Where do you still encounter per-spot parking meters? Over here they have all been replaced by payment spots at one point in the parking lot or street, you have to walk up there and keyin your license plate number or the spot number where you are parked. When you are not using a smartphone-based payment system, that is. (just open the APP and keyin the advertised lot location code)
Bit old-fashioned, isn't it? Flashing traffic camera's haven't been seen here for years. They do with the existing lighting and if required they flash in infrared.
This article uses a very poor method of estimating the electrical energy needed, by equating kWh per gallon of gas to electrical power saying they "assume" EVs are four times more efficient thermally...
The easy way that doesn't require "assumptions" is to look at the miles driven. Most EVs get 4 to 5 mi/kWh, the rest is trivial. I did this once a while back, but here it is again.
"3.22 trillion miles on the nation's roads last year, up 2.8 percent from 3.1 trillion miles in 2015"
3.22 trillion miles divided by 4 mi/kWh = 805 TWh"In 2018, about 4,178 billion kilowatthours (kWh) (or 4.18 trillion kWh) of electricity were generated at utility-scale electricity generation facilities in the United States."
805 TWh / 4180 TWh = 19%The only "assumption" is the m/kWh of the EV, I used the number for a Tesla model 3 which is also not a bad number for the Nissan Leaf I believe. This value will improve as batteries and motors and electronics improve.
Even Slate was a pessimist. But then those are US figures??? Maybe in the third world where Phil lives it's a different issue. It has been made clear that in the UK they have trouble putting a kettle on.
-- Rick C. -+++ Get 2,000 miles of free Supercharging -+++ Tesla referral code - https://ts.la/richard11209
he next several years according to their own study.
ousands of parts while electrics are hundreds. While material issues need to be solved for EVs to be produced in such quantities, what to do about su rplus workers?
e words when he
cut
Ford is cutting the less profitable cars from their lineup because they wan t to allow for lower profits during the transition to EVs. They aren't exp ecting to be instantly profitable like Tesla has been... opps, I guess they haven't. So Ford is learning from Tesla's mistakes.
Sounds smart to me.
When you say GM is full of it, do you really think people are going to keep buying ICE even when EVs have achieved price parity? Remember, EVs requir e a LOT less maintenance and fuel costs are significantly lower. At some p oint people will be buying $15,000 EVs with 150 mile range because that sui ts them best for their driving and the costs are lower. That may be 10 or
20 years out, but do you really think it is unreachable?-- Rick C. +--- Get 2,000 miles of free Supercharging +--- Tesla referral code - https://ts.la/richard11209
ired to produce the energy used.
labor and... energy.
tom. You know, "It's turtles all the way down!"
he first level of analysis. I would be willing to bet that at the secondar y levels below that the labor/materials/facilities/technology is pretty muc h the same as building any other large equipment/appliance in use today.
y higher.
uipped.
doing a full analysis it can be reasonably expected that much higher cost equals more total labour.
go over that since it has already been beaten to death here.
lysis is faulty and produces a result that is not even a good first order a pproximation. Well, it's probably right to within an order of magnitude...
your table, from which no sense could be made. If you re-present it in its proper format it might be possible to at least see what it means.
I'm referring to the original post. Did you read anything in the link prov ided?
-- Rick C. +--+ Get 2,000 miles of free Supercharging +--+ Tesla referral code - https://ts.la/richard11209
That effect is not at all relevant to the discussion. My brother is taller than my sister. What does that have to do with my sister beating my cousin at basketball because she is taller?
-- Rick C. +-+- Get 2,000 miles of free Supercharging +-+- Tesla referral code - https://ts.la/richard11209
go EV in terms of CO2 reduction.
ly don't have to, and the Australian utilities are investing heavily in win d and solar power, and spending nothing on installing new fossil-carbon fir ed generating plant, much to the government's disgust, who want them to pan der to the mining interests that pay the Liberal Party's electoral expenses .
This article has numerous flaws. The references are out of date and can no t be traced. They talk about charging from "the existing mix of non-base-l oad sources (as nighttime charging likely would)", but wouldn't night time charging be base load?
-- Rick C. ++-- Get 2,000 miles of free Supercharging ++-- Tesla referral code - https://ts.la/richard11209
to go EV in terms of CO2 reduction.
inly don't have to, and the Australian utilities are investing heavily in w ind and solar power, and spending nothing on installing new fossil-carbon f ired generating plant, much to the government's disgust, who want them to p ander to the mining interests that pay the Liberal Party's electoral expens es.
not be traced. They talk about charging from "the existing mix of non-base
-load sources (as nighttime charging likely would)", but wouldn't night tim e charging be base load?
The references are explicit, and a google search should be able to find the current equivalents.
The talk about "charging from the existing mix of ... sources" reflects pur e intellectual laziness. If the move away from gasoline-powered cars is par t of a general move away from burning fossil carbon to generate power, the electricity generating system will move away in the same way, as indeed it is doing.
-- Bill Sloman, Sydney
Absurd of you to call it merely a "car". Many Prius and other hybrids here in Sydney, but no plug-in versions to be seen.
** Nothing.You are clearly a solar /EV raving lunatic.
..... Phil
I think it may actually a high intensity array of white LEDs, not a strobe. People put all sorts of weird crap on the license plates to try to defeat 'em like IR LEDs or blinking LEDs pointing backwards, and darkly tinted plate covers, reflective tape, stuff like that. High intensity visible light flash will defeat any of that low-effort ideas I believe.
The units in Providence, RI don't just take photos they record about ten seconds of video too, day or night. they play that back for the whole court to see if you go to court to contest your citation. There's usually plenty of ambient light in the areas they're installed to get a plate from the video too, it's just that the flash and still camera produce higher-quality image they include with your citation in the mail. They include the close up of photo the plate and a frame from the video showing the whole vehicle, with time index on it. that process from snapping a photo to the citation being printed and mailed can be almost entirely automated.
If for some reason the still camera and flash can't resolve a clear image due to some high-quality obscuring system that's triggered by the flash like maybe this one:
or can't resolve it for some other reason then it likely gets kicked up to real human who'll take a closer look and try to get something from the video. usually though the only legal requirement is a police officer just has to flip through the images in the file at the end of the day if each image has all digits clearly visible it all the citation letters can automatically be stamped "citation reviewed by a police officer."
All the rest of the logistics is handled by a third-party contractor I'm pretty sure.
:
e to go EV in terms of CO2 reduction.
tainly don't have to, and the Australian utilities are investing heavily in wind and solar power, and spending nothing on installing new fossil-carbon fired generating plant, much to the government's disgust, who want them to pander to the mining interests that pay the Liberal Party's electoral expe nses.
n not be traced. They talk about charging from "the existing mix of non-ba se-load sources (as nighttime charging likely would)", but wouldn't night t ime charging be base load?
he current equivalents.
"Explicit"! Oooohhh, that sounds important. Unfortunately a google search didn't turn up anything useful. The point was to see what the claim was b ased on, not to start a trip down another rabbit hole.
ure intellectual laziness. If the move away from gasoline-powered cars is p art of a general move away from burning fossil carbon to generate power, th e electricity generating system will move away in the same way, as indeed i t is doing.
Sounds great, but it is more useful to actually have said something substan tial than to generally wave hands and proclaim we are headed toward goodnes s. I don't understand what the guy is talking about when he says, "non-bas e-load sources" since that would be the primary source of power for night t ime charging, in fact it is what is required to use if the proportion of no n-load following generation is to be used. While nuclear can be built to b e load following, it has very limited capabilities in that regard, in both the rate and the degree of capacity adjustment. It's really not a good res ource to squander given the expense of both the fuel and the facilities. L oad following in nuclear reactors does waste fuel and increases the cost of depreciation which is essentially fixed with time and so increases per uni t of generation when generation is cut back.
-- Rick C. +++- Get 2,000 miles of free Supercharging +++- Tesla referral code - https://ts.la/richard11209
LOL The guy answers Phil's question and goes on to describe his experience with the car and Phil is incapable of acknowledging that other than by insulting him.
There are many, many loons in this group, but Phil often takes the cake.
-- Rick C. ++++ Get 2,000 miles of free Supercharging ++++ Tesla referral code - https://ts.la/richard11209
Win doesn't rave, unlike certain posters that we know.
He's probably not a lunatic either.
-- Bill sloman, Sydney
While there have been solar races across Australia, the super light vehicles (tricycles ?) are completely covered with solar cells, the driver is laying on his stomach to reduce frontal area and hence reduce air resistance, those are completely impractical for everyday use.
Those 40 % efficiency claims are from laboratory samples using multilayer and multispectral panels. One solar cell material uses red/near infrared, an other converts yellow/green and/or a third layer uses a material working well for blue/greeen. Such panels would be expensive. I even doubt that such panels are used even on satellites.
150 W with the sun in zenith. During noon, the output drops due to latitude and season, when the sun is in unfavorable angle.The 10 hour charging period is unrealistic, that would be +/-5 hours or +/-75 degrees from noon. Due to trigonometry only, the output be 38 W at extremes. Antireflective coating would reduce output even further at extreme angles.
While parked, actuators could be used to lift one or two edges of the panel to aim it towards the sun, but at 75 degree offset, the air mass (AM) losses would reduce output significantly, so 10 hour charging is not realistic.
While tilting the panels while driving would increase electricity captured, the added drag due to tilted panels would kill any energy gains.
collect 1 kWh during a day, which translates to much less than 10 km/day for a regular EV.
------------------------------
** Very game of you to inject a bit of reality into a discussion of PVs and EVs with the resident free energy lunatics.Likely to get you tarred and feathered, you know.
EVs are like sacred cows to Hindus.
.... Phil
The Prius Prime plugin is IMHO a VERY well thought out fuel/electric-car. It's at the top of my list, if I wanted to buy a passenger car.
-- Daniel Mandic
nd EVs with the resident free energy lunatics.
The solar car race across Australia is real. Putting solar panels on the ca r is an impractical idea, if not entirely impracticable.
Put a battery in the car, and charge it from a solar farm for the 95% of th e day when it is parked, and the whole idea is perfectly practical, as Win has demonstrated - his Prius seems to be of the sort than can have it's bat tery charged while it is parked, rather than rely on the little petrol engi ne alone to charge it up. He's bought very little gasoline for the car sinc e he got it.
-- Bill Sloman, Sydney
What exactly does that 4443 TWh include ? Does it contain only that amount of gasoline burnt in cars and not in lawn movers or used as solvent etc. Is the figure only gasoline and not diesel fuel used in cars, trucks and buses ?
The 25 % thermodynamic efficiency assumed for a gasoline car might be a bit optimistic, so the 1111 TWh might be on the high side.
The other estimation used in this thread is based on the total milage in the US. This resulted an guesstimate below 900 TWh. Does that milage driven include only gasoline driven cars or also diesel cars ? Does it contain also milage for trucks and buses ?
Anyway, the two guestimates are within 10-20 % from each other, which is sufficient for an order of magnitude comparison.
On Sunday, October 6, 2019 at 7:01:46 PM UTC+11, snipped-for-privacy@downunder.com wro te:
articular step in the chain of logic as false.
TWh of energy used to drive the car wheels around is a bit crude, but the p otential error is a few perecent, not the order of magnitude that would be required to make you estimate plausible.
Look for yourself.
Diesel fuel was excluded. Apparently it's not much used in cars in the US.
That's comforting. I've managed to miss the other estimate, wherever it is.
It's bed-time here, so I'll have look for it tomorrow.
-- Bill Sloman, Sydney
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