Actually there is a method of arconditioning that uses steam and a sorption desorption cycle, I forget the name of it right now, but the problem is its rather more expensive than conventional air conditioning. In a large setting it might be economical
I think you misunderstand how a fuel cell works, it doesnt "store" energy like a battery does, you dont recharge a fuel cell. Fuel, in this case, natural gas goes in, and electricity, heat and waste come out. Most of the energy lost in your house is lost as heat energy, which can be a power source, but only if there is a big temperature gradient. (say your teakettle was at 500 degrees C, they you can think about producing power). It is very hard to recapture low grade waste heat like that given off by most household appliances, and you certainly cant put it into a fuel cell, unless you converted the waste heat to natural gas somehow, which is impossible at the heat levels in the home. You cant win, you cant break even, you cant get out of the game.
Um, no. solar power hits the earth at about 1kw per square meter ( on a good sunny day) the best conversion efficiency for solar panels is about 25%, which means you need 4 square meters to get 1kw of power. The average house uses 7 kw of power so you need 28 square meters to supply the needs of the home. But thats 7kw averaged over a day, and the sun isnt out all day, so say 3 times as much to account for that, plus to charge up the batteries, so 84 square meters of solar panels. at 25% efficiency, this will cost you about $50k (US) wheras you can buy a fuel cell for $5-7k or about on order of magnitude less. Solar is nice, but it has a long way to go.
1: hydrogen is not as explosive as you might think, yes it is explosive, most energetic molecules are, however, if a hydrogen tank leaks, the hydrogen will disperse to nonexplosive levels extremely quickly, since it is so much lighter, and therefore a faster moving molecule, than say gasoline. leave a hydrogen tank open for 10 minutes, and everything is gone, leave a gas tank open for 10 minutes, its still highly explosive. Id be more worried about local yokels inspecting the gas tanks on their car while smoking a cigar, theyd be evolved out of the species quite quickly
2.This is true, however when the NG is reformulated to extract the hydrogen, the sulfur is extracted as well. I think the figure that ive heard is its down to about 2 ppm, and the acceptable level is about 10 or so but im not sure on that. Even if they do need a catalyst that has to be swapped out, it would be like getting the oil changed on your car or something, plus the article says they will check the things and service them yearly, at which time i assume this would be done
hmm, well before i get flamed, the process i was talking about above to produce natural gas is called the sabatier process, technically you only need heat to make it run,since they didnt have alot of electricity in the 1880's but they could make heat with coal. You need electricity for the water seperation, but thats only if youre going to be conserving your water and dont have a handy source ( like in a desert). Also you would either use elctricity as your heat source, or the sun diretly, eithe r work nicely. You do need electricity for the zeolite sorption-desorption cycle which also requires some heating/cooling ( zeolite extracts CO2 out of the atmosphere)
This thing would be great if it didn't require the natural gas or propane.
Its all about the efficiency. Home fuel cells can get up to 80% efficient with cogeneration, 40-50 without. A natural gas power plant would be very very lucky to hit 40 % efficiency, and forget about seeing that with a coal power plant. Not only that but the emissions are much cleaner than even a NG turbine, since theres no combustion, NOx is reduced significantly, its mostly just giving off carbon dioxide and water. This is not a revolution in power generation, but an evolution, so far for fuel sources weve gone from solar to wood to coal to oil and now to natural gas and maybe back to solar again. Coincidentally each transition has resulted in a massive economic boost. Also, you can use electricity and air to actually produce natrual gas, which is what they did back in the 1880's before the discovered they could mine the stuff, so in theory you could just hook up a big solar array out in the desert somewhere and make natural gas and pipe it out to people everywhere.
Yeah, and ask your average person on the street in 1977 if theyd ever heard of a company called microsoft. I doubt youd have many takers, they should pick a better name, like packard bell! you think its hewlett packard or maybe bell atlantic, but its not!
95% of it was already in place long
before he stopped smoking dope in college.
I suppose were still using 56k backbones then? Seems to me its a bit peppier than that. I also assume that there are also a coup-le of hundred nodes, and that the average person on the street doesnt even have the possibility of getting on the net. Quit spreading your fud
Youre right, it is impossible, using todays technology, just like it was impossible to build computer that can fit in the palm of your hand 50 years ago. Lets see if any Physical laws are broken in your statements of impossibility.
1: Its not impossible, were talking about 50-100 years from now, some room temp superconducter running the length of the cable will be both lightweight and conductive enough to eliminate the melting problem. Barring this, you can run a stopping voltage into it to counter the current, which is what they could have done in the experiment you mention, except that they were trying to create a current, the stopping voltage actually also helps with...
2: Its not Impossible With the stopping voltage, and some power taps into the upper atmospheres plasma, you could effectively control the location of the cable. Additionally, you coulduse this to help control tension and compression in the cable. Flexibility isnt too big a problem, most things are pretty flexible when theyre 144000km long. Think of it this way, take a foot long peice of structural steel and try to bend it, doesnt work too well. Take that same peice of steel and make it 110 stories tall, and see how much it bends in a high wind or an earthquake.
3: Would you like to back this claim up with some actual facts?
4:If this is true, then why didnt the soviets shoot down our spy satellites? Why dont the iraquis? why dont we shoot down the russians?clearly we have the capability.National territory only goes up so far, something like 160 km, since there will be a tower 50km of that way, there isnt too much room for movement, and even then, why would you want to do it?
Didnt your teacher ever tell you? Sharing is communisim and is unamerican. At least thats what mine told me, he only had one eye, and his name changed to "prime time" betweeen the hours of 7 and 11
I work at NASA Godard spaceflight center, where alot of testing like this is done, we actually can control all of the environmental conditions a spacecraft is likely to encounter (except zero G of course) What i suspect was done is that they put the baloon in a completely dark chamber, lowered the temperature, then shone a light on it with the same intensity as average martian sunlight. This was all done in an isolated chamber im sure at martian atmospheric pressure and composition as well. Its not like they took it to antarctica and released it to check to make sure it would work, although it is plausible that they could have done this additionally, but not as their sole testing.
Whats interesting is that this would also work on Venus, just fill the baloon with water, and as it drops below the point where water boils, the baloon expands lifting it back to where the water recondenses back down. Done right, and with enough baloons, this could actually cool venus down, at least to the point where the temperature is no longer above boiling.
today we live in a balance of power system, there are 3 groups that hold power, consumers, with their money, corporations, with their products and media outlets, and government with its regulation and taxation powers. Right now, the corporate aspect has become too powerful, while the government and consumer aspects have become less powerful, in response it is necessary to combine the consumers power with government power and strengthen one or both in order to reduce the power, and hence the corrupting ability, of corporations. Nader would do both, he would increase the power and independance of the government with respect to corporations and would also help incease the power of consumers.
1. How can I join
2. what needs to be shown to join the class action, use of MS products, or do you need to show that you have been harmed by ms products?
3.how will this affect alternative OS's?
Of course all of their arguments were dismissed as invalid, if one of their arguments was valid, but all the others werent, 2600 would win. Just because an argument is dismissed as invalid, doesnt mean it is, for example, evolution is often dismissed as an invalid argument but that doesnt mean it is invalid or valid for that matter.
Does this mean I can be arrested now for wearing my deCSS t-shirt? If i go out in public and start readin off the source code through a loudspeaker (electronic transmission to boot) Will Jack booted thugs come and cart me off? things to ponder
The answer to the tootsie pop one is 87, this i did in third grade, one lick at a time, no sucking on the pop itself, and no stopping until the center was reached, so the answer is 87, not 3 contrary to popular belief.
Take a pencil and draw a line on a sheet of paper, is that line a two dimensional object or a three dimensional object? Can you detect the third dimension of the line with say your finger, or by looking at it from the edge? no, but the line is nonetheless a 3 dimensional object, it just appears to be 2 dimesnional to the naked eye. Granted, if you looked at it with an electron microscope, you could see the third dimension, but its not obvious. Its the same with string theory, the dimensions are so small, on the order of 10^-32 meter that we just cant see them. hope that explains it better than everyone else
Slashdot Mirror
2.This is true, however when the NG is reformulated to extract the hydrogen, the sulfur is extracted as well. I think the figure that ive heard is its down to about 2 ppm, and the acceptable level is about 10 or so but im not sure on that. Even if they do need a catalyst that has to be swapped out, it would be like getting the oil changed on your car or something, plus the article says they will check the things and service them yearly, at which time i assume this would be done
Its all about the efficiency. Home fuel cells can get up to 80% efficient with cogeneration, 40-50 without. A natural gas power plant would be very very lucky to hit 40 % efficiency, and forget about seeing that with a coal power plant. Not only that but the emissions are much cleaner than even a NG turbine, since theres no combustion, NOx is reduced significantly, its mostly just giving off carbon dioxide and water. This is not a revolution in power generation, but an evolution, so far for fuel sources weve gone from solar to wood to coal to oil and now to natural gas and maybe back to solar again. Coincidentally each transition has resulted in a massive economic boost. Also, you can use electricity and air to actually produce natrual gas, which is what they did back in the 1880's before the discovered they could mine the stuff, so in theory you could just hook up a big solar array out in the desert somewhere and make natural gas and pipe it out to people everywhere.
Ok, ill kill 6 Billion and 1, now try to make more
I think hackers of all people would believe in porn, dont you?
2: Its not Impossible With the stopping voltage, and some power taps into the upper atmospheres plasma, you could effectively control the location of the cable. Additionally, you coulduse this to help control tension and compression in the cable. Flexibility isnt too big a problem, most things are pretty flexible when theyre 144000km long. Think of it this way, take a foot long peice of structural steel and try to bend it, doesnt work too well. Take that same peice of steel and make it 110 stories tall, and see how much it bends in a high wind or an earthquake.
3: Would you like to back this claim up with some actual facts?
4:If this is true, then why didnt the soviets shoot down our spy satellites? Why dont the iraquis? why dont we shoot down the russians?clearly we have the capability.National territory only goes up so far, something like 160 km, since there will be a tower 50km of that way, there isnt too much room for movement, and even then, why would you want to do it?
Vs their Uncompetitive OEM version ;-)
because
I
formatted
it
This is an awful, awful sig. Please change it!
or not
1. How can I join
2. what needs to be shown to join the class action, use of MS products, or do you need to show that you have been harmed by ms products?
3.how will this affect alternative OS's?