Posted on 08/18/2019 9:00:54 PM PDT by DUMBGRUNT
A quarry in Biel, Switzerland, is operating the world's largest electric vehicle, a 110-ton dump truck, to haul lime and marl off the side of a mountain to a cement factory. Perhaps best of all, it consumes no energy doing it.
How is that possible, you ask?
The Elektro Dumper—eDumper for short—made by Kuhn Schweitz, is based on a Komatsu HB 605-7: 30 feet long, 14 feet wide, and 14 feet tall. The tires are six feet high, and the dump bed reaches to more than 28 feet, fully raised.
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.
(Excerpt) Read more at greencarreports.com ...
ping
I'm guessing the writer was not a science major.
They are using the gravitational potential energy of rock they want at a lower elevation to charge batteries. Not exactly the bipolar transistor.
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.
Sounds like a special case, or are we all supposed to live on top of hills and carry disposable weights around?
Thermodynamics. It’s not just a good idea. it’s the law.
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.
He’s lousy at math too.
Use 20% of battery capacity going up.
Gain 10% going back down.
“It consumes no energy at all!”
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.”
> I’m guessing the writer was not a science major. <
That article is par for the course these days. Modern science is now based on personal opinions and gut feelings. No need for anyone to sit down and consider the facts of the matter. Global Warming is a perfect example of that.
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.
FREE STUFF!
Yeah, they’re trying to convince us they’ve found a perpetual motion machine.
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.
Actually you are the bad one at math:
“He reported reaching the top of the grade with 80 percent, then recovering battery charge to 88 percent on the way down”
That keeps happening, always in surplus.
Also the energy to fill the truck will be greater than any recharge you can get coasting down hill.
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.
Don’t forget the massive amount of heat those brakes generate while going down hill and the energy needed to power the air brakes.
And of course this only works because of all the energy expended to load and unload the dump truck. And a large supply of Fill at the top that was left by nature. Among other considerations. It is still a neat set up that works for this unique situation.
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