Earthwormjim91

joined 1 year ago
[–] Earthwormjim91@lemmy.world 3 points 8 months ago

It’ll become rarer, but will never go away. As long as diesel is being made, heavier duty trucks will have a diesel option.

Even if it becomes a solely biodiesel option. You’re just not going to beat the efficiency, energy density, and quick refueling of an internal combustion engine until you can have a battery 1/15 the mass for the same energy, and can charge the thing in under half an hour, and doesn’t cost more than the vehicle itself when it’s time to replace it.

ICE engines, and diesels in particular can run for millions of miles. The record for a semi mileage is just over 3 million miles on the engine. You’re not going to find a battery pack that can go anywhere remotely close to that long. Especially in a heavy use vehicle like a truck that will be constantly going through charge cycles.

Just looking at the Tesla semi, the 500 mile range battery is 900kWh. A 100kWh model S battery costs $15,000 to replace, with $13,500 of that being the battery itself. Scaled up, the semi battery would be in the $90-100k range to replace.

The average semi runs around 100,000 miles per year. If you can get 1,000 full charge cycles out of the battery, you’d be replacing one every 5 years to the tune of nearly $100k each time. Not to mention replacing the electric motors themselves at several grand pop, and those don’t tend to last as long as the battery. Especially in a truck hauling 82,000lbs.

[–] Earthwormjim91@lemmy.world -2 points 8 months ago (2 children)

For a freight train you absolutely couldn’t. Even high power lines aren’t powerful enough to power the electric motors on a locomotive through the standard way that things like light rails operate.

That locomotive example I used has a 4.5MW electric motor output. It would be next to impossible to get 4.5MW from the line to the motor using a third rail or something. The power draw would be too great for a freight train with say 6 locomotives. I live 50 feet from a rail line and 6 locomotives is about the average I see per train.

And just for scale, there are over 26,000 Class I locomotives like that in service. If each one ran for only 12 hours per day on average, that would eat up half a trillion kWh of power per year. That would be 12% of the total US electricity production per year, assuming no losses in transmission or efficiency.

[–] Earthwormjim91@lemmy.world 4 points 8 months ago (4 children)

Most if not all freight locomotives are diesel electric as well.

You’re just not going to beat the energy density of diesel. 1 gallon of diesel fuel has roughly 40kwh worth of energy in it. Modern diesel motors are around 35% efficient.

So you’re looking at ~14kwh of useable energy from 1 gallon of diesel, weighing 7 pounds. So 1kwh is around 0.5lbs.

1kwh of EV battery currently weighs ~13-14lbs based on the model 3s battery capacity and weight as well as the Hummer EV.

So on a train or truck with a 5,000gal tank (just using the AC600X locomotive as an example), you’re talking 35,000lbs of carried fuel and 70,000kWh of useable energy.

To carry the same energy, you would need 910,000-980,000lbs of batteries. Twice the weight of the locomotive itself. Even if we increase the density by a factor of 10, you still need almost 3x the weight of batteries as you do diesel.

And the time to charge a 70MWh battery would be insanely prohibitive. Like a few days each time. With a 1MW charger you’re looking at minimum 70 hours if you could run at peak power with no losses. Realistically more like 80 hours with how chargers slow down as the battery gets full and charging losses.

Natural gas could used to be a little bit cleaner, but CNG vehicles use 12-15% more fuel to get the same power than diesels so it would really be a wash on CO2 emissions. And you would have to replace every diesel engine out there along with all the infrastructure just for a less efficient power source. Natural gas is phenomenal for large scale power plants, not as much for ICE vehicles.

It’s the same issue with large ships. You just can’t beat the energy density of petroleum. And ships use the nastiest byproducts of oil refining already because they’re so cheap. Banning using bunker fuel would just cause them to switch to diesel for a little more rather than go full EV. Going back to sail boats is going to happen before EV boats lol.

Same with planes. Batteries are just too heavy for aircraft in any large capacity. Plus it’s not like we really want a bunch of giant flying lithium bombs overhead. Putting out an EV fire is already insanely difficult. Imagine trying to put out the fire from a battery 10x larger that crashed in the woods somewhere.

Diesel isn’t going anywhere any time soon. I would imagine we start producing more biodiesel before the really heavy machinery goes full electric. And as long as there is diesel in use, it’s gonna make its way to consumers in large pickups because diesel can’t just sit around forever and companies are gonna do whatever they can to keep production high to make money.

[–] Earthwormjim91@lemmy.world 19 points 9 months ago (12 children)

Definitely not. Passenger cars will go EV relatively quickly, but you’re not going to see ICE go away in your lifetime.

Heavy duty trucks, aircraft, ships, etc all use petroleum combustion. That’s not going away any time soon. And as long as that’s still around they’ll still be making diesel.

You’ll end up seeing EV half ton and quarter ton pickups, potentially EV replacing the gas option in 2500+ trucks, but they’re going to have a diesel option for decades.

[–] Earthwormjim91@lemmy.world 1 points 9 months ago

Actually pretty much none of them require a CDL unless you’re operating commercially.

You can go buy a school bus right now and drive it around without a cdl. Only needed to carry passengers.

You don’t need a CDL to be a delivery van driver either at all.

The current GVWR limit before you need a CDL is 26,000lbs. No light duty vehicle on the road comes close to that. Even the biggest Ram 4500 caps out at 16,500lbs GVWR. The Hummer EV caps out at 10,550lbs.

[–] Earthwormjim91@lemmy.world 14 points 9 months ago

Huh I guess 4 guest appearances on a soap opera outweigh her entire musical career, including 2 Grammy nominations this year.

[–] Earthwormjim91@lemmy.world 2 points 9 months ago

The trick is getting an overloaded burrito bowl and then two tortillas on the side.

Two burritos for barely more than the cost of one.

[–] Earthwormjim91@lemmy.world 5 points 9 months ago

Nah we have largely insulated ourselves from that. That was the point of opening up more drilling and more domestic oil production.

OPEC tried a few months ago to cut their production and raise prices and it didn’t even move the needle for us here.

[–] Earthwormjim91@lemmy.world 8 points 9 months ago

A fucking German company.

[–] Earthwormjim91@lemmy.world 5 points 9 months ago

Butter chicken is indisputably from India.

Tikka masala is what you’re thinking of, which is generally recognized to have been created in the UK. Scotland, I believe.

[–] Earthwormjim91@lemmy.world 5 points 9 months ago (2 children)

That means that the 2023 ID.4 Standard model, with a 62 kWh battery, an EPA-estimated range of 209 miles, and a starting MSRP of $38,995, would cost $31,495 after the tax credit is applied.

Key to mention that the credit is not refundable. It can only take your income tax burden down to $0, and not below. So for the typical family with a couple of kids, making 75k or so, chances are you won’t get the full credit.

[–] Earthwormjim91@lemmy.world 6 points 9 months ago

The average LLV is also over 30 years old with hundreds of thousands of stop and go miles on them, given that they stopped making them in 1994.

Of course they’re unreliable now. There hasn’t been a new one built in 30 years.

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