air wrote: » Easy calculate the flow rate with the nominal power (294MW), head (549m) & quoted one way efficiency (86.6%) In any case it appears to be huge (ballpark 63m3/s) and the temperature rise is less than I expected at < 1 degree C each way even at the 30% round trip efficiency based on a back of the envelope analysis.
Water John wrote: Pumped storage has an 80% efficiency. The pump becomes the generator, same as an EV.
McGiver wrote: » This is very unlikely. You have to use electricity to pump it against the gravity and then let it flow down and generate electricity via a standard hydro turbine, which is 90% efficient (generated by simple gravity action and kinetic energy of the falling water mass transformed into kinetic energy of the turbine which then is converted to an electromagnetic energy). Means you lose half of the energy it by durst investing energy in pumping the water against the gravity to a higher level. So 45% at best I'd say.
Water John wrote: » Large turbines turn 15/18 revs/min. So car charged in 15 sec of generation. Hydro has the big adv of a quick startup, about 12 sec. Great for unexpected drops. Battery would be much quicker.
MJohnston wrote: Why are you making guesses when it's a well researched technology?
MJohnston wrote: » WTF - finally got the FCP, was on it 2 and a half minutes, left to grab a coffee and someone in a Nissan has managed to stop my charge??
MJohnston wrote: » By known issue, do you mean it happens occasionally? I scanned mine to get the SCP to work and it didn’t disconnect this other car?
MJohnston wrote: » Also - how on earth can that be a known issue for more than a week? ESB need to hire a software developer to fix it asap
Mickeroo wrote: » It's been a known issue for the guts of a year I think, have heard plenty reports of chademo users knocking off CCS charging. They guy probably knew what he was doing tbh. What you mean SCP? I thought you were at an FCP?
MJohnston wrote: » I plugged in the CCS, went inside for a pitstop, checked the BMW app and saw "not charging", checked ESB and it said it had stopped charging after 2 minutes. So I went outside, Nissan driver was gone but hooked up to Chademo and charging. So then I unplugged, scanned to activate the AC charging, and plugged in. I suppose that's still Fast AC and a FCP.
Mickeroo wrote: » Sorry I get you now, Fast AC won't stop the CCS or Chademo because you can use it alongside no problem. Only one of CCS or Chademo can be used at any time though,but sometimes activating the chademo wheil the CCS is in use will stop the CCS.
MJohnston wrote: » So then I unplugged, scanned to activate the AC charging, and plugged in. I suppose that's still Fast AC and a FCP.
MJohnston wrote: I plugged in the CCS, went inside for a pitstop, checked the BMW app and saw "not charging", checked ESB and it said it had stopped charging after 2 minutes. So I went outside, Nissan driver was gone but hooked up to Chademo and charging. So then I unplugged, scanned to activate the AC charging, and plugged in. I suppose that's still Fast AC and a FCP.
air wrote: » That's a rather broad generalisation. The rotational speed is inversely proportional to the blade radius to maintain the approprite tip speed ratio and absolute tip speed within allowable limits. So the bigger the turbine the slower it turns in general.
McGiver wrote: » Hang on, so you were connected to the CCS and the other fella just plugged in Chademo while you were charging and that terminated your session?
innrain wrote: » Yes it happens. I think you have to plug the Chademo and then scan your card. At least every time it happened to me the chademo user first plugged in their car and then tried to see if their option is available. If I would get out to say that it does not work they would swear that last time they charged along with another CCS car. In my opinion it has nothing to do with the software more with ground sensing.
liamog wrote: » In fairness to them, it does appear to work. The CCS car is charging, they plug in and CHAdeMO starts working. Most are probably ignorant to the fact they've just knocked off someone elses charge.
charlieIRL wrote: » That wind is tough on range today. I was driving eastwards earlier and was getting 6kms/kWh but this evening coming home heading west....down to 3.9kms/kWh. Was driving same speed but 2 less people coming home. Got home with 14kms left!!!
MJohnston wrote: » The problems will happen when there are 2 users ignorant to this issue - one already charging on CCS and then they get knocked off and they accuse the Chademo user of doing it on purpose. I knew enough to know that the Nissan was likely the cause but not necessarily to blame, if that makes sense. Of course, if there had been two FCPs at Castlebellingham North, there would not have been this issue (and of course I was sat there on AC staring at 6 or 8 empty Superchargers!)
innrain wrote: » I would not even touch the FCP if I see a Chademo car charging. I would try to asses how long it will take them to finish. With the new webapp I can see when they've started and if that's close to 45 mins I might wait. Does the Chademo user doing it on purpose? I don't care. To blame them for being selfish is like to blame those driving on the bus lane.
MJohnston wrote: » Remarkable and saddening that this has been a bug for long enough that so many are aware of it though. Says a lot about ESB’s (lack of) commitment to a functioning charging network.
liamog wrote: » [ConspiracyTheory]Maybe the lead engineer drives a Leaf[/ConspiracyTheory]
kanuseeme wrote: » If your going to do a credible conspiracy theory, make it a team of engineers who live near all Rapid chargers and drive outlanders.
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