Search found 16 matches

I personnaly don't like tar sands very much because:
1) it is still a CO2 emitter, with lower eroi, and therefore even worse useful energy / CO2 ratio

2) produces gasoline at the end process whic ...

Hi

As I see people often got paniced when they see that hydrogen is just an energy carrier or energy store, just like batteries.

But we shouldn't, it just means we need to build up the excces p ...

The ongoing or forming energy crisis on a broader perspective is not only just Peak Oil or Peak Coal, or eventually Peak Natural gas, but instead a shift from high eroi resources to low eroi resources ...

An EROI of 5 or a slightly more fits well to the coal plants, and the oil usage's 6-8 eroi level, and gives a reasonable explanation why we use still coal instead of the better uranium.
Did you meas ...

I have this document, on last pages there are the results in energy intensity, and energy payback times. (6.5 or 7 according to reactor type) EROI can be calculated from the payback ratio, divided wit ...

this particular document is made in australia, and they mentioned in the document, that australia don't have any nuclear plants yet, so I think the authors plan include future nuclear plants

howeve ...

This is interesting debate, I would eagerly accept that nuclear has a far better EROI than I previously thought, but right now i don't se decisive evidence for that.

http://www.pmc.gov.au/umpner/do ...

I have a strange feeling that we are not understanding the word eroi the same way...

I would be interested for some basic calculations on nuclear eroi, let's say for 1 tons of U235, enriched to 5 ...

uranium in the crust: I don't know the speciel chemistry and physics around that, but it is completely illogical

uranium is a very heavy element, the largest of all naturally occuring, so without e ...

Mining Uranium from the asteroids is incredibly foolish and unecissary, partly because earth has rather unique conditions in the solar system that concentrate uranium and thorium nearly exclusively in ...

I already wrote it into another topic, which remained unanswered:

what about space uranium mining? The meteorites has a much larger uranium (and other expensive rare materials) pmm than granite he ...

Peak U

Yes

Look here

world production is in decline ~5% in 2006 despite record prices

peak theory includes that investments are following the price change, and 2years in the minin ...

Why plug in hybrids don't shoot up on the market?
- first, today's hybrids are not real hybrids, Toyota prius uses electric power only to add some additional power to the gasoline engine, there is s ...

We SUPPORT the idea that it should be put MUCH closer to Paris - (whoose energy-intensive habits require more electrical power) but somehow it has to be stuck out in the provinces. (We have no idea wh ...

Most of Rural America would disintegrate in 5 days without cars. Sad, but true. I'm blessed with a 5 mile (easy bike ride) commute, but most people out here have 20-40 mile one way commutes. I'm not e ...