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Company Builds Fast Charging Station For Electric Cars

thecarchik writes "Japanese based JFE Engineering has released its ultra-fast charge station. Designed to comply with the CHAdeMo standard developed by Tokyo Electric Power Company, Nissan, Mitsubishi, Subaru and Toyota, the system is capable of charging a 2011 Mitsubishi i-Miev from empty to 50% full in just three minutes. Even just three minutes plugged into the fast-charge station was enough to enable a standard 2011 Mitsubishi i-Miev to travel a further 50 miles before further charging was required."

65 of 359 comments (clear)

  1. Some quick math says... by JesseL · · Score: 4, Interesting

    This thing is putting nearly a quarter megawatt (240kw) drain on the power grid during use.

    I wonder if it has some sort of means of load smoothing and a limited duty cycle, or if it's going to need its own substation.

    --
    "Prefiero morir de pie que vivir siempre arrodillado!"
    1. Re:Some quick math says... by MichaelSmith · · Score: 5, Insightful

      I would be inclined to stand back before switching the power on. And I don't think I would leave the kids in the car during the charging operation.

    2. Re:Some quick math says... by Anonymous Coward · · Score: 5, Informative

      350*70=24.5 kW, not 240

    3. Re:Some quick math says... by shadowblaster · · Score: 2, Informative

      The article says it's only 62.5KW per charging station.

    4. Re:Some quick math says... by c0lo · · Score: 4, Informative
      From TFA (close to the end):

      But for retail locations and gas stations, the 62.5 kW power requirements of each charger should not be impossible to accommodate in all but the remotest of locations.

      In addition, even the remotest location can accommodate it: just install a generator burning gas (I'm kidding but only half-kidding: remote locations in which you can currently refill your tank will have petrol and a generator will consume less per kWh generated than the car's petrol engine...be it only because it doesn't need to change gears/etc).

      --
      Questions raise, answers kill. Raise questions to stay alive.
    5. Re:Some quick math says... by TooMuchToDo · · Score: 5, Insightful

      It will probably rely on some sort of capacitor-based local storage, so it'll always be drawing power from the grid, but at a steady pace awaiting the next charge.

    6. Re:Some quick math says... by Anonymous Coward · · Score: 5, Informative

      ...16kWh battery pack of the Mitsubishi i-Miev...

      ...charging a 2011 Mistubishi i-Miev from empty to 50% full in just three minutes

      50% of 16kWh is 28800000J. 28800000J divided by 180 seconds (3 minutes) is 160000 J/s, or 160kW.

    7. Re:Some quick math says... by Animats · · Score: 3, Informative

      I wonder if it has some sort of means of load smoothing and a limited duty cycle

      Yes, it does. One of the charging stations described itself has a battery, for load smoothing purposes.

      That's a win for stations without heavy power available. But busy stations are going to need a high-current feeder, so that can charge one car after another during busy periods.

    8. Re:Some quick math says... by adolf · · Score: 3, Interesting

      Hmm. Kind of like a Chevy Volt.

      I just did some quick Googling, and 62.5kW worth of dedicated genset is around $13k to $25k for generating equipment alone. So, to pick a number, it might cost a remote service station $80k to install a single generator-backed rapid charge station (including installation, signage, fancy Toyota-approved hardware, profit, etc).

      It wouldn't take a huge amount of regular demand for such a thing to be practical, but I'd think that $80k would still a pretty big chunk of money for such a remote place, which brings up a pretty big catch-22: There won't be demand until facilities exist, and facilities won't exist until there is demand.

    9. Re:Some quick math says... by captainpanic · · Score: 4, Interesting

      I would be inclined to stand back before switching the power on. And I don't think I would leave the kids in the car during the charging operation.

      But you're happy to have your kids in a car while you fill it up with 50 liters of some toxic and highly flammable liquid or even gas.

    10. Re:Some quick math says... by MichaelSmith · · Score: 4, Insightful

      I would be inclined to stand back before switching the power on. And I don't think I would leave the kids in the car during the charging operation.

      But you're happy to have your kids in a car while you fill it up with 50 liters of some toxic and highly flammable liquid or even gas.

      You don't have to heat the fuel tank to do that.

    11. Re:Some quick math says... by Teancum · · Score: 2, Interesting

      Presumably this is going to be something that would be installed in a commercial business where the recharging station would be something that would justify the expense and infrastructure access for industrial power consumption. The research is also being done in Japan, where issues of getting the raw infrastructure necessary for this to happen are not really a problem either as long as you have the money (again, not in short supply for business purposes in Japan).

      I've used as much as a megawatt for industrial purposes on a single machine before, and that particular facility didn't really have any significantly different power supply than most other medium to small factories for the city that I live in. I've certainly seen similar power supply boxes that serviced convenience stores that typically dispense gasoline, so "upgrading" to something like this would be relatively trivial.

    12. Re:Some quick math says... by dilvish_the_damned · · Score: 3, Funny

      Capacitor storage is 50% efficient

      Maybe they could use twice as many capacitors at half the size to get 100% efficiency. Assuming they use the good half.

      --
      I think you underestimate just how much I just dont care.
    13. Re:Some quick math says... by GaryOlson · · Score: 2, Funny

      You forget, when items of the same functional type interact, they multiply. 50% x 50% = 2500%.

      --
      Every mans' island needs an ocean; choose your ocean carefully.
    14. Re:Some quick math says... by v1 · · Score: 4, Interesting

      You don't have to heat the fuel tank to do that.

      True. But instead, you're venting HIGHLY flammable AND explosive gasses out of the tank and back down the hose into the station's tank. Most people don't know about that. (liquid gas by itself is NOT explosive, it's merely flammable - gas vapor OTOH is highly explosive, which is why we use it for fuel) When you're pushing 15 gallons into the tank, there's a reason there's not a whoosh of gas vapor out around the nozzle from the displacement occurring.

      They do that of course (1) as a safety measure and (2) to save a buck or two in the long run, as that vapor goes back to the storage tank (instead of sucking in air to replace the lost gas) and some of that will condense back into gas for them to sell.

      Know what happens when there's a problem with the vapor backflow? Nothing. Well, maybe a kaBOOM but what I mean is there's no safety on it. Know what happens when the temps get too high or current inrush spikes? The fast charge system halts the fill. So you see, it's actually safer than a gas quick fill. There's a computer carefully watching many aspects of the charge all the time.

      The gas station really is already giving you a quick-fill, by bending the safety of the system a bit. Don't you hate it when you happen to use a pump somewhere on a road trip that's really SLOW? I remember having to wait 10 minutes for a fill once, in the dead of winter on a road trip. I waited inside, and when I got outside it had JUST finished... AND had just started gushing fuel all over the ground because the full-shutoff failed. (probably the pump and the shutoff were both having issues with the cold, it was well below zero, and it was diesel fuel)

      Also after watching the video you will notice he waited for a FULL charge. They slow down the rate when it gets closer to full. The article states 50% charge in 3 minutes, and yet it took him over 10 to get 100% charge, so the remaining 50% requires 7 more minutes. Probably a higher ratio than that even, as he said he didn't get it fully discharged. Looks like they're probably taking the conservative side of safe on this still.

      --
      I work for the Department of Redundancy Department.
    15. Re:Some quick math says... by Rei · · Score: 3, Informative

      noting that most electrical storage devices that work in this manner have had run-away discharges and other problems that have caused burns with even something as simple as a laptop recharger.

      Misconception: "All batteries are the same".

      Reality: Different battery chemistries have *very* different properties. Excepting Tesla and their partners, the types of batteries you find in EVs are *not* the same type you find in laptops. They're a chemistry chosen specifically for dramatically greater stability and longer life (at the cost of some energy density). And even in Tesla's case, they put *way* more safety measures into their batteries than you find in a laptop pack. Each cell is kept inside of a "can" to prevent failures from propagating to other cells, for example.

      In catastrophic failures, traditional li-ion/li-po cells burn vigorously, while phosphate cells smoke and manganate cells do nothing (as a general rule).

      --
      Trump's plan to get rid of Mueller appears to be 'be so guilty of so many things that Mueller works himself to death.'
    16. Re:Some quick math says... by Rei · · Score: 3, Interesting

      When you charge a battery, you are ALSO doing an energy conversion from electrical to chemical. That's much more hazardous.

      Defend your assertion that storing energy in chemical bonds is more dangerous than forcing combustible fuel-air vapors from a gas tank by injecting more gasoline.

      If something goes wrong, in the best case you kill your battery (excess heat), and in the worst case it blows up sending shrapnel everywhere

      Name a single modern electric car that *either* of these have happened to. There were thousands on the roads in the late '90s/early '00s, and there's now thousands of Tesla Roadsters. Heck, point me to a single case of a phosphate or a manganate cell exploding under *any* circumstances. These things are used for power tools, RC planes, etc now, you know.

      The sort of abuse these cells can take is just absurd. Have you seen A123's latest cells? Check them out. They're pumping 300A into 15Ah cells and they're barely getting warm from it. These sort of cells can be discharged down to zero, ran under extreme temperatures, and all sorts of other stuff, no problem.

      --
      Trump's plan to get rid of Mueller appears to be 'be so guilty of so many things that Mueller works himself to death.'
    17. Re:Some quick math says... by Rei · · Score: 3, Funny

      Let me complete your sentence:

      "Capacitor storage is 50% efficient," I wrote on the electrical engineering exam that I failed.

      --
      Trump's plan to get rid of Mueller appears to be 'be so guilty of so many things that Mueller works himself to death.'
    18. Re:Some quick math says... by MattskEE · · Score: 2, Informative

      I assume you're referring to the famous two capacitor problem, where charging an empty capacitor from a charged capacitor will always lead to 50% energy loss, once steady state is reached. The trick is that in order to reach steady state there must be loss in the system. The inefficiency applies if you use only a resistance (e.g. of wiring and a relay/switch/mosfet/whatever) to limit the current into the capacitor. If on the other hand an inductance is used to limit current then efficiency can be close to 100%.

      http://www.smpstech.com/charge.htm

  2. Still skeptical about all-electric cars by bogaboga · · Score: 3, Funny

    I have never owned or even driven one save for a golf cart. My experience with the golf cart leaves me doubt as to whether an electric car can deliver enough torque to climb steep inclines.

    Heck, what happens when you are stuck in snow all the while, the spinning of wheels eating away at your juice? Scary, isn't it?

    1. Re:Still skeptical about all-electric cars by MichaelSmith · · Score: 4, Insightful

      I have never owned or even driven one save for a golf cart. My experience with the golf cart leaves me doubt as to whether an electric car can deliver enough torque to climb steep inclines.

      Have you tried a Tesla? I hear they are fast.

      Heck, what happens when you are stuck in snow all the while, the spinning of wheels eating away at your juice? Scary, isn't it?

      Heck, what happens when you are stuck in snow all the while, the spinning of wheels eating away at your fuel? Scary, isn't it?

    2. Re:Still skeptical about all-electric cars by TooMuchToDo · · Score: 4, Informative
      My Tesla Roadster launches off the line faster than any other exotic vehicle I've driven (including a Lamborghini Murcielago and the Ariel Atom). What does that? Torque, and lots of it. Electric motors have full torque from 0 rpms, unlike internal combustion engines that have a limited torque band (and hence, the need for inefficient transmissions).

      And regarding the snow? Yea, electric cars do just fine there:
      http://www.youtube.com/watch?v=tH_mSJC21f8

    3. Re:Still skeptical about all-electric cars by bogaboga · · Score: 3, Insightful

      Heck, what happens when you are stuck in snow all the while, the spinning of wheels eating away at your fuel? Scary, isn't it?

      When stuck in snow, the need to keep warm and therefore keep the engine running consumes fuel. When you finally run out of gasoline, you can replenish your supply via some container. How the heck do you do that if your primary source of energy if a battery? This is the problem.

    4. Re:Still skeptical about all-electric cars by blackraven14250 · · Score: 4, Insightful

      My experience with the golf cart leaves me doubt as to whether an electric car can deliver enough torque to climb steep inclines.

      Er, what? When dealing with electric motors, you have much more torque than a comparable gas motor.

    5. Re:Still skeptical about all-electric cars by Tynin · · Score: 5, Funny

      That is when you go to the grocery store, buy all their AA batteries, wire them in parallel and hope it is enough to get you to the next volt station.

    6. Re:Still skeptical about all-electric cars by MichaelSmith · · Score: 3, Insightful

      Extreme environments pose challenges for vehicles. There are examples you can point to where EVs may not be appropriate. But say I want to camp in the desert. The nearest petrol station is 1000km away. I could use a bank of photocells to charge my vehicle on site.

      And BTW 1000km is quite realistic for remote areas in my country.

    7. Re:Still skeptical about all-electric cars by Jeremi · · Score: 2, Informative

      How the heck do you do that if your primary source of energy if a battery?

      You could plug the car in... or carry around a spare container of electricity (aka a battery), or a generator and some gasoline, I suppose.

      --


      I don't care if it's 90,000 hectares. That lake was not my doing.
    8. Re:Still skeptical about all-electric cars by moosesocks · · Score: 2, Interesting

      The Atom is a ridiculous car. I'd actually like to see a drag race between it and the Tesla Roadster.

      --
      -- If you try to fail and succeed, which have you done? - Uli's moose
    9. Re:Still skeptical about all-electric cars by MichaelSmith · · Score: 3, Interesting

      I have no idea about this sort of thing, but I would imagine that electric vehicles would do better in cold weather climates. At least you would not have to keep the motor running because it won't start if you don't...

      One factor is that there is less energy lost as heat in an electric vehicle so running a heater will increase power consumption. You might be able to recover some heat from the batteries and motor though. Does anybody know how the heater (if it exists) in the Tesla works?

    10. Re:Still skeptical about all-electric cars by Teancum · · Score: 2, Informative

      The electric heater in the Tesla Roadster is a simple electric space heater type like a home space heater that draws power from the battery system. This includes the "defroster" for the windshield.... so there isn't a "warm up" period to get it to work like is found with an internal combustion engine. There is also an air-conditioner, but that is a simple electric pump with vehicle grade refrigerant... again more like something you would have at your home. To me, it would seem as though the air conditioner would be more efficient as it wouldn't have to be fighting the heat from inside of the engine compartment like it does with an internal combustion engine.

      There is a cooling system for the battery pack, and I'm not entirely sure if some of that heat energy from the charging/discharging of the batteries can be used within the cab or not. For those times you would need that heat, I'm not entirely sure it would be sufficient for heating up the cab of the car when it was useful or necessary. Based on what I've read about the Roadster, however, that doesn't seem to be used at all and what cooling is needed for the battery pack is dealt with through a separate radiator.

  3. Re:I'll wave when I drive past you ... by oldspewey · · Score: 5, Insightful

    they lack the range to be useful outside of a commuter scenario

    And that scenario only makes up, what, about 80% of the passenger car miles driven in North America?

    --
    If libertarians are so opposed to effective government, why don't they all move to Somalia?
  4. Re:I'll wave when I drive past you ... by MichaelSmith · · Score: 3, Interesting

    The burning of oil is non-reversable. Once used it is gone for good. Batteries may degrade with use but the original material is still there and available for reconditioning.

  5. Re:I'll wave when I drive past you ... by John+Meacham · · Score: 2, Insightful

    The way to make a hydrogen car viable is to take your nth generation series hybrid car and replace the engine/generator with a hydrogen fuel cell. Once you are mainly using electricity off the grid, you only need to refill your gas tank occasionally, since you are only doing it every now and again, going to a hydrogen dispensary is less of an issue, even if there isn't one right around the corner. As hydrogen/electric cars become more palatable, hydrogen fuelling plants become more common, eventually you don't need as big of a battery to get between them.

    A migration path is key. series hybrid cars let companies experiment with different supplimental energy sources without producing vehicles completely dependent on some external infrastructure.

    Heck, I'd like to see a 'standard' for pluggable electric generators in series hybrid cars, pull out the diesel engine, replace it with a hydrogen fuel cell, or a bigger battery pack, or just leave it out and have a pure electric car.

    --
    http://notanumber.net/
  6. Re:I'll wave when I drive past you ... by CrazyJim1 · · Score: 2, Funny

    So you can go over 900 miles with your car. Thats over 9000 decimiles.

  7. Re:Cold fusion by bennomatic · · Score: 2, Insightful

    Oh and you math geeks, figure out how many pounds of coal was burned to charge that battery halfway.

    How about none? I'm not a huge fan of nuclear power, but guess what runs the grid in much of Japan?

    --
    The CB App. What's your 20?
  8. Re:I'll wave when I drive past you ... by TooMuchToDo · · Score: 2, Informative

    Electric vehicles will become widely available starting in 2011. The current Administration supports a goal of one million electric vehicles on the road by 2015. A previous PNNL study showed that America’s existing power grid could meet the needs of about 70 percent of all U.S. light-duty vehicles if battery charging was managed to avoid new peaks in electricity demand.

    http://www.pnl.gov/news/release.aspx?id=365

    I'm not that worried. There is plenty of nighttime generating capacity.

  9. Re:I'll wave when I drive past you ... by mark-t · · Score: 4, Insightful

    I think that, on some level, owning a car actually represents a certain measure of personal freedom to many individuals in our society: specifically, the freedom to be able to go to and fro, wherever one wants, and whenever they want. I think that this association is made subconsciously even if they don't actually exercise that liberty. To that end, I believe that people's problem with the range of EV's is less of an issue of actually needing a really large range on a daily basis and more an issue of having the freedom to drive almost anywhere they might want to on a spur of the moment, if they should so choose.

  10. Still too slow, Hydrogen is endgame by SuperKendall · · Score: 2, Insightful

    Even three minutes is a long time to spend actually at the charger, and as another poster noted that produces a hell of a load on the electrical grid which limits the practicality of deployment for further speed improvements in charging.

      I saw an article a bit ago doing the math about how many cars can move through a electric equivalent of a gas station, and something like 10x more gasoline powered cars are able to fuel up FULLY over the course of an hour. And of course if you are only charging for 50 miles station congestion will only be worse.

    Purely electric cars are simply not a practical thing, and really don't mesh well with how people like to use cars in America.

    That's why I think the alternative fuel of choice will (and should) be Hydrogen. People (consumers and stations and providers) already know how to deal with liquids, it's just an adaptation of existing infrastructure.

    Yes it's bloody hard to store and expensive to produce right now. But imagine how much less so it would be (especially production) if the same amount of money were being poured into R&D around Hydrogen cars as we see being poured into electric and solar power.

    --
    "There is more worth loving than we have strength to love." - Brian Jay Stanley
    1. Re:Still too slow, Hydrogen is endgame by NeMon'ess · · Score: 2, Informative

      I saw an article a bit ago doing the math about how many cars can move through a electric equivalent of a gas station, and something like 10x more gasoline powered cars are able to fuel up FULLY over the course of an hour.

      That's why there's an alternative proposition to use replaceable battery packs. Pull the car in to the station and a mechanical device removes the tamper-resistant-and-registered bank of batteries from the car. Then it lifts a charged pack in. This also means the owners don't have to spend thousands of dollars after so many charges for a new set of batteries.

    2. Re:Still too slow, Hydrogen is endgame by Zebedeu · · Score: 2, Insightful

      But all of that is mitigated by the fact that you can charge at home.

      For the daily commute with an electric, most people wouldn't even have to stop at a gas (electricity?) station.
      If you imaging only 10% of the people would be using the station to recharge, then the usage would be pretty similar to that of the current gas stations.

      The weekends could be worse, though.

    3. Re:Still too slow, Hydrogen is endgame by swillden · · Score: 2, Insightful

      So who will be taking old battery packs out of circulation then? Who pays for replacing them, and how?

      You could just be buying and selling battery packs every time you refill. Over time, as a pack degrades, it becomes less valuable until eventually it's not usable by anyone who drives farther than the grocery store, and then not even them. At that point, the pack is being bought and sold for little more than its scrap value, so either the filling station or the vehicle owner may choose to scrap it.

      The value of a battery pack has four components:

      1. The current capacity (higher-capacity batteries will get you further before you have to stop for another swap).
      2. The net present value of the future capacities in each usage cycle (effectively, the longevity of the battery).
      3. The scrap value of the battery components.
      4. The value of the currently-stored energy.

      Given reliable ways to measure 1, 2 and 4, I think it would be possible to create a robust and fair market for battery packs. The biggest challenge would be establishing a system for valuing capacity. The problem is that it wouldn't be a linear -- a 100-mile capacity is worth more than twice as much as a 50-mile capacity, even ignoring the issue of capacity in future cycles. But you can't just establish a curve by fiat; it needs to be market-driven. If the battery valuation were based on a national battery market, and stations were required by regulation to use current exchange prices for battery purchases/sales (perhaps plus a small service charge), then stations would still be free to compete on the price of the energy they add to the batteries.

      Too complicated to work? Maybe. Making it work at all requires having very reliable and standardized ways to measure current capacity and estimate future capacity. It's a possibility, though.

      --
      Note to ACs: I usually delete AC replies without reading them. If you want to talk to me, log in.
  11. Re:I'll wave when I drive past you ... by TooMuchToDo · · Score: 3, Insightful

    I agree completely. As with most issues, it's a matter of separating the emotional part from the practical part.

  12. Some sources says it's not CHAdeMO compliant by iktos · · Score: 3, Informative

    This source also has some more technical details, like charging current, how much current the charging station will draw from the grid (20kW), that the charging station has twin batteries with different properties, that car makers need to adopt new battery types for it to work:

    http://techon.nikkeibp.co.jp/english/NEWS_EN/20100621/183598/

  13. Re:Cold fusion by Rakishi · · Score: 2, Interesting

    Electric engines are roughly 3-4 times as efficient as gasoline ones. So you get 3-4 times the effective energy density out of batteries.

    More importantly you don't need that much energy, almost all car rides are short and electricity can be recharged at home unlike gasoline.

    Oh and you math geeks, figure out how many pounds of coal was burned to charge that battery halfway.

    Less pollution wise than you'd get from gasoline, someone did look into it. Natural gas is a lot better, and used in quite a few places, but even coal beats out gasoline engines.

  14. Re:Holy Carp... by Nursie · · Score: 2, Informative

    I'm sorry, but really, hydrocarbons are not a liquid form of hydrogen, and cars are not powered on hydrogen now. Those things are just wrong!

    Your post I find amusing, as it posit a world with abundant hydrogen, looking for a way to make it useful!

  15. Not good enough! by Anonymous Coward · · Score: 5, Funny

    I, for one, refuse to buy an electric vehicle until it has a range of 1000 miles on a single charge, and can be fully recharged in under 30 seconds. Anything less is completely impractical. I also want 12 cup holders. When they achieve this performance level, I will find another rediculous excuse not to buy one.

    And I will continue to insist on my god given right to mis-spell rediculous.

  16. Re:Misleading summary by c0lo · · Score: 2, Informative
    Some explanations from the Battery university:

    Some charger manufacturers claim amazingly short charge times of 30 minutes or less. With well-balanced cells and operating at moderate room temperatures, nickel-cadmium batteries designed for fast charging can indeed be charged in a very short time. This is done by simply dumping in a high charge current during the first 70% of the charge cycle.

    In the second phase of the charge cycle, the charge current must be lowered. The efficiency to absorb charge is progressively reduced as the battery moves to a higher state-of-charge. If the charge current remains too high in the later part of the charge cycle, the excess energy turns into heat and high cell pressure. Eventually, venting will occur, releasing oxygen and hydrogen. Not only do the escaping gases deplete the electrolyte, they are highly flammable!

    --
    Questions raise, answers kill. Raise questions to stay alive.
  17. Re:Cold fusion by iamhassi · · Score: 4, Interesting

    "Electric engines are roughly 3-4 times as efficient as gasoline ones. So you get 3-4 times the effective energy density out of batteries."

    Sure, but who wants to buy a car that only gets 100 miles, then needs to be recharged every 50 miles? This might be a good second or third car, but it's not that practical as your main vehicle, and the fact that an electric vehicle must be charged nightly limits it to only being useful to homes with garages.

    This is why SUVs have been so popular in the US despite their poor gas mileage. You can fit 5 to 7 adults comfortably and still have room for luggage.

    Electric cars will fail, and series hybrids like the Chevy Volt will succeed. When the batteries run low a gas generator keeps the batteries charged enough to power the vehicle. This is brilliant: I get my electric car for my short daily commutes, but I still have gas for those rare times when I need to drive hundreds of miles in a day. I have the best of both worlds with no sacrifices.

    Also series hybrids means we can finally use turbines: gas turbines are the most efficient engine. While a gasoline engine is only 20-30% efficient, a gas turbine is over 80% efficient. In 1999 GM made a EV1 Series hybrid using a turbine generator. The vehicle achieved up to 100mpg while charging the battery using 90s technology and a 220 lbs turbine (modern turbines are much smaller)

    In ten years when series hybrids become the norm we'll look at vehicles like the Prius the same way Prius owners look at SUV owners today.

    --
    my karma will be here long after I'm gone
  18. Re:Cold fusion by adolf · · Score: 2, Insightful

    Electric engines are roughly 3-4 times as efficient as gasoline ones. So you get 3-4 times the effective energy density out of batteries.

    Please explain what you mean. Your premise and conclusion are not related, which makes your statement completely nonsensical.

    More importantly you don't need that much energy, almost all car rides are short and electricity can be recharged at home unlike gasoline.

    And if that were the issue, we wouldn't even be discussing it. I can already get electric cars that are completely useful and practical for short trips around town, so that the car spends most of its time at home charging. The problem is that none of them are any good at all for leaving town, since there's no available means to recharge them easily, quickly, or without special arrangements.

    Less pollution wise than you'd get from gasoline, someone did look into it. Natural gas is a lot better, and used in quite a few places, but even coal beats out gasoline engines.

    Citation, please. Adding generation losses, transmission losses, DC conversion losses, battery storage losses, and drivetrain losses to compare it to the total efficiency of an internal combustion engine is a nontrivial thing. Just because some dude on Slashdot assures me that "someone did look into it" does not at all make me satisfied that reality is in any way supportive of the claim.

  19. Re:Cold fusion by Black+Gold+Alchemist · · Score: 2, Informative

    Here is a link (PDF warning: 154 pages) to the ANL study. Skip to page 133 of the PDF.

    If you really, really want to go crazy, then head on over to Argonne Nation Labs and check out this.

    Testing has shown that the Tesla roadster is around 250 watt*hours of electricity per mile. The Rav4 EV (which uses a less efficient drive train) is around 300 watt*hours per mile. You can plug this in to the EPA Power Profiler and get CO2 per mile for various areas. But all in all, the real advantage of an electric car is that electricity comes from renewables and nukes and gas does not yet do so.

    --
    Responsibility is an addiction
    Virtue is a temptation
    Community is a cartel
  20. Re:Cold fusion by dbIII · · Score: 4, Informative

    The correct answer is actually hydroelectric power from Hokkaido. There is some nuclear power available though, and with enough warning it can be ramped up to full capacity for quite a while to provide even more.
    It makes perfect sense in the 1970s and may do again - electricity available if there is a naval blockade by China. Expensive, high maintainance, awkward waste problems but ultimately it works in that situation. That's the sort of niche nuclear advocates should be arguing for and improving to turn it from the expensive alternative energy everyone hates into a commercial reality.

  21. Re:Cold fusion by NormalVisual · · Score: 4, Insightful

    a gas turbine is over 80% efficient

    I imagine they're also very efficient at annoying the neighbors with the noise. :-)

    --
    Please stand clear of the doors, por favor mantenganse alejado de las puertas
  22. Re:Cold fusion by daffy951 · · Score: 3, Insightful

    Sure, but who wants to buy a car that only gets 100 miles, then needs to be recharged every 50 miles?

    I do! My work is located ~15miles from my home and I could charge the car (for free!) all day while I'm working. A car which could go ~100 miles would cover almost all my personal transportation needs (not only to and from work), and if I would need to go longer I could rent or borrow another car (or take a bus / cab).

  23. Re:Cold fusion by Idiomatick · · Score: 2, Insightful

    That car might get 100mi on a charge but thats the market in Japan. If you are going further WTF wouldn't you take the train? It wouldn't make sense. The Tesla Model S gets 300mi to a charge; Thats Boston to Philadelphia in one go. Think about how often you make a trip that long... or half that long.

    A better way to put it, Would you be willing to take a 3~5minute break every 3hours of driving? To help the environment? I think that is a fairly minor lifestyle change at this point.

    Another point is that there is a world outside of the US. Newcastle to London is 300mi; Rome to Modena. In many places 300mi is horribly excessive. Hell, all of Ireland is 150mi across.

    Anyways I think the Volt is an amazing transition vehicle until infrastructure gets in place... eventually people will no longer feel the need to shell out x dollars for the turbine and it'll fade away.

  24. Microturbines and Hybrids by KonoWatakushi · · Score: 3, Interesting

    Indeed, hybrids are far more practical, but it seems that you are misrepresenting the promise of microturbines. From the wikipedia article:

    Typical microturbine efficiencies are 25 to 35%. When in a combined heat and power cogeneration system, efficiencies of greater than 80% are commonly achieved.

    In automotive applications, the waste heat goes unused; so the efficiency will be in the 25 to 35% range.

    Another promising option for hybrids is the OPOC engine, which is a simple, efficient, and clean 2-stroke engine. It is a very interesting design, with a number of other advantages as well.

    When coupled with a capacitor/flywheel/etc. to allow for regenerative braking and acceleration, the requirements for the power source in a hybrid are actually very minimal. This allows for the creation of an extremely efficient vehicle, and as far as energy density goes, you can't do much better than hydrocarbons.

  25. Re:Holy Carp... by TheLink · · Score: 2, Informative

    http://www.google.com/search?q=hydrocarbon+fuel+cell

    What's needed:
    1) Cheap enough source of energy (maybe newer nuclear or wind or thermal solar).
    2) Cheap source of CO2 (CO2 tends to occur in higher concentrations in water).
    3) Efficient way to get H2
    4) Cost effective hydrocarbon fuel cells that work efficiently, reliably, and can last a long enough time in the harsh environment of a car.
    5) Cost effective filters that can tolerate and filter out common undesirable impurities in the fuel, in order to protect the fuel cells.

    Is that harder than making a good enough battery (capacity + lifespan + cost)? Maybe. Maybe not.

    Lastly, jet planes aren't going to be running on batteries, and the world is not as nice without air travel, so it's probably a good idea to look for a good way of creating hydrocarbons anyway.

    Pure hydrogen jet planes might work, but retooling is going to be such a big pain, and storage space is a big problem on planes.

    So in a possible future the airplanes may burn "renewable" hydrocarbons, the long distance road vehicles may use fuel cells, or burn hydrocarbons, and short distance/commuter vehicles might use batteries.

    --
  26. Re:Cold fusion by bgarcia · · Score: 2, Interesting

    This might be a good second or third car, but it's not that practical as your main vehicle, and the fact that an electric vehicle must be charged nightly limits it to only being useful to homes with garages.

    Sure... currently. I wouldn't get this as my main vehicle. But an electric is perfect for my commuting vehicle. Especially if I can convince my employer to offer charging in our parking garage.

    Also, you need to think a little more long-term. If electrics start to become popular with the commuter crowd, then we'll see infrastructure developed to help support them. Cities will install charging stations in various parking spaces. I can imagine that one day we'll have major coast-to-coast highways with full-length induction charging available. Imagine being able to drive your electric car from New York to San Francisco, non-stop! You can't do that in a gas-fueled vehicle.

    --
    I'm a leaf on the wind. Watch how I soar.
  27. Re:Cold fusion by GaryOlson · · Score: 2, Insightful

    Your imagination hasn't had to drive long distances with women in the car. You have to stop at least once every 2 hours for them to go pee -- usually more frequently.

    --
    Every mans' island needs an ocean; choose your ocean carefully.
  28. Re:Cold fusion by tehcyder · · Score: 3, Insightful

    This is why SUVs have been so popular in the US despite their poor gas mileage. You can fit 5 to 7 adults comfortably and still have room for luggage.

    Whereas 90% of journeys have 1 adult and no luggage.

    --
    To have a right to do a thing is not at all the same as to be right in doing it
  29. Re:Cold fusion by s122604 · · Score: 2, Insightful

    That's wonderful bunch of anecdotes, but it doesn't really invalidate the case for the electric vehicle.

    There are more people in NYC metro area (NYC, northern new Jersey, eastern CT) then there are in Wyoming, Montana, North Dakota, South Dakota, and Idaho, and Alaska combined....

  30. Re:Cold fusion by fifedrum · · Score: 2


    Sure, but who wants to buy a car that only gets 100 miles, then needs to be recharged every 50 miles? This might be a good second or third car, but it's not that practical as your main vehicle, and the fact that an electric vehicle must be charged nightly limits it to only being useful to homes with garages.

    Me! I want one. I've never commuted more than 30 miles a day round-trip, and currently I commute 4 miles to work, my wife commutes 6 miles to work, and the vast majority of our trips in a commuter vehicle would be 30 miles. Even the big days would be 50 miles, taking the kids to events, driving myself to teach (I run a fife and drum corps) 1/2 way around our city, or driving to/from our datacenter to play hands/feet is only 32 miles round-trip.

    That said... to avoid owning a dedicated trip-to-grandma's-vehicle I actually want a Volt for the reasons you cite, once a month or less trips to distant locations. And I want an all electic motorcycle too just for kicks. But I want my Volt in diesel, and I want to be able to plug my house into it, instead of it into my house, when there's a power outage or we need electricity camping or something.

  31. Re:Cold fusion by cnaumann · · Score: 2, Insightful

    Electric cars will fail, and series hybrids like the Chevy Volt will succeed. When the batteries run low a gas generator keeps the batteries charged enough to power the vehicle. This is brilliant: I get my electric car for my short daily commutes, but I still have gas for those rare times when I need to drive hundreds of miles in a day. I have the best of both worlds with no sacrifices..

    And all those other times when you are not driving 100 miles in a day you are lugging around a heavy and useless generator. That you paid good money for. And when you are driving more than 100 miles a day, you are lugging around huge battery packs that are doing very little good (outside of some regenerative braking and acceleration boost which are negligible on the Interstate at a constant speed.) It sounds to me like the worst of both worlds. I think I would rather have a small all electric car to get me to work on a daily basis and a large gas SUV for longer trips (and it would be great if I could just rent the SUV when I needed it.)

    And no, you cannot get anywhere close to 80% efficiency with gas-in, electricty out turbines.

  32. Re:Cold fusion by Apple+Acolyte · · Score: 2, Insightful

    A substantial amount of the population drives less than 100 miles in a given multi-day period. I think an all electric car could be a primary vehicle for most purposes, while for longer trips a secondary gas or hybrid model would work.

    --
    Part of the hardcore faithful who believed in Apple long before it was cool again to do so
  33. Re:I'll wave when I drive past you ... by Flaming+Foobar · · Score: 2, Insightful

    And exactly what charges your batteries ?

    Hint : probably electricity from a coal-fired lower plant.

    That's a stupid argument because the solution is obvious: use wind, hydro, solar or nuclear energy to charge the vehicle.

    For gasoline engines, no clean solution exists at all.

    --
    while true;do echo -e -n "\033[s\n\033[u\134_\033[B";done
  34. Re:I'll wave when I drive past you ... by halltk1983 · · Score: 2, Insightful

    Many families already rent a vehicle when driving out of state. Rental of that second vehicle would be more cost effective and efficient than purchasing the second vehicle, if it's only used one or two weekends per month. As a bonus, you're always driving a new-ish car, of the latest model, and it can change based on the needs of that special event! SUV for a family road trip, sporty coupe for a weekend getaway with the missus, the possibilities are endless, and much better than driving a 13-mpg Suburban 24/7 just in case you have to immediately leave work to drive 1800 miles for a surprise vacation to Yellowstone where you'll have to offroad to get to your cabin.

    --
    Watch for Penguins, they eat Apples and throw rocks at Windows.