Battery Powered Tram Charges in 60 Seconds 176
SK writes to tell us that a new streetcar, powered by lithium battery, has been invented by the Railway Technical Research Institute in Kokubunji, Tokyo. The new transport is capable of speeds of 40 kph for 15 kilometers and can convert 70 percent of its deceleration energy into electricity which is then sent back to the battery which can recharge in under one minute.
Re:Correct me if I'm wrong... (Score:5, Interesting)
Re:Correct me if I'm wrong... (Score:2, Interesting)
See, that's the problem with current thinking re the carbon problem. We're just throwing more technology at the problem, technology which is subsidized entirely by the present fossil fuel economy. The only real long term solution to the carbon footprint problem is to radically re-think how we live our lives. Do we need to travel to and from work everyday when all we do is manipulate information?
How much charge? (Score:4, Interesting)
It seems we now have the ideal battery (also called a "capacitor"), now let's concentrate on creating the superconducting cables and contacts.
Re:Correct me if I'm wrong... (Score:2, Interesting)
I agree that throwing ever more Hi-tech at the problem probably won't fix anything but thinking about how we use our current low tech in different ways will. I am studying architecture and have taken many papers and read many books on sustainable building (Not just in the sense of green building either) and can tell you from my point of view it is where humanity can save the most resources. Building smaller more contained rooms saves on heating, so does building thick concrete floors. The way we use windows etc etc.
I also think that taking an open source approach to more of our research and getting rid of patents will save a lot of money and carbon dioxide emissions. Too much effort is being put in to redundancy.
hopefully this time they will stay around (Score:5, Interesting)
Re:Correct me if I'm wrong... (Score:2, Interesting)
Awesome Lithium Tech (Score:4, Interesting)
I am not a big fan of lithium ion tech. It seems very gimmicky to me; allowing manufacturers to claim that their laptop batteries last N hours when in fact that will only be true for less than 6 months, as the charge capacity of lithium ion batteries always rapidly deteriorate.
My Panasonic Y2 battery started at 6+ hours per charge, and is now, after not even three years, down to about 2.5 hours per charge.
So if the streetcar in question uses similar tech, then I would expect its range to diminish rapidly with recharges. Since it will be recharged much more frequently than any laptop would, can we even expect its battery to last a whole year before becoming basically worthless?
Interesting application (Score:3, Interesting)
Visit Seattle and ride the SLUT [nwsource.com]!
Re:Trams are the wrong solution (Score:3, Interesting)
Rail doesn't necessarily mean heavy. And trams are usually powered by low-voltage DC (relatively low: 600V as opposed to up to 25kV for a lot of trains) overhead lines, which makes pumping energy from regenerative braking back into the system relatively easy. And keep in mind also that rolling friction on steel rails is a lot less than friction from a rubber tire on a roadway.
-b.
Re:Awesome (Score:3, Interesting)
Most cities in the US don't fit that model, however. Public transit just won't work without population density and clustered areas of employment, and in the post-WWII development boom we put almost no limits on how much people could spread out. A lot of new development and zoning (at least on the east coast where I live) is beginning to take public transit into account, forcing suburbs back into more of a small-town model, with sidewalks and a centralized school, shopping district, and transit station that everyone can easily walk to. Maryland has more info up at http://www.mdp.state.md.us/smartintro.htm/ [state.md.us].
New planning like this is really most effective near an old city with effective public transit, however. Cities which primarily developed in the 50's or later were planned around individual car ownership. When each individual is driving the most effective layout is to encourage a high number of lower-volume commuting routes, and it is very difficult to make mass transit work in a setup like that.
Re:Awesome (Score:2, Interesting)
The public transportation system I described is quite real. It was from my experiences riding in Chicago. I did not, however, mention the weather. It was 15 below 0 Fahrenheit that morning. I think it "warmed" up to about 5 by the time I got home. With wind gusts up to 30 mph, I'm not even going to guess at the wind chill. I had to stand outside for at least 15 minutes each way waiting for the train. So, no. It was not a strawman.
This isn't about your freedom.
First, the GP said my attitude needed to be changed. Why does that sound like the kind of job a re-education camp would perform? This guy is saying I don't even have the freedom to think what I want. My God! If I'm not free to think, what am I free to do?
This has everything to do with my freedom. When the government controls how I get places, then the government controls everything. Where I live, what I can carry, when I can travel, where I can go and how much it will cost me are all controlled by government rules. Sorry, but giving the government that much control over my life is not what I would call freedom.
Public transportation works in Europe. Granted, there are geographical differences as well as cultural differences. If you spent enough time in the right European cities, you would probably see systems where public transportation is working.
Maybe, but that doesn't negate the fact that it is all government controlled. I hear that their system is the best in the world, but that doesn't mean I want it forced on me here in the US. What advantage does a public transport system have over privately owned non-polluting automobiles?
Here is one case study... I spent a year in Poznan, Poland (pop 567,882). In that city, there are 20 trams (streetcar) lines and 57 bus lines. The trams run center-city and through the more dense areas, with buses making up the difference.
Poland? Did they used to be communist? Aren't these people used to having the government control their lives? That takes me back to my original point. Take new Orleans for example. Katrina was on the way and the people with cars left. No government assistance required. Those that didn't have cars went to the Superdome and were stuck. We all know how that turned out. If the government gets stuck, you're out of luck! (a counter example would be the evacuation of Houston about a month after Katrina in the way of another hurricane. There was a traffic jam from Houston to Austin, about 200 miles of bumper to bumper cars. There is better planning now for such a situation.)
I'll push all that aside for now. I live in a city with about 5,000 people. It's about 20 miles from where I work, a city of about 656,000. How do I get from one transportation system to the other? How long will that take? I work from 10:00am until 7:00pm. Sometimes I have to work late. Does public transportation run until 9:00pm? Does it run until midnight? Do I want to be on public transportation after midnight?
While some own vehicles, the public transportation system has high ridership, to the point that during rush-hour one must be careful not to be crushed...
A problem I don't experience in my car. Although, I may be crushed by another car, but that is a different story.
People are not living by loud trains, but they are more comfortable with walking and riding bikes, and there are sidewalks (something quite rare in the USA). It may be 1-2 kilometers to the nearest tram stop, and that is perfectly fine by the city inhabitants.
How was that walk in the rain? Any better in the snow? How about freezing rain? Granted, I don't like driving in bad weather either, but at least I'm not standing in it.
That said, I lived right next to the tram on the 6th floor of a high-rise, and hardly noticed the tram. It wasn't much, if at all, worse than the traffic of an average suburban street in the USA.
If you live in a high-rise, then