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Post by nemesis on Jan 14, 2020 17:10:48 GMT
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Post by nautonnier on Mar 7, 2020 10:02:32 GMT
"Indeed, a new study from the International Energy Agency shows that an electric car with a 400km range and charged with electricity produced at the global average will have to be driven 60,000km just to pay off its higher CO2 emissions in production. That means a new electric car driven the average 11,200km each year will have paid off its carbon debt only after five years. The IEA hopes the world can reach 130 million electric cars in 10 years — a breathtaking ask given we have spent decades reaching just over five million. Even if we could do that, emissions would be reduced by only 0.4 per cent of global emissions. In the words of IEA director Fatih Birol, “If you think you can save the climate with electric cars, you’re completely wrong.”"www.theaustralian.com.au/inquirer/extra-emissions-are-the-dirty-little-secret-of-electric-cars/news-story/4b11b81eb4ac66f0ea7dfec5a0e0cca1
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Post by nonentropic on Mar 7, 2020 19:04:25 GMT
They all use the average CO2 emissions of a unit of electricity but as any engineer who operates a grid knows its the last or marginal unit that counts, so in the world they have generated so as to speak its virtually always coal.
I am nearly sick of the heads I win tails you loose logic used to justify an "investment" in renewables'.
Call it what it is "social welfare for the rich" I always ask if they have noticed how poverty has been impacted since the rich take all the social welfare.
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Post by acidohm on Mar 14, 2020 21:27:08 GMT
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Post by missouriboy on Mar 14, 2020 23:29:40 GMT
Their building budget may have just taken a hit.
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Post by nautonnier on Apr 11, 2020 17:56:58 GMT
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Post by nautonnier on Jul 27, 2020 14:44:05 GMT
An engineer's view of the real problems with Electric Vehicles. "Mass EV Charging: Is A Can Of Worms Hiding Under The Bonnet?
The Government’s push to electrify road transport and domestic heating could place major cost burdens on consumers, says a new report
Electric vehicles have become something of a panacea for politicians as they grapple with how to decarbonise the transport sector. But for some engineers, the headlong rush to electrify road transport and domestic heating too is a major cause for concern. LTT reported in May the top-down analysis of Michael Kelly, the former chief scientific adviser to the Department for Communities and Local Government (LTT 29 May & Letters 26 Jun). Now a more bottom-up analysis has been prepared by retired engineer Mike Travers. Both reports have been published by the Global Warming Policy Foundation think tank.
“It is clear that the costs of supporting all the plans the Government has for transport and homes is going to be very high, and it is going to be made worse by the fact that the changeover is not being thought through, let alone planned effectively,” says Travers. “Part of the problem is that there is no institution or organisation in a suitable position to do so. The distribution companies own the transformers and cables, but may or may not be responsible for the smart meters. They therefore have little interest in some form of smart control [of electricity demand]. As profit-making companies, they also have no interest in investing for the future load increases, as they can charge for all the upgrading work as it is required.”
Decarbonisation will place huge new demands on the electricity network, with homeowners installing electric vehicle charging points, heat pumps and electric showers. “The extra demand for electricity will overwhelm most domestic fuses, thus requiring homeowners to install new ones, as well as circuit-breakers and new distribution boards,” says Travers. “Most will also have to rewire between their main fuse and the distribution network. In urban areas, where most electrical cabling is underground, this will involve paying for a trench to be dug between the home and the feeder circuits in the street.”"Much More Here:> www.thegwpf.com/mass-ev-charging-is-a-can-of-worms-hiding-under-the-bonnet/
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Post by youngjasper on Jul 28, 2020 0:49:52 GMT
Add to that: The energy density of batteries cannot (right now) come close to the energy density of hydrocarbons. My guess is that it will be quite a while before it becomes even close. Additionally, the issues with natural resources for batteries and disposal of the same are not anywhere close to what is needed to make electric vehicles widespread right now. I like electrics and there are definitely applications, but it has a long way to go to become what is dreamed of by many. How many of you would right now feel safe with batteries as primary or even hybrid power sources in aircraft given the fire hazard we've seen from simple cell phones even though those are very far and few between?
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Post by nautonnier on Jul 28, 2020 2:09:17 GMT
Add to that: The energy density of batteries cannot (right now) come close to the energy density of hydrocarbons. My guess is that it will be quite a while before it becomes even close. Additionally, the issues with natural resources for batteries and disposal of the same are not anywhere close to what is needed to make electric vehicles widespread right now. I like electrics and there are definitely applications, but it has a long way to go to become what is dreamed of by many. H ow many of you would right now feel safe with batteries as primary or even hybrid power sources in aircraft given the fire hazard we've seen from simple cell phones even though those are very far and few between? In aircraft it is the energy density at the moment that is the crippler. Prototype electric aircraft can fly with all sorts of issues and they can get a special regulatory waiver/derogation to allow their flight as an 'experimental' aircraft. But the regulators get quite a lot more strict when the aircraft are flying 'for hire or reward' with fare paying passengers, and the regulations are very specific. One in particular is the amount of 'endurance' required on reaching the destination to allow a failed approach and a diversion to somewhere else. The required endurance at destination currently exceeds the total endurance of electric aircraft. So the electric aircraft would be taking off with less endurance than they need at destination. I do not see battery technology advancing to provide a 100 - 200% increase in endurance. These aircraft will be toys for quite a long time.
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Post by youngjasper on Jul 28, 2020 2:53:09 GMT
Naut, you are correct. And there is no clear path through FAA certification for these aircraft - not to mention the batteries as part of that. And any delays in Part 23 FAA certification can be the death of a program because of the costs. There is a very long way to go on electric aircraft for carrying passengers regardless of how small.
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Post by nautonnier on Sept 4, 2020 19:12:44 GMT
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Post by nautonnier on Sept 19, 2020 20:21:43 GMT
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Post by nautonnier on Sept 24, 2020 11:43:04 GMT
"Tesla drivers get back into their cars after being locked out for more than an hour and massive network outage that hit Elon Musk's firm is resolved - amid fears it was caused by a HACK
Tesla was been hit by complete network outage starting around 11am ET Drivers were able to gain access to their cars after about an hour Internal systems were down, making it impossible for staff to process orders On the customer side, some users could not connect to their car in the app The US and Europe experienced issues with what appears to be the app The outage follows Tesla's Battery Day that many investors deemed a failure Elon Musk had promised an innovation to cut prices of electric cars However, the CEO said it may take another three years before that is possible Stocks in Tesla Inc fell more than 10 percent Wednesday"www.dailymail.co.uk/sciencetech/article-8764801/Tesla-hit-complete-network-outage-leaving-drivers-unable-connect-cars-using-mobile-app.htmlInteresting. So your independence depends on a cloud application that can be used to switch off your vehicle? No wonder the newly authoritarian governments are so keen to have everyone in an electric vehicle
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Post by gridley on Sept 24, 2020 12:57:35 GMT
"Tesla drivers get back into their cars after being locked out for more than an hour and massive network outage that hit Elon Musk's firm is resolved - amid fears it was caused by a HACK
Tesla was been hit by complete network outage starting around 11am ET Drivers were able to gain access to their cars after about an hour Internal systems were down, making it impossible for staff to process orders On the customer side, some users could not connect to their car in the app The US and Europe experienced issues with what appears to be the app The outage follows Tesla's Battery Day that many investors deemed a failure Elon Musk had promised an innovation to cut prices of electric cars However, the CEO said it may take another three years before that is possible Stocks in Tesla Inc fell more than 10 percent Wednesday"www.dailymail.co.uk/sciencetech/article-8764801/Tesla-hit-complete-network-outage-leaving-drivers-unable-connect-cars-using-mobile-app.htmlInteresting. So your independence depends on a cloud application that can be used to switch off your vehicle? No wonder the newly authoritarian governments are so keen to have everyone in an electric vehicle I actually got a demo of an acquaintance's Tesla and was somewhat impressed. I had considered putting Tesla in the running when it came time for my next car. However that, right there, is a deal breaker. If their engineers can't figure out and prevent THAT problem, what the heck else have they missed?
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Post by sigurdur on Sept 24, 2020 13:01:41 GMT
I looked at electric cars. We bought a Honda Passport. We can fill the tank with gas in 10 minutes.
Range for us is critical. We often have to drive 300+ miles in a day. In all types of weather conditions.
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