Home |
Search |
Today's Posts |
|
UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
Reply |
|
LinkBack | Thread Tools | Display Modes |
#41
Posted to uk.d-i-y
|
|||
|
|||
Christmas lecture
In article ,
tim... wrote: "mechanic" wrote in message ... On Wed, 28 Dec 2016 11:39:32 -0000, tim... wrote: It depends. If 'they' tax the f**k out of diesels etc or ban them totally in towns, they might be the only option for commuter journeys. Yeah right. Ban petrol cars whilst the alternatives all cost over 40 grand He was talking about diesel powered cars. he said "diesels etc" I interpreted that as "diesels and petrol" otherwise the response is "everyone will drive petrol cars then". on a scale of 1 to 10, where diesel is 10, and electric 0, petrol is a 9. As regards the sort of pollution we suffer in towns? Not so. Modern petrol cars are very clean indeed. As regards CO2, they obviously still produce that. But then so do most of the electrical generation plants in the UK. there would be no point at all banning diesels as route to making everyone take up electric cars There would be in towns. I'm a bit surprised that the govt hasn't announced an intention to do this some time in the future. They are a menace. all those taxis and lorries would have to go IIRC, new London Taxis will have to be hybrids shortly. Some buses already are - but with diesel engines. -- *Rehab is for quitters. Dave Plowman London SW To e-mail, change noise into sound. |
#42
Posted to uk.d-i-y
|
|||
|
|||
Christmas lecture
In article ,
Chris Hogg wrote: Much of what Turnip says is. Or more accurately, delusion. He wasn't suggesting that people have nuclear powered cars, but he was pointing out that only atomic fuel has the energy density necessary to give cars the ranges to match those of today's ICE cars, Eh? You are going to have to re-fuel nuclear powered cars as often? If the object is just to reduce harmful emissions, hydrogen power can do that already, with adequate range and reasonably fast refuelling. At a cost. That is existing technology - not something Turnip read in The Eagle. with the implication that battery powered cars with those ranges would never happen, for obvious reasons. Never say never. -- *Whatever kind of look you were going for, you missed. Dave Plowman London SW To e-mail, change noise into sound. |
#43
Posted to uk.d-i-y
|
|||
|
|||
Christmas lecture
In article ,
Chris Hogg wrote: And of course you'd have to at least double the generating capacity of the National Grid and its distribution system. Bearing in mind that renewables don't contribute more than about 15 - 20% of our electricity supply ATM, without much prospect of that being significantly increased, battery powered vehicles aren't going to happen because there won't be the electricity to power them, regardless of the availability of the batteries. Which do you think will come first? A new generation of nuclear power stations in the UK - or nuclear powered cars? -- *A dog's not just for Christmas, it's alright on a Friday night too* Dave Plowman London SW To e-mail, change noise into sound. |
#44
Posted to uk.d-i-y
|
|||
|
|||
Christmas lecture
In article ,
wrote: On Wednesday, 28 December 2016 01:00:35 UTC, Dave Plowman (News) wrote: It depends. If 'they' tax the f**k out of diesels etc or ban them totally in towns, they might be the only option for commuter journeys. Plenty of fast charging points would help too For commuters *fast* charging is less essential - cars can be slow charged if there are enough points, which could approach 100% of parking spaces needing to be electrified. Yes. Although for perhaps most, charging overnight at home would give enough range for the next day's use. That would be needed anyway as most commuters won't pop out of the office at 11 am to move their fast-charged car out of a charging bay so someone else can put their car in it for a couple of hours. The government don't seem to have decided whether they want to reduce fossil fuel use in total, or reduce emissions in city centres. I don't think the two necessarily go together. The government doesn't know their arse from their elbow when it comes down to emissions. Everyone with any knowledge of the subject knew diesels produced more harmful emissions, then as now. It's only CO2 they produce less of. -- *A cubicle is just a padded cell without a door. Dave Plowman London SW To e-mail, change noise into sound. |
#45
Posted to uk.d-i-y
|
|||
|
|||
Christmas lecture
On 28/12/16 18:50, Chris Hogg wrote:
On Wed, 28 Dec 2016 16:13:45 +0000 (GMT), "Dave Plowman (News)" wrote: In article , Chris Hogg wrote: And of course you'd have to at least double the generating capacity of the National Grid and its distribution system. Bearing in mind that renewables don't contribute more than about 15 - 20% of our electricity supply ATM, without much prospect of that being significantly increased, battery powered vehicles aren't going to happen because there won't be the electricity to power them, regardless of the availability of the batteries. Which do you think will come first? A new generation of nuclear power stations in the UK - or nuclear powered cars? Nuclear power stations, obviously, but that assumes TPTB and the general public would be prepared to go all nuclear, and that there'd be double the capacity in both generation and transmission, neither of which will happen any time soon. treble. If you take climate change/renewable ******** out of the equation, and rationalise nuclear regulation, you are looking at a ~50 year process of building nuclear and building enough grid infrastructure to replace increasingly expensive fossil with cheap nuclear electrical power wherever possible. In the end the market will drive the process, if its allowed to. |
#46
Posted to uk.d-i-y
|
|||
|
|||
Christmas lecture
tim... wrote:
"Simon Mason" wrote in message ... On Tuesday, 27 December 2016 13:29:37 UTC, tim... wrote: Billed as "energy for the future" I was expecting an exposé of all of the new technology that is coming on stream in the next 20 years But with one minor exception, it was nothing more than a 50 year old physics lecture No fusion on the horizon yet then? Of course breakthrough within the next 10 years. but weren't they saying that 50 years ago? (OK I'll admit, in that respect, perhaps my 50 years was a small exaggeration) tim 'They' were certainly saying that more than fifty years ago to my personal knowledge. And resorting to Wikipedia shows that the Manhattan project had it on the agenda, though probably they had momentary fusion in mind, and this was weaponised not long after. -- Roger Hayter |
#47
Posted to uk.d-i-y
|
|||
|
|||
Christmas lecture
On Tue, 27 Dec 2016 14:04:09 +0000, tim... wrote:
"Chris Hogg" wrote in message ... On Tue, 27 Dec 2016 13:29:06 -0000, "tim..." wrote: Billed as "energy for the future" I was expecting an exposé of all of the new technology that is coming on stream in the next 20 years But with one minor exception, it was nothing more than a 50 year old physics lecture Disappointed doesn't cover it. Patience. They have to start somewhere. It may develop and improve. today's is about how animals create/store/use energy so I am not hopeful Me neither. As scientific lectures go, it falls disgracefully short of the level I'd have expected of even the more recent dumbed down Horizon programmes (and, with very few exceptions, they've generally been truly disgraceful). The "AA "battery"" analogy is rather puerile imo lacking, as it does, any reference to a scientific energy equivalent such as the number of joules (or even watt hours) equivalency of 'the typical (presumably alkaline) AA cell'. After that, it all went rapidly downhill from then on. I've never been impressed by any of these Xmas lectures in recent years due to the remarkable absence of 'scientific rigour' and this year's lecture series seems destined to set the bar to its lowest level ever. :-( I'm surprised there aren't any YouTube versions where the missing data points have been added to rectify the absence of scientific content which would at least double, if not triple, the running time of each lecture session. I guess the BBC just root out out the less reputable "scientists" to bribe them into trading whatever scientific integrity they may still have possessed for a big fat bribe in exchange for whoring themselves in this way. Scientifically speaking, this Xmas lecture series has been the most 'content free' series I've ever seen to date. The only reason I'm recording this series at all has now been reduced to that of "evidence gathering" in the event that a criminal case of "Crimes against Scientific knowledge and learning" is ever brought against the UK's Public Service Broadcaster. -- Johnny B Good |
#48
Posted to uk.d-i-y
|
|||
|
|||
Christmas lecture
On Tue, 27 Dec 2016 13:29:06 +0000, tim... wrote:
Billed as "energy for the future" I was expecting an exposé of all of the new technology that is coming on stream in the next 20 years But with one minor exception, it was nothing more than a 50 year old physics lecture Disappointed doesn't cover it. Did nobody spot these 'lectures' are aimed at children? Just saying. -- TOJ. |
#49
Posted to uk.d-i-y
|
|||
|
|||
Christmas lecture
On 27/12/2016 16:42, tim... wrote:
"The Natural Philosopher" wrote in message news On 27/12/16 17:12, tim... wrote: For example, there are supposed to be some new battery technologies that are a couple of orders of magnitude better than currently available. I can assure you there are not.... I know, you have told me before but you are just a random person on the internet so why should I attribute more weight to you than to all the other "random" persons on the internet who disagree with you. Some of whom are actually academic physicists (even if I have never heard of them) and some people with a very real interest in it actually being right. I have no personal opinion on who is right, but you really do not have the visibility for me to believe that it is you. Especially when, without these two orders of magnitude improvement, electric cars for the masses, that automotive companies are investing billion in, are never going to happen. Tim, I'll be amazed if you can find any scientist who thinks you can get two orders of magnitude more storage in a chemical battery. The limits are down the the reaction energy of the elements involved, and these are well known. More power for a shorter time, or more battery life (recharge more times) is quite feasible, but not more capacity. Andy |
#50
Posted to uk.d-i-y
|
|||
|
|||
Christmas lecture
"tim..." wrote in message news "Huge" wrote in message ... On 2016-12-27, tim... wrote: Billed as "energy for the future" I was expecting an exposé of all of the new technology that is coming on stream in the next 20 years What "new technology"? I dunno, it's not my professional field so I was hoping to learn about new stuff. For example, there are supposed to be some new battery technologies that are a couple of orders of magnitude better than currently available. But rather than read up on them in "The New Scientist" or similar, or check them out for yourself in Wikipaedia, you held back hoping that there'd be a TV programme about them over Christmas ? I see. TV nowadays is primarily for entertainment; they even scrapped OU broadcasts years ago. Either pure entertainment or presenting information in an entertaining way largely for an audience who otherwise wouldn't go out of their way to research this material for themselves. What it isn't designed for is people who are already familiar with a topic and who expect, for some unaccountable reason to actually learn something new. Or maybe they just like to show off ? |
#51
Posted to uk.d-i-y
|
|||
|
|||
Christmas lecture
On 12/28/2016 6:10 PM, Johnny B Good wrote:
On Tue, 27 Dec 2016 14:04:09 +0000, tim... wrote: "Chris Hogg" wrote in message ... On Tue, 27 Dec 2016 13:29:06 -0000, "tim..." wrote: Billed as "energy for the future" I was expecting an exposé of all of the new technology that is coming on stream in the next 20 years But with one minor exception, it was nothing more than a 50 year old physics lecture Disappointed doesn't cover it. Patience. They have to start somewhere. It may develop and improve. today's is about how animals create/store/use energy so I am not hopeful Me neither. As scientific lectures go, it falls disgracefully short of the level I'd have expected of even the more recent dumbed down Horizon programmes (and, with very few exceptions, they've generally been truly disgraceful). The "AA "battery"" analogy is rather puerile imo lacking, as it does, any reference to a scientific energy equivalent such as the number of joules (or even watt hours) equivalency of 'the typical (presumably alkaline) AA cell'. After that, it all went rapidly downhill from then on. I've never been impressed by any of these Xmas lectures in recent years due to the remarkable absence of 'scientific rigour' and this year's lecture series seems destined to set the bar to its lowest level ever. :-( +1. I have been disappointed with these for many years, and a bit surprised given the (once) great reputation of the Royal Institution for public lectures. The Reith Lectures, on the other hand, I generally find to be excellent. And the BBC don't do a bad job with the questions. |
#52
Posted to uk.d-i-y
|
|||
|
|||
Christmas lecture
I did but from what I know about most of tthe children of the age they
usually get, they need to be far more advanced to hold their attention. You could tell most of the time they were bored and the only bits they were interested in were the bits where he blew stuff up. Very little new came to light even in the last one though thankfully somebody must have told hiim about his use of k instead of g on the end of words. I'd have liked to have had more details about the reason why mobile phones gps used so much power, I mean he explained about transmitting and the screen needed a light etc, but why would a receiver need tso much power? OK he did labour power density rather a lot but to me, even the me back in the 60s this was the bleedin obvious. It was a problem back then and is still one now. Also obviously the more power dense a substance is the harder it is to store and control. Yes we did the hydrogen experiments back in the 60s too one day they said this will be the only fuel, well here we are and just like Nuclear Fusion we still are waiting. I think though the lectures were no doubt done in good faith, they were a bit of a disappointment, proobably due to the fact an awful lot of modern development is now commercially sensitive and hence not public knowledge. Brian -- ----- - This newsgroup posting comes to you directly from... The Sofa of Brian Gaff... Blind user, so no pictures please! "The Other John" wrote in message news On Tue, 27 Dec 2016 13:29:06 +0000, tim... wrote: Billed as "energy for the future" I was expecting an exposé of all of the new technology that is coming on stream in the next 20 years But with one minor exception, it was nothing more than a 50 year old physics lecture Disappointed doesn't cover it. Did nobody spot these 'lectures' are aimed at children? Just saying. -- TOJ. |
#53
Posted to uk.d-i-y
|
|||
|
|||
Christmas lecture
"charles" wrote in message ... In article , mechanic wrote: On Wed, 28 Dec 2016 11:39:32 -0000, tim... wrote: It depends. If 'they' tax the f**k out of diesels etc or ban them totally in towns, they might be the only option for commuter journeys. Yeah right. Ban petrol cars whilst the alternatives all cost over 40 grand He was talking about diesel powered cars. I'm a bit surprised that the govt hasn't announced an intention to do this some time in the future. They are a menace. Then the Government will have to compensate the owners of diesel engined cars. We bought them because the Government recommeded them as creating less polution than petrol ones and reduced road tax to prove it. Most people who are suggesting banning diesels have suggested a date of 2025 for implementation. ISTM that 9 year's notice is sufficient for people who already own one, people who buy going forward from today, are already "on notice". The big problem with banning diesels is in lorry/van usage. This market uses diesels because of the greater longevity of the engines and forcing commercial operators to use vehicles that need scrapping sooner will push up costs tim -- from KT24 in Surrey, England |
#54
Posted to uk.d-i-y
|
|||
|
|||
Christmas lecture
"Johnny B Good" wrote in message ... On Tue, 27 Dec 2016 14:04:09 +0000, tim... wrote: "Chris Hogg" wrote in message ... On Tue, 27 Dec 2016 13:29:06 -0000, "tim..." wrote: Billed as "energy for the future" I was expecting an exposé of all of the new technology that is coming on stream in the next 20 years But with one minor exception, it was nothing more than a 50 year old physics lecture Disappointed doesn't cover it. Patience. They have to start somewhere. It may develop and improve. today's is about how animals create/store/use energy so I am not hopeful Me neither. As scientific lectures go, it falls disgracefully short of the level I'd have expected of even the more recent dumbed down Horizon programmes (and, with very few exceptions, they've generally been truly disgraceful). The "AA "battery"" analogy is rather puerile imo lacking, as it does, any reference to a scientific energy equivalent such as the number of joules (or even watt hours) equivalency of 'the typical (presumably alkaline) AA cell'. After that, it all went rapidly downhill from then on. I've never been impressed by any of these Xmas lectures in recent years due to the remarkable absence of 'scientific rigour' and this year's lecture series seems destined to set the bar to its lowest level ever. :-( I'm surprised there aren't any YouTube versions where the missing data points have been added to rectify the absence of scientific content which would at least double, if not triple, the running time of each lecture session. I guess the BBC just root out out the less reputable "scientists" to bribe them into trading whatever scientific integrity they may still have possessed for a big fat bribe in exchange for whoring themselves in this way. One assumes that the RI have input into these decisions as they have a direct interest in the quality of the output Which as you say has been poor this year. Reviews in another place are uniformly poor. Though back to my original point, he did, in the third lecture, tell us about future ideas that are being worked on - a three fold improvement in Lithium technology probably 10 years away. Not enough, not quick enough, to meet (worldwide) government aspirations to have 100% electric car sales by 2025. I hope that I am still alive to see them back track on this. It is wholly predictable. tim |
#55
Posted to uk.d-i-y
|
|||
|
|||
Christmas lecture
"Dave Plowman (News)" wrote in message ... In article , tim... wrote: "Dave Plowman (News)" wrote in message ... In article , tim... wrote: Actually you are wrong, we have batteries that are just about good enough for short range cars. a single order of magnitude might be enough to fly a commercial electric airliner to the USA. Short range cars are no good as "main" cars It depends. If 'they' tax the f**k out of diesels etc or ban them totally in towns, they might be the only option for commuter journeys. Yeah right. Ban petrol cars whilst the alternatives all cost over 40 grand The Nissan Leaf costs from about 17 grand. After government subsidy and some other discount that I can't make sense of (there's mention of battery rental, but no costs stated) basic full OTR price is 26,000 and that's with the battery pack that's only good for 80 miles (in real use), 30 grand for 120 miles. My estimate of 40 grand was for a car that was capable of at least 150 miles, *in real use*, (and I don't consider even that sufficient for mass take up) Let the rich drive into town whilst the poor have to walk - gonna be a real vote winner that, isn't it? It's already what happens in a capitalist society. I take it you hate that? why wouldn't you unless you are one of the rich! Plenty of fast charging points would help too - as would some form of easily changeable power pack common to all. And it's more likely you could make a small battery vehicle with a decent range than a large one at a more economic price. the cost of the battery is much the same No it's not. Depends on the capacity. The cost of a battery to achieve 300 miles is the same whatever car you put it in (the extra weight of a slightly larger car is insignificant in this calculation) claiming that as it's a "city" car it only needs a range of 100 miles isn't valid as everybody needs to do the 300 mile trip once in a while and a car that can't do that for you is useless as your main car. To be mass market all cars have to have a battery capable of 300 miles (in real use) (though I suppose there is a possibly of renting secondary batteries for a single trip, but that will impinge on the luggage load) To get 100% acceptance (which TPTB seem to think is necessary) they need range and cost no more than current cars The costs of various types of car - and fuel - is under government control. only if you subsidise the capital costs Or put up the costs of running a petrol/diesel car. the problem here is that liquid fuel is used for other things why should those other uses have to pay more to meet this electric car "dream" something which might work to start off sales but can't be afforded if 100% of sales are of electric cars If they become the norm, the prices will fall. the costs are all in the battery there is no sight of the costs falling There is a second mass market for batteries where size/weight doesn't matter and only cost is an issue. That of home (or network) storage. And even with that opportunity, costs aren't falling. Two orders of magnitude ain't gonna happen with batteries. The ONLY thing with the sort of energy density is atomic fuel. well that's not going to happen for domestic transport, is it? Turnip knows no more about what might happen in the future than anyone else. And his guesses less well informed than many. The idea that TPTB are going to let vessels with nuclear fuel in them run around on normal roads driven by uncle Tom Cobley and all is fantasy Much of what Turnip says is. Or more accurately, delusion. Physics tells us that. That's why I can say 'aint gonna happen' So why aren't these same Physicists explaining all that to the Automotive industry? It's awash with money. It's not like the can't afford to ask The motor industry ain't going to spend unlimited amounts on blind alley research. well they ARE spending the money They do spend money on, yes. But more accurately on development. I'm not sure what you are saying to be clear, they are spending pots of money (billions) on *development* of electric cars tim |
#56
Posted to uk.d-i-y
|
|||
|
|||
Christmas lecture
"Vir Campestris" wrote in message o.uk... On 27/12/2016 16:42, tim... wrote: "The Natural Philosopher" wrote in message news On 27/12/16 17:12, tim... wrote: For example, there are supposed to be some new battery technologies that are a couple of orders of magnitude better than currently available. I can assure you there are not.... I know, you have told me before but you are just a random person on the internet so why should I attribute more weight to you than to all the other "random" persons on the internet who disagree with you. Some of whom are actually academic physicists (even if I have never heard of them) and some people with a very real interest in it actually being right. I have no personal opinion on who is right, but you really do not have the visibility for me to believe that it is you. Especially when, without these two orders of magnitude improvement, electric cars for the masses, that automotive companies are investing billion in, are never going to happen. Tim, I'll be amazed if you can find any scientist who thinks you can get two orders of magnitude more storage in a chemical battery. The limits are down the the reaction energy of the elements involved, and these are well known. So why aren't these scientists explaining to politicians that their aspiration of 100% electric cars/vans/lorries is unachievable. To get mass take up of electric cars you have to have a range of 350 miles (in real use), a residual value after 5 years (so the initial battery needs to be useful for 10) with base models (still with that 350 range) selling for under 15 grand (today's money). At the moment we have electric cars that don't have the range for main family cars and that are too expensive for second cars. If we are never going to break out of that circle the sales for electric cars are never going to exceed 10%. And yet, worldwide, politicians ARE expectation to cast the IC engine to history by 2025. And I won't even start on how they expect people to charge up at home with planning rules that allow developers to build hundreds of houses on an estate with only communal parking. tim |
#57
Posted to uk.d-i-y
|
|||
|
|||
Christmas lecture
"Moron Watch" wrote in message news "tim..." wrote in message news "Huge" wrote in message ... On 2016-12-27, tim... wrote: Billed as "energy for the future" I was expecting an exposé of all of the new technology that is coming on stream in the next 20 years What "new technology"? I dunno, it's not my professional field so I was hoping to learn about new stuff. For example, there are supposed to be some new battery technologies that are a couple of orders of magnitude better than currently available. But rather than read up on them in "The New Scientist" or similar, You can't expect someone to subscribe to a general magazine on the off chance that a specific article will appear or check them out for yourself in Wikipaedia, AKA Wonkypedia you held back hoping that there'd be a TV programme about them over Christmas ? I see. Of course not. It just happened along. I wasn't waiting for it. tim |
#58
Posted to uk.d-i-y
|
|||
|
|||
Christmas lecture
In article , tim...
wrote: "charles" wrote in message ... In article , mechanic wrote: On Wed, 28 Dec 2016 11:39:32 -0000, tim... wrote: It depends. If 'they' tax the f**k out of diesels etc or ban them totally in towns, they might be the only option for commuter journeys. Yeah right. Ban petrol cars whilst the alternatives all cost over 40 grand He was talking about diesel powered cars. I'm a bit surprised that the govt hasn't announced an intention to do this some time in the future. They are a menace. Then the Government will have to compensate the owners of diesel engined cars. We bought them because the Government recommeded them as creating less polution than petrol ones and reduced road tax to prove it. Most people who are suggesting banning diesels have suggested a date of 2025 for implementation. ISTM that 9 year's notice is sufficient for people who already own one, people who buy going forward from today, are already "on notice". The big problem with banning diesels is in lorry/van usage. This market uses diesels because of the greater longevity of the engines and forcing commercial operators to use vehicles that need scrapping sooner will push up costs Quite a few rail locos still use diesel, too. The cost of electrifying all the railways lines is going to be horrendous. -- from KT24 in Surrey, England -- from KT24 in Surrey, England |
#59
Posted to uk.d-i-y
|
|||
|
|||
Christmas lecture
In article , tim...
wrote: "Vir Campestris" wrote in message o.uk... On 27/12/2016 16:42, tim... wrote: "The Natural Philosopher" wrote in message news On 27/12/16 17:12, tim... wrote: For example, there are supposed to be some new battery technologies that are a couple of orders of magnitude better than currently available. I can assure you there are not.... I know, you have told me before but you are just a random person on the internet so why should I attribute more weight to you than to all the other "random" persons on the internet who disagree with you. Some of whom are actually academic physicists (even if I have never heard of them) and some people with a very real interest in it actually being right. I have no personal opinion on who is right, but you really do not have the visibility for me to believe that it is you. Especially when, without these two orders of magnitude improvement, electric cars for the masses, that automotive companies are investing billion in, are never going to happen. Tim, I'll be amazed if you can find any scientist who thinks you can get two orders of magnitude more storage in a chemical battery. The limits are down the the reaction energy of the elements involved, and these are well known. So why aren't these scientists explaining to politicians that their aspiration of 100% electric cars/vans/lorries is unachievable. To get mass take up of electric cars you have to have a range of 350 miles (in real use), a residual value after 5 years (so the initial battery needs to be useful for 10) with base models (still with that 350 range) selling for under 15 grand (today's money). At least 3 times a year, I have a requirement for a 400 mile, one day, journey - each way. At the moment we have electric cars that don't have the range for main family cars and that are too expensive for second cars. If we are never going to break out of that circle the sales for electric cars are never going to exceed 10%. And yet, worldwide, politicians ARE expectation to cast the IC engine to history by 2025. And I won't even start on how they expect people to charge up at home with planning rules that allow developers to build hundreds of houses on an estate with only communal parking. One space per household round here. Even if the family has 2 cars - needed when public transport doesn't run at weekends and not after 5pm (or before 10am) -- from KT24 in Surrey, England |
#60
Posted to uk.d-i-y
|
|||
|
|||
Christmas lecture
On Thursday, 29 December 2016 10:30:35 UTC, tim... wrote:
And I won't even start on how they expect people to charge up at home with planning rules that allow developers to build hundreds of houses on an estate with only communal parking. And in really rural areas, 25,000 people with no mains electricity. I wonder how long it will be until a child is killed by someone taking the cover off a lamp-post to get a free charge for their car with some croc clips. Owain |
#61
Posted to uk.d-i-y
|
|||
|
|||
Christmas lecture
On Thursday, 29 December 2016 10:52:16 UTC, wrote:
And in really rural areas, 25,000 people with no mains electricity. Edit - 25,000 properties, 75,000 people. http://www.yorkshirepost.co.uk/lifes...tery-1-7247270 "They generate their own electricity from a £30,000 wind turbine system that feeds a bank of batteries and they have a diesel generator for back-up." Wonder where they'll get their diesel from when all the petrol stations have been turned into sausage roll shops. Owain |
#62
Posted to uk.d-i-y
|
|||
|
|||
Christmas lecture
In article ,
wrote: On Thursday, 29 December 2016 10:30:35 UTC, tim... wrote: And I won't even start on how they expect people to charge up at home with planning rules that allow developers to build hundreds of houses on an estate with only communal parking. And in really rural areas, 25,000 people with no mains electricity. They'll be using diesel generators! I wonder how long it will be until a child is killed by someone taking the cover off a lamp-post to get a free charge for their car with some croc clips. Owain -- from KT24 in Surrey, England |
#63
Posted to uk.d-i-y
|
|||
|
|||
Christmas lecture
"charles" wrote in message ... In article , tim... wrote: "charles" wrote in message ... In article , mechanic wrote: On Wed, 28 Dec 2016 11:39:32 -0000, tim... wrote: It depends. If 'they' tax the f**k out of diesels etc or ban them totally in towns, they might be the only option for commuter journeys. Yeah right. Ban petrol cars whilst the alternatives all cost over 40 grand He was talking about diesel powered cars. I'm a bit surprised that the govt hasn't announced an intention to do this some time in the future. They are a menace. Then the Government will have to compensate the owners of diesel engined cars. We bought them because the Government recommeded them as creating less polution than petrol ones and reduced road tax to prove it. Most people who are suggesting banning diesels have suggested a date of 2025 for implementation. ISTM that 9 year's notice is sufficient for people who already own one, people who buy going forward from today, are already "on notice". The big problem with banning diesels is in lorry/van usage. This market uses diesels because of the greater longevity of the engines and forcing commercial operators to use vehicles that need scrapping sooner will push up costs Quite a few rail locos still use diesel, too. The cost of electrifying all the railways lines is going to be horrendous. but unlike electric cars the capital and maintenance costs of operating electric trains is less than for diesel Over a 40 year life-time the savings on the total costs of ownership of a fleet of electric trains pays back the costs of electrifying the line (well it did before unreasonable H&S pushed up the costs of electrification by 300%) tim |
#64
Posted to uk.d-i-y
|
|||
|
|||
Christmas lecture
"charles" wrote in message ... In article , tim... wrote: "Vir Campestris" wrote in message o.uk... On 27/12/2016 16:42, tim... wrote: "The Natural Philosopher" wrote in message news On 27/12/16 17:12, tim... wrote: For example, there are supposed to be some new battery technologies that are a couple of orders of magnitude better than currently available. I can assure you there are not.... I know, you have told me before but you are just a random person on the internet so why should I attribute more weight to you than to all the other "random" persons on the internet who disagree with you. Some of whom are actually academic physicists (even if I have never heard of them) and some people with a very real interest in it actually being right. I have no personal opinion on who is right, but you really do not have the visibility for me to believe that it is you. Especially when, without these two orders of magnitude improvement, electric cars for the masses, that automotive companies are investing billion in, are never going to happen. Tim, I'll be amazed if you can find any scientist who thinks you can get two orders of magnitude more storage in a chemical battery. The limits are down the the reaction energy of the elements involved, and these are well known. So why aren't these scientists explaining to politicians that their aspiration of 100% electric cars/vans/lorries is unachievable. To get mass take up of electric cars you have to have a range of 350 miles (in real use), a residual value after 5 years (so the initial battery needs to be useful for 10) with base models (still with that 350 range) selling for under 15 grand (today's money). At least 3 times a year, I have a requirement for a 400 mile, one day, journey - each way. At the moment we have electric cars that don't have the range for main family cars and that are too expensive for second cars. If we are never going to break out of that circle the sales for electric cars are never going to exceed 10%. And yet, worldwide, politicians ARE expectation to cast the IC engine to history by 2025. And I won't even start on how they expect people to charge up at home with planning rules that allow developers to build hundreds of houses on an estate with only communal parking. One space per household round here. Even if the family has 2 cars - needed when public transport doesn't run at weekends and not after 5pm (or before 10am) as there is round here but it isn't the same space, and if you aren't one of the first 3 people back home the next free space isn't always convenient. So it's impossible to put in a charge point that is fed from my electricity meter, which means that it will have to be commercially operated and charged for tim -- from KT24 in Surrey, England |
#65
Posted to uk.d-i-y
|
|||
|
|||
Christmas lecture
In article , tim...
wrote: "charles" wrote in message ... In article , tim... wrote: "charles" wrote in message ... In article , mechanic wrote: On Wed, 28 Dec 2016 11:39:32 -0000, tim... wrote: It depends. If 'they' tax the f**k out of diesels etc or ban them totally in towns, they might be the only option for commuter journeys. Yeah right. Ban petrol cars whilst the alternatives all cost over 40 grand He was talking about diesel powered cars. I'm a bit surprised that the govt hasn't announced an intention to do this some time in the future. They are a menace. Then the Government will have to compensate the owners of diesel engined cars. We bought them because the Government recommeded them as creating less polution than petrol ones and reduced road tax to prove it. Most people who are suggesting banning diesels have suggested a date of 2025 for implementation. ISTM that 9 year's notice is sufficient for people who already own one, people who buy going forward from today, are already "on notice". The big problem with banning diesels is in lorry/van usage. This market uses diesels because of the greater longevity of the engines and forcing commercial operators to use vehicles that need scrapping sooner will push up costs Quite a few rail locos still use diesel, too. The cost of electrifying all the railways lines is going to be horrendous. but unlike electric cars the capital and maintenance costs of operating electric trains is less than for diesel Over a 40 year life-time the savings on the total costs of ownership of a fleet of electric trains pays back the costs of electrifying the line (well it did before unreasonable H&S pushed up the costs of electrification by 300%) Overhead electrification often requires bridges to be rebuilt - or it did on the East Coast line. That is presumably why the government has put a stop to the proposed GWR electrification. -- from KT24 in Surrey, England |
#66
Posted to uk.d-i-y
|
|||
|
|||
Christmas lecture
On 29/12/16 12:03, tim... wrote:
Though back to my original point, he did, in the third lecture, tell us about future ideas that are being worked on - a three fold improvement in Lithium technology probably 10 years away. That is probably a nearly honest prediction to my mind Not enough, not quick enough, to meet (worldwide) government aspirations to have 100% electric car sales by 2025. Exactly. |
#67
Posted to uk.d-i-y
|
|||
|
|||
Christmas lecture
On 28/12/2016 21:14, Moron Watch wrote:
TV nowadays is primarily for entertainment; they even scrapped OU broadcasts years ago. The teaching programmes were scrapped (Mike Pentz anyone?) but several series and individual programmes are sponsored or produced in cooperation with the OU each year. -- F |
#68
Posted to uk.d-i-y
|
|||
|
|||
Christmas lecture
On 29/12/16 12:18, tim... wrote:
There is a second mass market for batteries where size/weight doesn't matter and only cost is an issue. That of home (or network) storage. And even with that opportunity, costs aren't falling. The point here being that unreliable intermittent energy is more expensive than reliable fossil or nuclear electricity even before you add the storage... to be clear, they are spending pots of money (billions) on *development* of electric cars Limited range BEVS or hybrids. No one is spending billions on long range EVs. The battery technology ain't there. tim |
#69
Posted to uk.d-i-y
|
|||
|
|||
Christmas lecture
On 29/12/16 12:24, Tim Streater wrote:
In article , tim... wrote: "Dave Plowman (News)" wrote in message ... In article , tim... wrote: "Dave Plowman (News)" wrote in message ... In article , tim... wrote: Actually you are wrong, we have batteries that are just about good enough for short range cars. a single order of magnitude might be enough to fly a commercial electric airliner to the USA. Short range cars are no good as "main" cars It depends. If 'they' tax the f**k out of diesels etc or ban them totally in towns, they might be the only option for commuter journeys. Yeah right. Ban petrol cars whilst the alternatives all cost over 40 grand The Nissan Leaf costs from about 17 grand. No it doesn't Dave. It costs whatever it costs. All that subsidies do is move some part of the cost from A to B, typically with a view to hiding it and making the item appear cheaper (when in fact it is not). In short: the cost to society is not altered by subsidies. In reality the cost to society is always INCREASED with subsidies. Cost effective technologies don't need subsidising. |
#70
Posted to uk.d-i-y
|
|||
|
|||
Christmas lecture
"tim..." wrote in message news Not enough, not quick enough, to meet (worldwide) government aspirations to have 100% electric car sales by 2025. Along with worldwide government aspirations to have World Peace by 2025 To end poverty by 2025 To end homelessness by 2025 and in the UK to finalise the details of Brexit by 2025 All bull**** IOW HTH |
#71
Posted to uk.d-i-y
|
|||
|
|||
Christmas lecture
"F" news@nowhere wrote in message o.uk... On 28/12/2016 21:14, Moron Watch wrote: TV nowadays is primarily for entertainment; they even scrapped OU broadcasts years ago. The teaching programmes were scrapped (Mike Pentz anyone?) but several series and individual programmes are sponsored or produced in cooperation with the OU each year. That's often simply to give an aura of enhanced respectability to Michael Moseley type programmes. Not that there's necessarily anything wrong with those as such. He's done a number on lifestyle topics, diet, exercise regimes etc using himself as a guinea-pig. Years ago such features wouldn't have seemed out of place on say "Blue Peter" or one of the early evening magazine programmes - "Tonight"or "Nationwide". While those who tired of "Farming Today" at 6 am. could switch on the telly instead and watch some bod with a beard and a fairisle jumper, standing in front of a whiteboard banging on about about vector spaces and eugen values. |
#72
Posted to uk.d-i-y
|
|||
|
|||
Christmas lecture
On 29/12/16 14:10, Moron Watch wrote:
vector spaces and eugen values. Eigenvalues... |
#73
Posted to uk.d-i-y
|
|||
|
|||
Christmas lecture
In article ,
tim... wrote: The big problem with banning diesels is in lorry/van usage. This market uses diesels because of the greater longevity of the engines and forcing commercial operators to use vehicles that need scrapping sooner will push up costs Don't think that really applies these days. Diesels simply have lower running costs - especially in stop start conditions like town deliveries. Although petrol/hybrid technology has rather changed that. -- *I'm not being rude. You're just insignificant Dave Plowman London SW To e-mail, change noise into sound. |
#74
Posted to uk.d-i-y
|
|||
|
|||
Christmas lecture
In article ,
tim... wrote: claiming that as it's a "city" car it only needs a range of 100 miles isn't valid as everybody needs to do the 300 mile trip once in a while and a car that can't do that for you is useless as your main car. Which is why you get the nonsense of people using Chelsea tractors to take the kids to school. -- *People want trepanners like they want a hole in the head* Dave Plowman London SW To e-mail, change noise into sound. |
#75
Posted to uk.d-i-y
|
|||
|
|||
Christmas lecture
In article ,
Dave Plowman (News) wrote: In article , tim... wrote: claiming that as it's a "city" car it only needs a range of 100 miles isn't valid as everybody needs to do the 300 mile trip once in a while and a car that can't do that for you is useless as your main car. Which is why you get the nonsense of people using Chelsea tractors to take the kids to school. some 10 year go, there was a cartoon in one of the colour weekend newspaper supplements: A woman said "We wnt our child to have plenasty of space, fresh air and security." "So, we've bought a large 4x4 with air conditioning and central locking." -- from KT24 in Surrey, England |
#76
Posted to uk.d-i-y
|
|||
|
|||
Christmas lecture
In article ,
Tim Streater wrote: In article , Dave Plowman (News) wrote: In article , tim... wrote: claiming that as it's a "city" car it only needs a range of 100 miles isn't valid as everybody needs to do the 300 mile trip once in a while and a car that can't do that for you is useless as your main car. Which is why you get the nonsense of people using Chelsea tractors to take the kids to school. Chelsea tractors are a nonsense whichever way you look at it. I was surprised to see an aquaintance with one last autumn. She didn't seem the type. She bought it as a result of last winter's weather - she lives in the country. -- from KT24 in Surrey, England |
#77
Posted to uk.d-i-y
|
|||
|
|||
Christmas lecture
"Chris Hogg" wrote in message
... On Wed, 28 Dec 2016 16:11:59 +0000 (GMT), "Dave Plowman (News)" wrote: In article , Chris Hogg wrote: Much of what Turnip says is. Or more accurately, delusion. He wasn't suggesting that people have nuclear powered cars, but he was pointing out that only atomic fuel has the energy density necessary to give cars the ranges to match those of today's ICE cars, Eh? You are going to have to re-fuel nuclear powered cars as often? If they ever exist, which they won't, the power source will long outlast the chassis and they'd never need refuelling. That's because they have a very high power density, so you'd actually only need a very small power source to last no longer than say fifteen years. But there'd be a limit to how small you could make it. But they'll never happen anyway. There's a table of energy densities here, http://tinyurl.com/a4tm2qm which shows how far ahead atomic stuff is, and how far behind ICE fuels are batteries. They may not be kosher or halal, but those ham and cheese sandwiches are impressive. |
#78
Posted to uk.d-i-y
|
|||
|
|||
Christmas lecture
On 12/27/2016 3:16 PM, The Natural Philosopher wrote:
On 27/12/16 17:14, tim... wrote: "Simon Mason" wrote in message ... On Tuesday, 27 December 2016 13:29:37 UTC, tim... wrote: Billed as "energy for the future" I was expecting an exposé of all of the new technology that is coming on stream in the next 20 years But with one minor exception, it was nothing more than a 50 year old physics lecture No fusion on the horizon yet then? Of course breakthrough within the next 10 years. but weren't they saying that 50 years ago? (OK I'll admit, in that respect, perhaps my 50 years was a small exaggeration) 60 years IIRC.. Well 59. Sputnik year. Also Windscale pile fire, opening of Jodrell Bank https://en.wikipedia.org/wiki/ZETA_(fusion_reactor) Quite a few slightly interesting things that year https://en.wikipedia.org/wiki/1957_i...United_Kingdom I rather like this one: 10 September €“ Tony Lock becomes the last bowler to reach 200 wickets in a first-class season,[25] a feat subsequently impossible due to limited-overs cricket and covered pitches having seen him in action at the Oval a number of times in the early 60's. |
#79
Posted to uk.d-i-y
|
|||
|
|||
Christmas lecture
On 27/12/2016 22:30, tim... wrote:
"The Natural Philosopher" wrote in message news On 27/12/16 18:42, tim... wrote: "The Natural Philosopher" wrote in message news On 27/12/16 17:12, tim... wrote: For example, there are supposed to be some new battery technologies that are a couple of orders of magnitude better than currently available. I can assure you there are not.... I know, you have told me before but you are just a random person on the internet so why should I attribute more weight to you than to all the other "random" persons on the internet who disagree with you. Because it is one of my specualist subjects? so you say but how do I know that One way you can tell is that on this aspect of battery technology I am in full agreement with TNP (and that doesn't happen all that often). About the best we can hope for with electrochemistry is at most another order of magnitude beyond present commercial Lion batteries eg. https://cleantechnica.com/2014/07/30...nergy-density/ Best so far if they can make it commercially viable and reliable. Physics tells us that. That's why I can say 'aint gonna happen' So why aren't these same Physicists explaining all that to the Automotive industry? It's awash with money. It's not like the can't afford to ask The problem is that they don't want to listen when the answers don't match their expectations. Back in my day it was going to be sodium sulphur batteries that would save the day. They are slightly better energy density than Lion but also a lot more volatile and tetchy. https://en.wikipedia.org/wiki/Sodium...sulfur_battery Compare that to the energy density per kg of petrol or kerosene and it is obvious just how far the gap still remains. Having air available to burn the fuel in makes a very big difference to the energy density. Hydrogen could win eventually if someone could make a way to contain it in bulk reliably without cryogenics, leaks or explosions. In fairness to the Christmas lecturer this year he did attempt to show to a young audience (and they are meant to be childrens' lectures) how much energy different technologies could produce in a fairly graphic way. kWhr is a bit too abstract for the younger members of the audience. AA batteries seems like as good a measure of energy as any to me if you are trying to explain things in very familiar units. Far better than Blue Peter's infamous "London Double Decker Buses" metric which as a child I had never seen. -- Regards, Martin Brown |
#80
Posted to uk.d-i-y
|
|||
|
|||
Christmas lecture
On Wed, 28 Dec 2016 14:00:30 -0000, tim... wrote:
I'm a bit surprised that the govt hasn't announced an intention to do this some time in the future. They are a menace. all those taxis and lorries would have to go They will in due course. |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|