy and trash, per citizen, as USA people do...

Even if they never get to spend the same amount of energy as an average redneck, the way such energy is obtained might be proportionally dirtier. A lot of people in India still resort to wood-fire for cooking, in kitchens that often lack enough ventilation, thus leading to a higher concentration of carbon monoxide (which is in fact poisonous, unlike carbon dioxide). Other matters of concern would be the less stringent emission standards not just for stationary engines but also for vehicles, despite the market share for CNG in India.

Concentrated solar power (Solar CLP) looks intereting

I honestly don't understand why nobody tried a similar approach in Ceará
https://en.wikipedia.org/wiki/PS10_solar_power_plant

Hydro electric it's still cheaper but require a huge initial investment, so the investment takes longer to return. There is also a enviroment impact.

Environmental impact has been decreased in newer hydro-electric powerplants, even though in the end it's unavoidable.

[All Darc]

Solar ovens it's a proposed splution for cooking.



With some more precision in the mirros, they could create a home system using high efficience solar cells in a tiny spot, to get 1000 suns concentration and 40% efficience, getting electric energy and hot water (used to cool the solar cells), but it would require tracking the sun.
It require a special solar cells of high efficience to use concentrated sun light.

Originally Posted by cRiPpLe_rOoStEr

Even if they never get to spend the same amount of energy as an average redneck, the way such energy is obtained might be proportionally dirtier. A lot of people in India still resort to wood-fire for cooking, in kitchens that often lack enough ventilation, thus leading to a higher concentration of carbon monoxide (which is in fact poisonous, unlike carbon dioxide). Other matters of concern would be the less stringent emission standards not just for stationary engines but also for vehicles, despite the market share for CNG in India.

Such system require technology, advanced projects. Brazil politicswould had stolen public money a lot more, like the failed Angra I and Angra II nuclear power plants. And Ceará have no good technicians to operate a advanced system. In their case the simpler it's the best.

Originally Posted by cRiPpLe_rOoStEr

I honestly don't understand why nobody tried a similar approach in Ceará
https://en.wikipedia.org/wiki/PS10_solar_power_plant




Environmental impact has been decreased in newer hydro-electric powerplants, even though in the end it's unavoidable.

[All Darc]

Hay look that, a 80% efficience solar system being developed :

https://cleantechnica.com/2013/04/24...-conditioning/

But the last system needs 3 axis tracking, which elevate a lot6 the price of manufactre. A samll 2 axis system, like the image bellon, would be cheaper, and they would need just linear solar cells (in the tube line in the center):



BUT THERE IS A TRICK, since like the Israel system (very similar) it counts the hot water (used to cool the photovoltaic cells) in the total energy, even if it's mostly heat energy of hot water and not just the electric energy. If the high efficience solar cells could operate well, at higher temperatures, they could boil the water and move a turbine for aditional electric power.

[cRiPpLe_rOoStEr]

Originally Posted by All Darc

Solar ovens it's a proposed splution for cooking.

The problem would be the stove (oven is what we know as a forno in Brazil) needs to be placed outdoors.

Such system require technology, advanced projects. Brazil politicswould had stolen public money a lot more, like the failed Angra I and Angra II nuclear power plants. And Ceará have no good technicians to operate a advanced system. In their case the simpler it's the best.

Using those mirrors to reflect the sunlight to a water jug doesn't seem too complicated at all. But unfortunately I am forced to agree with you that most of the funds would be stolen by politicians...

[All Darc]

Oh stoves, I will try remamber...
If people on India go to walk to catch native wood in the place where they live, they have a lot of outdoor space.
Anyway it's strange... to think about how primitive mind/cultures like India (one of the worst places for women to born) would handle technology. Middle age minds with advanced gadgets.

Thell the american fellows in this forum how the less cost energy power plant, hydroelectric, it's more expansice on Brazil than the coal power plant on USA,in terms of bills fo final consumers.
And remamber how we have more portland ciment than USA, used a lot to built hydroelectrics.

Originally Posted by cRiPpLe_rOoStEr

The problem would be the stove (oven is what we know as a forno in Brazil) needs to be placed outdoors.

Using those mirrors to reflect the sunlight to a water jug doesn't seem too complicated at all. But unfortunately I am forced to agree with you that most of the funds would be stolen by politicians...

[cRiPpLe_rOoStEr]

Originally Posted by All Darc

If people on India go to walk to catch native wood in the place where they live, they have a lot of outdoor space.

It's more usual in rural areas, while in cities (including their slums) kerosene is still frequently used instead of bottled LPG.

Anyway it's strange... to think about how primitive mind/cultures like India would handle technology. Middle age minds with advanced gadgets.

Unless they were from some religious affiliation with some strict views against technology, it's an unavoidable trend.

[freebeard]

The exception to that rule would be the Amish. They take a very enlightened approach to new tech.

[cRiPpLe_rOoStEr]

Originally Posted by freebeard

The exception to that rule would be the Amish.

They are exactly the ones most people think of whenever there is a reference to strict views on technology.

[All Darc]

Area x Volume and Gulliver's Island

What these 3 have related?
A airplane. A small one...

You can increase surface area, when working with solar panels, solar photovoltaic cells. You can add more solar cells in larger vehicles, since they hage huger surface area. But while you increase a vehicle it's more close to increase the scale, instead of just surface, and surface and volume increase in very different ways.

If you double width and double lenght, you end with 4 times the initial surface area. But if you double the width, double the lenght and double height, you end with 8 times the initial volume or weight. So while you increase vehicles with larger, longer and taller models, like go from cars to trucks, the surface area for solar panels get more an more irrelevant.
That's why solar heavy trucks will not be reality even if a 99% efficient solar photovoltaics cell could be created.
Trucks could just save some little few fuel using solar panels for refrigeration, in cases the refrigeration it's required for the load.

Now let's think back in the reversal way, if we decrease the scale, the relevance of surface area for solar panels/cell and in relation to the weigh of the vehicle became more and more atractive.

That's why if you was a citizen in Gulliver's island you could perhaps have a solar airplane.

https://www.youtube.com/watch?v=zzOjhA-toN8

I wonder if this model have a supercapasitor to save energy when the solar plane cells are not well directed to the sun, or if it just lose some power for some short instants (1/3 sec or 1/2 second) when the manuever more the cells for a very less ideal angle related to the sun.

I know there is already a solar airplane, in our world (not Guliver's Island), but it's for justone person, have carbon fiber structure, have very large wings, and the solar cells also works as part of the cover ove the wings frame, all to save weight. And very slow....

[All Darc]

I need some help. In a solar car that is not very well flat on top, how would be the solar cells connection, since if just one cell get shade the entire cell connceted in series will get problem.
I presume they need to very vey plan what areas will have independent conncetion, in relation the the angle to the sun, in orther to minimize the risk.