Electric Cars
-
djj55 wrote:
What we need is a new type of power source instead of batteries
Yes, if only there was some convenient form of fuel that could be easily transported, could be stored is sufficiently high volumes to allow for longer journeys between energy reserves run low and that was sufficiently well understood to allow for simple maintenance of the drive system. Of course it would also require the construction of a massive infrastructure and have tax raising ability and profit making facilities. Hmmm, I wonder if anyone could suggest what we could use instead of electricity?
------------------------------------ I will never again mention that I was the poster of the One Millionth Lounge Post, nor that it was complete drivel. Dalek Dave CCC Link[^] Trolls[^]
If we could only harness flatulence, problem solved. :)
-
If we could only harness flatulence, problem solved. :)
It's been tried (well, mathane and coal gas) but the problem is the size of the tank needed: Note the roof mounted fuel tank[^]
Ideological Purity is no substitute for being able to stick your thumb down a pipe to stop the water
-
Hello, I am posting here because it is an environmental issue, and I do not want to be down voted for living which I seem to get else where. How do heaters effect the charge life of the car? Does the weight of the batteries help with traction? If stuck how long can I use my heater before problems start (lack of charge, battery heat up, whatever)? What we need is a new type of power source instead of batteries that can be exchanged when flat and off you go. Say about the size of a jump drive. :)
Is it b*ll*cks an environmental issue: all you are doing is pushing the direct pollution to "arms-length" and increasing the carbon footprint of the vehicle in terms of whole-life cost.
Ideological Purity is no substitute for being able to stick your thumb down a pipe to stop the water
-
Hello, I am posting here because it is an environmental issue, and I do not want to be down voted for living which I seem to get else where. How do heaters effect the charge life of the car? Does the weight of the batteries help with traction? If stuck how long can I use my heater before problems start (lack of charge, battery heat up, whatever)? What we need is a new type of power source instead of batteries that can be exchanged when flat and off you go. Say about the size of a jump drive. :)
djj55 wrote:
How do heaters effect the charge life of the car?
Not much. The energy required to get a tone and a half of car moving is much more than to heat a few cubic meters of air. I could do the maths but cant be bothered. :)
djj55 wrote:
Does the weight of the batteries help with traction?
Only in mud.
djj55 wrote:
If stuck how long can I use my heater before problems start
Ok, time to do the maths.... ke = 1/2 mv^2, so disalowing for losses a car doing about 70 mph needs 1/2 * 1500 * 30 * 30 = 675000 joules. For 2 m^3 of air, it needs 1000 joules per kg per `C, so about 30000 joules should se you snug and warm. Of course this is theoretical, since the car wil generate friction, motly air drag (and roling resistance.) = 1/2 pv^2 CA, so 1/2 * 1 * 30 * 30 * 2 * 0.34 (drag coefficient for an average car today) = 306 newtons. At 30 m/s thats using 9000 joules per second. You can see why drag is such a drag. :)
djj55 wrote:
What we need is a new type of power source instead of batteries that can be exchanged when flat and off you go
Bateries, because of their weight and size are a non starter. The only feasible fuel of the future is hydrogen.
============================== Nothing to say.
-
djj55 wrote:
How do heaters effect the charge life of the car?
Not much. The energy required to get a tone and a half of car moving is much more than to heat a few cubic meters of air. I could do the maths but cant be bothered. :)
djj55 wrote:
Does the weight of the batteries help with traction?
Only in mud.
djj55 wrote:
If stuck how long can I use my heater before problems start
Ok, time to do the maths.... ke = 1/2 mv^2, so disalowing for losses a car doing about 70 mph needs 1/2 * 1500 * 30 * 30 = 675000 joules. For 2 m^3 of air, it needs 1000 joules per kg per `C, so about 30000 joules should se you snug and warm. Of course this is theoretical, since the car wil generate friction, motly air drag (and roling resistance.) = 1/2 pv^2 CA, so 1/2 * 1 * 30 * 30 * 2 * 0.34 (drag coefficient for an average car today) = 306 newtons. At 30 m/s thats using 9000 joules per second. You can see why drag is such a drag. :)
djj55 wrote:
What we need is a new type of power source instead of batteries that can be exchanged when flat and off you go
Bateries, because of their weight and size are a non starter. The only feasible fuel of the future is hydrogen.
============================== Nothing to say.
-
Is it b*ll*cks an environmental issue: all you are doing is pushing the direct pollution to "arms-length" and increasing the carbon footprint of the vehicle in terms of whole-life cost.
Ideological Purity is no substitute for being able to stick your thumb down a pipe to stop the water
Electric cars are quite interesting, you can get massive torque fomr an electic motor, and no need for a gear box. I am looking forward to them, OK, they wont have the same vibe a decent petrol car, but they will be fun, none the less. :)
============================== Nothing to say.
-
If we could only harness flatulence, problem solved. :)
Ya know, I was going to quote Robin Williams, but I think I'll just link to it instead... Introducing the new Ford Colon...[^] (Warning: NSFW language) ...and hopefully that's the right video, cause I can't actually view it in the office.
Proud to have finally moved to the A-Ark. Which one are you in?
Author of the Guardians Saga (Sci-Fi/Fantasy novels) -
Electric cars are quite interesting, you can get massive torque fomr an electic motor, and no need for a gear box. I am looking forward to them, OK, they wont have the same vibe a decent petrol car, but they will be fun, none the less. :)
============================== Nothing to say.
-
-
djj55 wrote:
How do heaters effect the charge life of the car?
Not much. The energy required to get a tone and a half of car moving is much more than to heat a few cubic meters of air. I could do the maths but cant be bothered. :)
djj55 wrote:
Does the weight of the batteries help with traction?
Only in mud.
djj55 wrote:
If stuck how long can I use my heater before problems start
Ok, time to do the maths.... ke = 1/2 mv^2, so disalowing for losses a car doing about 70 mph needs 1/2 * 1500 * 30 * 30 = 675000 joules. For 2 m^3 of air, it needs 1000 joules per kg per `C, so about 30000 joules should se you snug and warm. Of course this is theoretical, since the car wil generate friction, motly air drag (and roling resistance.) = 1/2 pv^2 CA, so 1/2 * 1 * 30 * 30 * 2 * 0.34 (drag coefficient for an average car today) = 306 newtons. At 30 m/s thats using 9000 joules per second. You can see why drag is such a drag. :)
djj55 wrote:
What we need is a new type of power source instead of batteries that can be exchanged when flat and off you go
Bateries, because of their weight and size are a non starter. The only feasible fuel of the future is hydrogen.
============================== Nothing to say.
Erudite__Eric wrote:
djj55 wrote:
Does the weight of the batteries help with traction?
Only in mud.
The people reported in the auto forums that Nissan Leaf is extremely stable in any conditions. The reason is the very low center of the gravity (like a sports car) due to the heavy battery.
There is only one Vera Farmiga and Salma Hayek is her prophet! Advertise here – minimum three posts per day are guaranteed.
-
Hello, I am posting here because it is an environmental issue, and I do not want to be down voted for living which I seem to get else where. How do heaters effect the charge life of the car? Does the weight of the batteries help with traction? If stuck how long can I use my heater before problems start (lack of charge, battery heat up, whatever)? What we need is a new type of power source instead of batteries that can be exchanged when flat and off you go. Say about the size of a jump drive. :)
djj55 wrote:
How do heaters effect the charge life of the car?
As Eric said not much, the AC from the other hand…
djj55 wrote:
Does the weight of the batteries help with traction?
Yes – better traction and better stability than a regular car (I’m talking for Nissan Leaf)
djj55 wrote:
If stuck how long can I use my heater before problems start (lack of charge, battery heat up, whatever)?
You have to check this on the Nissan website; they have a lot of info for the battery. For example I was pleased to learn that after 10 years the battery loses only 20% of its capacity and that it is not a solid piece but rather replaceable sections.
There is only one Vera Farmiga and Salma Hayek is her prophet! Advertise here – minimum three posts per day are guaranteed.
-
I dont think electric cars cost more than petrol in manufacturing (fuel source aside).
============================== Nothing to say.
Environmentally wise considerably less, because you don’t have some parts that consumes enormous amounts of energy to produce (engine, pumps, complicated gear box and transition etc.). They are a little more expensive now, but it’s because the technology is relatively new and the high demand. As for the battery it’s not very environment friendly, but in Nissan Leaf (and his Renault counterpart) the battery life is >10 years and it’s created from a replaceable sections.
There is only one Vera Farmiga and Salma Hayek is her prophet! Advertise here – minimum three posts per day are guaranteed.
-
djj55 wrote:
How do heaters effect the charge life of the car?
As Eric said not much, the AC from the other hand…
djj55 wrote:
Does the weight of the batteries help with traction?
Yes – better traction and better stability than a regular car (I’m talking for Nissan Leaf)
djj55 wrote:
If stuck how long can I use my heater before problems start (lack of charge, battery heat up, whatever)?
You have to check this on the Nissan website; they have a lot of info for the battery. For example I was pleased to learn that after 10 years the battery loses only 20% of its capacity and that it is not a solid piece but rather replaceable sections.
There is only one Vera Farmiga and Salma Hayek is her prophet! Advertise here – minimum three posts per day are guaranteed.
Traction and stability are different things. A low center of gravity will always help stability, but traction will only be helped in situations where the extra weight can cut through some substance to a sound base. Otherwise the extra weight on say tarmac if offset by the greater inertia giving no increase in traction at all. And low center of gravity cars can also exist, if the designers are willing to do it. The Honida mini van was a good example. The alfasud too. Low, flat engines. Of course the Alfa was also one of the best handling cars ever. :)
============================== Nothing to say.
-
djj55 wrote:
How do heaters effect the charge life of the car?
Not much. The energy required to get a tone and a half of car moving is much more than to heat a few cubic meters of air. I could do the maths but cant be bothered. :)
djj55 wrote:
Does the weight of the batteries help with traction?
Only in mud.
djj55 wrote:
If stuck how long can I use my heater before problems start
Ok, time to do the maths.... ke = 1/2 mv^2, so disalowing for losses a car doing about 70 mph needs 1/2 * 1500 * 30 * 30 = 675000 joules. For 2 m^3 of air, it needs 1000 joules per kg per `C, so about 30000 joules should se you snug and warm. Of course this is theoretical, since the car wil generate friction, motly air drag (and roling resistance.) = 1/2 pv^2 CA, so 1/2 * 1 * 30 * 30 * 2 * 0.34 (drag coefficient for an average car today) = 306 newtons. At 30 m/s thats using 9000 joules per second. You can see why drag is such a drag. :)
djj55 wrote:
What we need is a new type of power source instead of batteries that can be exchanged when flat and off you go
Bateries, because of their weight and size are a non starter. The only feasible fuel of the future is hydrogen.
============================== Nothing to say.
Don't need fuel. Just need an elctromagnetic grapple. Shoot it out at the next truck to pass by and away you go! :)
So I rounded up my camel Just to ask him for a smoke He handed me a Lucky, I said "Hey, you missed the joke." My Mu[sic] My Films My Windows Programs, etc.
-
Is it b*ll*cks an environmental issue: all you are doing is pushing the direct pollution to "arms-length" and increasing the carbon footprint of the vehicle in terms of whole-life cost.
Ideological Purity is no substitute for being able to stick your thumb down a pipe to stop the water
-
All we need to do is figure out what humans did to get us out of the the medieval warm period. Problem solved.
You mean the one where the Thames froze every winter...
Ideological Purity is no substitute for being able to stick your thumb down a pipe to stop the water
-
You mean the one where the Thames froze every winter...
Ideological Purity is no substitute for being able to stick your thumb down a pipe to stop the water
-
It's been tried (well, mathane and coal gas) but the problem is the size of the tank needed: Note the roof mounted fuel tank[^]
Ideological Purity is no substitute for being able to stick your thumb down a pipe to stop the water
Or just keep refilling a smaller tank.
