[DUMBGRUNT]

FREE STUFF! Free Electricity.

[null and void]

ping

[facedown]

Perhaps best of all, it consumes no energy doing it.

I'm guessing the writer was not a science major.

[SpaceBar]

They are using the gravitational potential energy of rock they want at a lower elevation to charge batteries. Not exactly the bipolar transistor.

[Pikachu_Dad]

Not free electricity at all.

In a nutshell, They are just using gravity to lower the rocks to the ground.

They could just as easily toss the rocks off the side of the cliff.

[Vince Ferrer]

Sounds like a special case, or are we all supposed to live on top of hills and carry disposable weights around?

[The Antiyuppie]

Thermodynamics. It’s not just a good idea. it’s the law.

[Leaning Right]

It’s true that the truck’s batteries never have to be recharged. But the truck is still “consuming” energy, specifically the gravitational potential energy of the ore.

So the laws of physics still hold. There is no free lunch here. It’s a great way to power the truck, nevertheless.

From the article:

The dump truck, at 45 tons, ascends the 13-percent grade and takes on 65 tons of ore. With more than double the weight going back down the hill, the beast’s regenerative braking system recaptures more than enough energy to refill the charge the eDumper used going up.

[plain talk]

Here is the key claim

“The dump truck, at 45 tons, ascends the 13-percent grade and takes on 65 tons of ore. With more than double the weight going back down the hill, the beast’s regenerative braking system recaptures more than enough energy to refill the charge the eDumper used going up.”

[ConservativeMind]

Marking that trip around 20 times a day, Kuhn Schweitz says the eDumper produces 200 kwh of surplus energy every day, or 77 megawatt-hours a year. A typical dump truck uses between 11,000 and 22,000 gallons of diesel fuel a year. That saves up to 196 metric tons of global-warming carbon-dioxide gas a year.

All of that cost saves only the amount of CO2 per capita of under five citizens of Trinidad & Tobago.

CO2 per capita Produced (in Tons)

Trinidad & Tobago 37.78
https://cotap.org/per-capita-carbon-co2-emissions-by-country/

What a waste of money for just that purpose, if true.

[mozarky2]

FREE STUFF!
Yeah, they’re trying to convince us they’ve found a perpetual motion machine.

[LukeL]

Let’s all put tiny windmills on our cars, that way we can charge our batteries when we drive! Also dangle a giant magnet in front of a train that repels a magnet attached to the train.

[Meatspace]

A typical dump truck uses between 11,000 and 22,000 gallons of diesel fuel a year.

Those 22,000 gallons of diesel that are not being used should not simply be counted in units of liquid measurement, but in oil industry jobs that are lost.

Environmentalists never mention that their schemes cost jobs in the oil industry, but that is their goal. Their goal in to illuminate jobs.

Those 22,000 gallons of diesel would have created real jobs.

[Jayster]

I was liking the article until I read this BS.

“That saves up to 196 metric tons of global-warming carbon-dioxide gas a year”

[Karl Spooner]

A 9000 lb lithium battery is free, and lasts forever, and doesn’t produce any co2 to manufacture?

[Reeses]

World's largest EV: USS Gerald R. Ford

Range: unlimited

Carbon footprint before setting sail: don't ask

[the_daug]

Similar to train locomotives using the motors to brake and the power is bled off as heat.

[spokeshave]

The Entropy is strong with this one.

[poinq]

I think this truck hauls stuff down a hill breaking the whole time. Then drives back up empty to get more rocks. So what happens when the rocks are below the grade? Then is a power source needed?

[P.O.E.]

[Yo-Yo]

So, how many mines in the world are at the TOP of a mountain?