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Solar-Powered Cars Race fron Austin to Calgary

dblizzard writes "The North American Solar Challenge race is about to start. Travelling at speeds of up to 130km/hr (80mph), these teams will race from Austin Texas to Calgary Alberta all with no non-reusable energy. Here's the race link, and here's some really cool photos of the Queens' University car."

41 of 217 comments (clear)

  1. Irony by Ron+Harwood · · Score: 2, Insightful

    Are the start and destination supposed to be ironic (oil vs solar power)?

    1. Re:Irony by Black+Cardinal · · Score: 2, Informative

      Texas and Alberta are both big oil-producing regions.

    2. Re:Irony by phasm42 · · Score: 2

      I think this is the first time I've seen someone sincerely apologize for a misunderstanding on Slashdot.

      --
      "No one likes working in a hamster wheel, and your shop smells of cedar shavings from here." - TaleSpinner
    3. Re:Irony by wankledot · · Score: 2, Informative

      That's the point. They are traveling between two oil towns. It would be like staging an anti-nuke march between 3 mile island and chernobyl. (obviously not possible, but you get the idea.) Or having a defense-of-marriage march through the middle of the Castro district.

      --
      My sig is blank, I typed this by hand.
    4. Re:Irony by gonk · · Score: 3, Informative

      A little FYI. Austin Energy leads the nation in green power. From www.austinenergy.com:

      "GreenChoice is the most successful utility-sponsored green power program in the nation with 383 million kWh in subscriptions at the end of 2004."

      robert
      (yes, I'm a GreenChoice household)

    5. Re:Irony by dubiousdave · · Score: 3, Funny

      Perhaps it's a clever new form of flamebait?

      --
      Thank you. Drive through.
    6. Re:Irony by beasstman · · Score: 2, Informative

      Enmax (the major power supplier for Calgary) also has a fairly serious program to promote alternate energy. As one poster pointed out, they have a number of windmills, and claim the local light rail runs on power from it. (I find it hard to believe they actually have the power seperated out in a special grid, I suspect they just produce *enough* power from wind to run the trains, but the marketing imagery is clever anyway)

      Users can also sign up to help pay for wind generation by paying a bit more for electricity.

      Yep, when I lived there I was a GreenMax member.

      That said, I do love the choice of Austin to Calgary for a solar race. Very appropriate...

    7. Re:Irony by tricops · · Score: 2, Insightful

      Yeah, I understand irony perfectly well and I wasn't disputing that, I just misread what he was saying. The way his comment is worded made it sound like he was referring to Alberta/Calgary as some sort of solar area which doesn't make sense. As usual, I realized the way he meant it shortly after posting and felt like an idiot. :)

      --
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  2. WTF? by Quasar1999 · · Score: 4, Funny

    Non-reusable energy? Energy cannot be created or destroyed, it simply is transferred around. What does non-reusable mean exactly? Do they mean non-renewable?

    --

    ---
    Programming is like sex... Make one mistake and support it the rest of your life.
    1. Re:WTF? by Shkuey · · Score: 5, Funny

      In this house we obey the laws of thermodynamics!

    2. Re:WTF? by orzetto · · Score: 4, Interesting

      <Thermodynamics nazism>

      Energy is divided in two parts, exergy and anergy. Their sum (i.e. energy) is constant, as the first law of thermodynamics goes.

      Exergy is the part that you can convert in any form you like. Heat at ambient temperature is 100% anergy, since it's at equilibrium with its surroundings (yet it does contain energy, because those molecules are indeed moving around). Electricity is about 100% exergy, since it can be transformed in pretty much anything. Sunrays are in equilibrium with the sun's surface, about 5000 kelvin; therefore, they are about 1-300/5000=94% exergy. Heat used in cars, coal plants and gas turbines is exergy to various degrees depending on the combustion temperature.

      As there is no such thing as a free lunch in thermodynamics, exergy is destroyed and corresponding anergy generated in any (real) process. Destroyed exergy is equal (ideally) or larger (in practice) than the energy you actually use.

      So, all energy is non-reusable, because if you use it, you corrupt it to anergy, and you can't use it again; mathematically and physically it's still there, but not in a useful form: you can't use the same sunray twice. That's why quite some time ago someone came up with the word renewable, meaning that you are quite safe if you count on the sun delivering sunrays forever (at least on human scale).

      --
      Victims of 9/11: <3000. Traffic in the US: >30,000/y
  3. Reusable solar energy! by Anonymous Coward · · Score: 3, Funny

    Great, so now I can use the same bit of sunlight over and over until I have enough power stored up to finally take over the world!

  4. Uhm by Andrew+Tanenbaum · · Score: 5, Informative

    Solar isn't reusable. There's just a lot of it.

    1. Re:Uhm by Peldor · · Score: 2, Funny

      It's going to run out eventually just like oil. We need to start weening ourselves off of this solar dependency right now!

  5. Ain't got no double negatives! by pestie · · Score: 2, Funny

    with no non-reusable energy.

    And apparently without no double negatives, too!

  6. Speeds up 80 clicks? by lheal · · Score: 3, Funny

    Why don't they just use the sunlight as direct propulsion? Then they'd go really fast.

    There's probably some reason they don't. Those people are really smart.

    Are there rules against travelling at close to light speed in these races? Oh, I see, they go throught towns. That must be it.

    --
    Raise your children as if you were teaching them to raise your grandchildren, because you are.
    1. Re:Speeds up 80 clicks? by eta526 · · Score: 3, Informative

      Actually, they have to stay within the speed limit. That's the only reason they don't go faster. UMR won last time. I'm hoping they can take it again. http://news.umr.edu/news/2005/solarprkit05.html

  7. neat by Anonymous Coward · · Score: 2, Funny

    here's some really cool photos of the Queens' University car.

    Down here in the States, it's hard enough to get equal marriage rights... but in Canada, there is a whole University just for Queens!

  8. Fron? by agm · · Score: 2, Informative

    Can't the editors do something so simple as spell check a word a 6 year old can spell?

  9. Ummm... by T_R_J · · Score: 2, Funny

    What is Fron? Fron Fron...?? ....From?

  10. Good luck! by Mr2cents · · Score: 2, Funny

    .. and I hope it will become a better success than the arctic winter solar car race.

    --
    "It's too bad that stupidity isn't painful." - Anton LaVey
  11. Solar Lifetime by Valacosa · · Score: 2, Interesting

    I'll be rooting for my home team.
    How much energy does it take to make a solar panel? Once in a while I hear someone say that solar panels take more energy to manufacture than they will produce in their entire lifetime, but I don't buy that without any numbers...

    --
    "Live as if you'll die tomorrow." Ridiculous. You could die later today.
    1. Re:Solar Lifetime by Anonymous Coward · · Score: 2, Informative

      The numbers I have been taught (studying sustainable development) is that a solar cell works with semiconductors, preferrably rather rare such ones, such as indium for instance. These minerals are at sparse concentrations when mining, so the energy consumtion is indeed great. However, a modern photovoltaic solar panel has an efficiency of somewhere 15%-20% of incoming energy from the sun. The energy needed to mine what's needed measures to somewhere between two and five years (depending on type. there are a dozen of them) of its lifetime in production. Solar cells usually run for around twenty years, so somewhere between one tenth and a fourth of its lifespan is used just to make up for its own production.

  12. Route by JeiFuRi · · Score: 2, Informative

    I wonder what route they will be taking. But anyways, heres a nice idea of the distance between the two locations from Google Maps

  13. Cafeine-powered Editor Spell from like pron by Anonymous Coward · · Score: 2, Funny

    no non-reusable energy

    no non-nonsense editing

  14. Re:WTF? - Entropy! by BrianMarshall · · Score: 2, Informative
    It is true that energy is neither created nor destroyed. However, gasoline is a highly concentrated, relatively low-entropy source of energy that can be used to do things; after it is used, the energy is still around, but it is in the form of heat - first in the engine and exhaust, then in the air, then just around - a relatively high-entropy form of energy.

    In other words, gasoline is non-reusable in the sense that you can get work out of it when you burn it, but once it has been burned, it is burnt.

    --
    "When the going gets weird, the weird turn pro" -- HST
  15. This is Uber smart :) :) :) by John+Seminal · · Score: 4, Interesting
    This is the smartest way to build new technologies. Find some really smart science kids (well maybe not kids, but at my age people in their 20's are puppies).

    Anyways, find these smart pups and have an open competition. Not only will the smart kids find ways to build things, but they must be economical. It is not like a lab at Motorola with millions of dollars.

    And third, patent everything these kids do, by a univeristy or some trusted public group, and let anyone use the patents for free (except Microsoft, fuck them).

    The genius of this system is kids love to compete and show off their genius. They will do it all for pride and because it is interesting. It stimulates their mind, they get caught up in it, and they build fantastic things. Meanwhile, everyone else benifits, no monopolies from these new inventions. And maybe the public group that holds these patents could use them as leverage against large companies, to force them to pay a fee, and in some cases to ban them from using the patent for their preditory buisness practices.

    This is how a community can help itself without giving one CEO compelete power to ruin lives.

    And I hope these kids build things that soon will be used in real cars, to reduce the amount of gasoline needed. Wouldn't it be wonderful to have cars with 100 miles per gallon of gas, and that emitted 1/10th the amount of pollution? It is possible.

    --

    Rosco: "If brains were gunpowder, Enos couldn't blow his nose."

    1. Re:This is Uber smart :) :) :) by Tune · · Score: 2, Informative

      Go to Soviet Russia for communist technology "contests" and see how far that sort of "innovation" takes you.

      (That may require time travel innovation first, but that's not my point.)
      As a programmer I have the greatest respect for innovation by Soviet colleague. These guys put astronauts into space in stuff that's more reliable and energy-efficient than anything NASA or ESA could come up with, yet their "hi-tech" computer hardware had a disadvantage of some 20 years. Imagine that.

  16. Looks like their web server is solar powered by Omega1045 · · Score: 3, Funny

    See subject line. The sun is just going down here in Austin, and I see their server is fried. Using the reasoning I have learned here at Slashdot, that means that their server must be solar powered!

    --

    Great ideas often receive violent opposition from mediocre minds. - Albert Einstein

  17. speed limits, safety? by SuperBanana · · Score: 4, Interesting
    Travelling at speeds of up to 130km/hr (80mph), these teams will race from Austin Texas to Calgary Alberta all with no non-reusable energy.

    That will be an impressive feat, with the US Federal highway speed limit of 65, and a Canadian speed limit on major roads up there not much faster; 100km/hr to 120km/hr, if I recall on my last trip?(it was months ago, sorry). Why is it that nobody else is allowed to break the speed limit, but these guys are? Particularly given their vehicles have about zero crashworthyness?

    I'm also curious how they plan to keep solar cars from mixing with general traffic; there has been at least one fatal accident involving a solar car (which came apart like paper mache) a few months ago when a solar vehicle was being tested.

    Honestly, what was wrong with an enduro race on a closed race circuit? At least then it would be more controllable, and emergency/rescue crews would be barely a minute or two from any participant. There are numerous reasons we do our racing OFF public roads...

    1. Re:speed limits, safety? by (startx) · · Score: 2, Informative

      There hasn't been a Federal Interstate speed lmit in, oh, 10 years now. Each state is allowed to set their own Interstate speed limits. For example, it's 70mph through most of MO, and 75 in CO I think. Interestingly, the last time I drove through KS to CO, everyone slowed down when crossing the border, even though the speed limit went up! I think it had something to do with the sign that said "Speed limits are enforced."

      Back On-topic: Go UMR! Time for Solar Miner IV to win a second race!

    2. Re:speed limits, safety? by joshstaiger · · Score: 2, Informative

      That will be an impressive feat, with the US Federal highway speed limit of 65, and a Canadian speed limit on major roads up there not much faster; 100km/hr to 120km/hr, if I recall on my last trip?(it was months ago, sorry). Why is it that nobody else is allowed to break the speed limit, but these guys are?

      This alternate article states that each car must obey local speed limits.

      So it sounds like the race becomes more about efficiency and conservation of energy through the cloudy spells than it is about raw speed.

      --
      http://joshstaiger.org/

    3. Re:speed limits, safety? by fimbulvetr · · Score: 3, Interesting

      Although I'm pretty young and should drive fast and reckless, my A4 gets about 19-23mpg at 80MPH and about 34-38mpg at 60. I rarely drive to/from work faster than 55-60. Honestly, why would I? It doesn't feel like a race anymore once you slow down. It's kinda like that time when you forget to where your watch and never put it on again because of your newly discovered freedom.
      Not to mention how much longer one's car will last because you're not driving it like your insane.
      I see these benefits for taking my time:
      #1. Almost 2x the mpg.
      #2. Longer lasting car.
      #3. I don't live my life in a race.
      #4. I don't need to worry about speeding tickets.
      #5. (Probably) less accidents - my reaction time stays the same but my braking distance decreases.

      Tell me why it's cool to drive (not) really fast again? People like to think they're rebels over here because they can drive over 90. Pathetic.

      Oh, I even forgot to discuss the manslaughter charges when you get busted for speeds 100+. (Could be higher or lower in your state)

    4. Re:speed limits, safety? by ferds32 · · Score: 4, Informative

      I'm also curious how they plan to keep solar cars from mixing with general traffic; there has been at least one fatal accident involving a solar car (which came apart like paper mache) a few months ago when a solar vehicle was being tested.

      The rules of this race and the World Solar Challenge are similar. (I believe this is deliberate, so a car built for one race can race in the other.) The cars are required to have escort vehicles at all times in the World Solar Challenge. I should imagine the American race would be the same.

      Honestly, what was wrong with an enduro race on a closed race circuit? At least then it would be more controllable, and emergency/rescue crews would be barely a minute or two from any participant. There are numerous reasons we do our racing OFF public roads...

      Racing on the roads gives vastly more public exposure to the technology. The public, at least in outback Australia and Japan, are facinated by the cars. Taking a few hybrids along means people also see the practical application of some of the technology and can even take a hybrid for a drive! None of that would happen on a closed circuit. There are circuit races as well, such as the Dream Cup, but they serve a quite different type of racing.

      --
      Tom Rowlands
      (Sorry, I can't sign this.)
  18. Hot Damn Tamale! by Sponge+Bath · · Score: 4, Funny

    The way the weather has been in Austin this last month, they should have enough power to fly to Calgary... if they don't burst into flames first.

    I have a mental image of a non-air conditioned vehicle dodging 18 wheelers on I-35.

    Hell on Earth. (Welcome to Texas)

  19. Re:WTF? - Entropy! by dreamchaser · · Score: 2, Informative

    That's not *entirely* true. A turbocharger uses the power from the waste gasses(exhaust) to drive the turbine that then adds boost to the air/fuel mix. So in that sense, the gasoline is used twice ;)

  20. Fron by Bullseye_blam · · Score: 2, Insightful

    I'm sorry to complain, but Slashdot's quality has really gone to hell lately. To be honest, I don't understand much about the editing process here, but something really needs to change. Between the mis-spellings and constantly late and duplicate articles, I think this web site could stand for some improvement.

  21. Racing from tyranny to freedom by WillAffleck · · Score: 2, Interesting

    too bad it's uphill, but at least most of the route is flat.

    One interesting impact will be that if you fail to make it all the way, you start off receiving more solar radiation (power) at the beginning of the race than you have at the end of the race, as you start closer to the equator than you finish at.

    Thus, a system with a slightly better power storage system (battery) and more efficient battery cycles, might have an edge in the race over a more efficient vehicle with a smaller battery storage and/or less efficient battery cycles.

    I remember being a founding member of SESCI, Inc. way back when, so this route is really fun ...

    --
    Will in Seattle
  22. Re:Could anyone tell me the purpose of this race? by vlado4 · · Score: 2, Informative

    I have been on the University of Minnesota Solar Vehicle Project for the past four years and this is the first race that I will be missing due to graduation. To answer your question, it is important to keep the competition going. No, cars are not completely re-designed every year, however constantly rebuilding them allows a proper evolution to occur. The UMN team is particularly interesting because we try to do as much of our own work as possible. Power trackers, motor controller, motor, encapsulating the cells, battery controller, etc, are all desgined by us. This doesn't always guarantee the best results vs. some of our competitors who outsource much of their cars to professional companies, but gives us a great feeling of achivement. Out current car, Borealis III, has few revolutionary improvements over Borealis II, but we've fixed many problems that have plagued us in the past and improved our reliability immensely. If we go back five years ago, the car we had then was dramatically inferrior. Now we have an all digital communication system (BDLC), robust power trackers, and good encapsulation. The carbon fiber body of the car improved a lot too. Before it used to crack after significant wear. For more info, check out the official lwebsite of the UMN Solar Vehicle Project. [http://160.94.140.26/%5D BTW, we are one of the top teams, the last race, which was from Chicago to LA was tough, but we placed second afret UMR (their array generated much more power). There is also a endurance race around a track that happens in Topeka Kansas every year, which we often place first in.

  23. Re:Could anyone tell me the purpose of this race? by Infinityis · · Score: 2, Insightful

    In addition to the other replies to your post, there's the engineering challenge to it.

    Lots of us on solar car teams are there because we wanted something classes can't/don't/won't offer: practical experience. You can get all the equations right on the exam, but if you don't know how it connects to the real world, it's no good. For many students, this is one of the few ways to do something fun and challenging that's related to their coursework in some way.

    Also, it looks good on a resume. Lots of people would rather hire someone with experience than someone without.

    But that's all for the perspective of why the student would want to do it. As for why the race officials want to do it, I'd guess it's mostly the same reasons, it's fun, it's educational, it's good for the environment, and they probably secretly hope that one team someday will come up with an excellent idea with practical effects (if it hasn't happened already).

  24. UMR by Otto · · Score: 2, Informative

    UMR has won three times now, I think. Before that, they always did pretty well. The solar car team is a reasonably big deal at Rolla, what with there being little else to do in that hellhole of a town. I should know, I was there for 5 years. :P

    And if they lose, well, they always have St. Pats in which to drown their sorrows. :)

    --
    - Give a man a fire and he's warm for a day, but set him on fire and he's warm for the rest of his life.