Tesla's battery day

[EVer]

It's super easy, barely an inconvenience:

1. You start with an arbitrary claim, such as that a 100kW solar array will fit in 1,000 ft^2 (never mind that a 100kW solar array needs at least 7 times that much area).
2. You then imagine that a 40 foot trailer is 25 feet wide.
3. You then imagine that the 25 foot wide trailer has batteries with enough capacity to always be able to store the converted energy.
4. You then imagine that all tractor trailers will have an efficiency pulled from the Tesla website, despite that estimated efficiency being a function of the Tesla design, and that a mix-and-match will be significantly less efficient, even more so since a good 8-and-a-half feet of the trailer will be sticking out from each side rather than tucked behind the tractor.
5. You then work backwards. If it requires 2kWh/mile and I want to say my 25 foot wide tractor trailer will gain 100-200 miles each day from the 1/7th scale solar farm on the roof, it only needs to be in the sun for 2-4 hours.

Q.E.D.

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[JCHLi]

It's super easy, barely an inconvenience:

1. You start with an arbitrary claim, such as that a 100kW solar array will fit in 1,000 ft^2 (never mind that a 100kW solar array needs at least 7 times that much area).
2. You then imagine that a 40 foot trailer is 25 feet wide.
3. You then imagine that the 25 foot wide trailer has batteries with enough capacity to always be able to store the converted energy.
4. You then imagine that all tractor trailers will have an efficiency pulled from the Tesla website, despite that estimated efficiency being a function of the Tesla design, and that a mix-and-match will be significantly less efficient, even more so since a good 8-and-a-half feet of the trailer will be sticking out from each side rather than tucked behind the tractor.
5. You then work backwards. If it requires 2kWh/mile and I want to say my 25 foot wide tractor trailer will gain 100-200 miles each day from the 1/7th scale solar farm on the roof, it only needs to be in the sun for 2-4 hours.

Q.E.D.

Better patent that design before it ends up on Tesla's newest truck!

 

[Raymondjram]

Such as the 2022 Ford electric F-150. Ford will expand that to its F-series line later.

 

[Raymondjram]

Wouldn't get anywhere near that on my vehicles - I have a garage. ?

Put the panels on the garage roof and get the charge while parked.

 

[Raymondjram]

Trains can charge during their run. The rails need not to be completely electrified, as in subways. Just add special third rail sections on the routes with HV charging when the trrain passes over, or at each station while stopped.

 

[Raymondjram]

Same for freight rail. Use sections with a third rail and HV charging. It will charge only for minutes but will add miles. It will be justified when going uphill. Regeneration can be used when going downhill.

 

[EVer]

Better patent that design before it ends up on Tesla's newest truck!

Drag coefficient 3.6.

 

[ClaudeMach-E]

That's a good question. I would suggest though that it might be that with mandatory limits to daily driving hours (which the US has and I assume other places do), and with say 350KW DCFC at truck stops, it could work out. Build a crap load of them, and the drivers can do their mandatory downtime while charging.

There's the charging network coming up again as a potential blocker of course.

Not to mention the possibility for a driver to drive one truck and the second one is on remote to the first one

 

[dbsb3233]

Not to mention the possibility for a driver to drive one truck and the second one is on remote to the first one

That sounds good until we remember how expensive each one is. Having to buy two to do the service of one because the other has to be out of service charging so much could be a big $$ problem.

 

[JCHLi]

Light, as a representation of weight is relative. However, any extra weight will impact the total load of the vehicle and reduce capacity (unless perhaps, they are lighter than air?).

If there is only 400 square feet of space on top of a trailer, adding the rig will not more than double this area. Even the rigs will a full sleeping quarters aren't even close to half the length of a trailer.

As far as going with the "best tech" for panels, what is the 425kW representing? How much area and time are required to generate that?

 

[EVer]

It's a power rating and therefore time = continuous given full sun.

You'd need almost 1100 of the highest power rated panels (which are maxing out around 400W in the standard 40" X 66" form factor). Maybe the word "acreage" in the post in question is a tell. A 425kW solar array constructed from state of the art panels would require nearly half an acre.

 

[JCHLi]

It's a power rating and therefore time = continuous given full sun.

You'd need almost 1100 of the highest power rated panels (which are maxing out around 400W in the standard 40" X 66" form factor). Maybe the word "acreage" in the post in question is a tell. A 425kW solar array constructed from state of the art panels would require nearly half an acre.

So, you're saying we just need to find a way to turn 400 square feet into 21,000 square feet? I think we can make that work by early 2021!

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