When you hold US bills in your hands, it looks like real, solid money, and the graphics/print on them speak of a solid state.
US printed money is probably the worst designed money still in use. Despite a lifetime of Holywood's promotion of the greenback, it still looks like a throw-back from a bygone era. It also goes tatty very quickly, making it seem rather low quality. Just my 3 euros.
Why is a 1kW increase spike any different to a 1kW decrease spike? Why is generating more power different to turning off an electric kettle? Why are carefully controlled sinewave inverters going to generate more problems than a $20 arc-welding kit?
Is it possible that you don't know what you are talking about?
Connect a 1V 300A transformer as an autotransformer to increase the voltage on the outgoing side. You could make one of these using a 300VA toroidal transformer with a few turns of battery cable through the hole.
It's like eating veg diet.When you consume something lowest in the food chain, you are most efficient per cal.
However, if you consider two 'organisms', one consisting of humans + kangaroos + grass and the other consisting of human + soya beans, the kangaroo option is more efficient in terms of land quality requirements, water use and food transportation costs.
the total amount of waste generated by a nuclear power plant is in the order of a ton/year.
If that's the case, why are there endless worries about the gigalitres of waste water from the australian uranium mines? Are you saying that there are more than a million nuclear power plants in operation worldwide? And why do they use open cut mining to dig out a few tonnes of material each year?
One site said that 1 tonne of enriched uranium will produce 45GWd of electricity, or about 123MW continuous over a year. I presume that making 1 tonne of enriched uranium takes more than 1 tonne of ore? About 9 tonnes of pure U3O8, but I can't find the conversion rate from the current ore quality.
Interesting post. You might like to look into evacuated tube solar collectors - apparently they are around $2 to produce a complete tube (and you'll need between 10 and 30 depending on your climate and hot water demands), and you avoid the mess of a separate fluid loop. They also work on cloudy days at -40!
Humans are very poor at converting grass into food. Grass is a lot easier to grow than lentils. Hence, eating certain meats is more efficient than trying to feed humans directly.
Someone worked out that if everyone went vegetarian we would not have enough arable land to support our current population.
If you are producing a million litres of diesel you'll need about a million litres of water - for every C sequestered from CO2 you need at least 2 H from water - so 1 mol decane requires 11mol H2O. 1 mol of decane has a mass of 142g, 11 mols of water has a mass of 198g. That's ignoring evaporation losses.
Freeway traffic always expands to meet available capacity. If you make this chokepoint better somewhere else will overload. Better to discourage unnecessary car use instead.
Concentrating collector PV is easily energy positive (heck, plain silicon PV is energy positive according to the DoE).
You seem miss the point that the majority of energy needs are not electricity but instead various grades of thermal energy and transport energy. We could halve the US residential energy demand simply by using solar space heating, a technology that was proven 50 years ago (with 50 year old materials tech.). Similarly, there are cheap technologies such as solar ponds that can produce process heat for industry (and are).
If you have a big generation capacity it would be better to use spot prices, which can reach hundreds of dollars / MWh. That could be $20k/day based on spot prices I've seen here. Solar panels generally generate most at times of peak demand. If they could average 8k/day (a reasonable assumption) they would pay off in 17 years, quite good for an electrical generation system. For comparison, coal takes 40 years to pay off (If you don't have to pay for the coal), nuclear doesn't pay off in 50 years - at which point it needs to be replaced - ask the French or the Brits. Realistically, solar and wind and natural gas have the fastest payback times (when properly integrated over spot prices and availability).
Interesting, I only considered as far as Madrid which has a lovely fast train. But Portugal sounded better. I was under the impression that the AVE travelled to Portugal.
The TGV could do LA to NY in 10 hours at the speeds it currently does in France. It could drop this to 7 quite comfortably given the flat middle section. 10 hours on a train is much more pleasant than 5 hours on cattle class. I've done both regularly - I can get work done on a 10 hour train trip and get to the destination feeling refreshed.
Incidently, Europe is larger than the contiguous USA, so one would imagine that they already understand the problems of size. Furthermore, they have problems that aren't an issue in the US, such as having a different language and standards in every country. Despite that, they have a fantastic rail service from Poland to Portugal.
Slashdot Mirror
When you hold US bills in your hands, it looks like real, solid money, and the graphics/print on them speak of a solid state.
US printed money is probably the worst designed money still in use. Despite a lifetime of Holywood's promotion of the greenback, it still looks like a throw-back from a bygone era. It also goes tatty very quickly, making it seem rather low quality. Just my 3 euros.
Why is a 1kW increase spike any different to a 1kW decrease spike? Why is generating more power different to turning off an electric kettle? Why are carefully controlled sinewave inverters going to generate more problems than a $20 arc-welding kit?
Is it possible that you don't know what you are talking about?
And use the waste heat to heat your house.
Connect a 1V 300A transformer as an autotransformer to increase the voltage on the outgoing side. You could make one of these using a 300VA toroidal transformer with a few turns of battery cable through the hole.
It's like eating veg diet.When you consume something lowest in the food chain, you are most efficient per cal.
However, if you consider two 'organisms', one consisting of humans + kangaroos + grass and the other consisting of human + soya beans, the kangaroo option is more efficient in terms of land quality requirements, water use and food transportation costs.
Do they just peel them off the road, or what?
the total amount of waste generated by a nuclear power plant is in the order of a ton/year.
If that's the case, why are there endless worries about the gigalitres of waste water from the australian uranium mines? Are you saying that there are more than a million nuclear power plants in operation worldwide? And why do they use open cut mining to dig out a few tonnes of material each year?
One site said that 1 tonne of enriched uranium will produce 45GWd of electricity, or about 123MW continuous over a year. I presume that making 1 tonne of enriched uranium takes more than 1 tonne of ore? About 9 tonnes of pure U3O8, but I can't find the conversion rate from the current ore quality.
Interesting post. You might like to look into evacuated tube solar collectors - apparently they are around $2 to produce a complete tube (and you'll need between 10 and 30 depending on your climate and hot water demands), and you avoid the mess of a separate fluid loop. They also work on cloudy days at -40!
The main problem is rail inductance. That effectively limits the upper speed.
Humans are very poor at converting grass into food. Grass is a lot easier to grow than lentils. Hence, eating certain meats is more efficient than trying to feed humans directly.
Someone worked out that if everyone went vegetarian we would not have enough arable land to support our current population.
You don't think it's just a few random wedding rings that fell down the toilet? (Where's your muse when you need them?)
Perhaps the 10 well written stories were all passed over?
If you are producing a million litres of diesel you'll need about a million litres of water - for every C sequestered from CO2 you need at least 2 H from water - so 1 mol decane requires 11mol H2O. 1 mol of decane has a mass of 142g, 11 mols of water has a mass of 198g. That's ignoring evaporation losses.
Freeway traffic always expands to meet available capacity. If you make this chokepoint better somewhere else will overload. Better to discourage unnecessary car use instead.
Take the HOA to court?
Instead going into the coffers of Big Uranium.
Ignoring the false dichotomy, can I just point out that switching to nuclear is no guarantee that the poisoner will or won't strike again.
(and besides, doesn't Europe import all it's nuclear fuel anyway?)
How practical would this technology be for storing demand fluctuations in the grid?
Concentrating collector PV is easily energy positive (heck, plain silicon PV is energy positive according to the DoE).
You seem miss the point that the majority of energy needs are not electricity but instead various grades of thermal energy and transport energy. We could halve the US residential energy demand simply by using solar space heating, a technology that was proven 50 years ago (with 50 year old materials tech.). Similarly, there are cheap technologies such as solar ponds that can produce process heat for industry (and are).
That means 24e9 tonne / ((381e-6)*1.2kg/m^3)year = roughly 1.7km^3 air per second.
That's a lot of air. If we had an air intake 1km^2 in area it would require the air to enter at mach 6.
If you have a big generation capacity it would be better to use spot prices, which can reach hundreds of dollars / MWh. That could be $20k/day based on spot prices I've seen here. Solar panels generally generate most at times of peak demand. If they could average 8k/day (a reasonable assumption) they would pay off in 17 years, quite good for an electrical generation system. For comparison, coal takes 40 years to pay off (If you don't have to pay for the coal), nuclear doesn't pay off in 50 years - at which point it needs to be replaced - ask the French or the Brits. Realistically, solar and wind and natural gas have the fastest payback times (when properly integrated over spot prices and availability).
Yeah, fair enough, good beans + plunger or drip coffee is certainly better than bad beans and espresso.
Drip coffee?! Yuck. Get yourself an espresso machine man! (Mine cost me $200 and has been going strong for 6 years now)
Interesting, I only considered as far as Madrid which has a lovely fast train. But Portugal sounded better. I was under the impression that the AVE travelled to Portugal.
The TGV could do LA to NY in 10 hours at the speeds it currently does in France. It could drop this to 7 quite comfortably given the flat middle section. 10 hours on a train is much more pleasant than 5 hours on cattle class. I've done both regularly - I can get work done on a 10 hour train trip and get to the destination feeling refreshed.
Incidently, Europe is larger than the contiguous USA, so one would imagine that they already understand the problems of size. Furthermore, they have problems that aren't an issue in the US, such as having a different language and standards in every country. Despite that, they have a fantastic rail service from Poland to Portugal.