Range: unlimited
Carbon footprint before setting sail: don't ask
Posted on 08/18/2019 9:00:54 PM PDT by DUMBGRUNT
or an engineering grad student
And it is still a surplus amount of battery left after going back up.
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”
A 9000 lb lithium battery is free, and lasts forever, and doesn’t produce any co2 to manufacture?
I am lousy at math!
But wouldn’t the truck start off at 100% capacity at the bottom.
80% left at the top.
Gain 8% on the way down.
So second trip start off at 88%, use 20% and reach the top at 70.4%. Gain 10%, so start third trip at 78%?
Although the rest of the article does make it sound like they have a surplus of energy - so I must be missing something.
You still needed to get the ore from the mine into the bed of the truck. You then need to unload the truck. You may be able to charge a battery this way but overall there is still a net loss in total energy. Same thing with burning coal. Nature took a lot of energy to produce coal and we can only get a fraction of that out of it. With energy you will always lose other wise you just created something out of nothing.
so if we create a car for someone who lives on top of a hill, they could go to town downhill, using their brakes to regenerate energy, and the car would go back home without needing to recharge- basically- sounds good- starts looking for house on a hill lol
Our society is generations away from coming close to fading from the petroleum life blood of our world.
It doesn't say what the starting level is.
The article says that it generates 200 kWh surplus per day (10 kWh / load) with a 600 kWh battery installed. That's a net gain of 1.67% on every trip. Since it goes from 80% to 88% on the downward trip, the upward trip must cost 6.33% of the 600 kWh battery, or 40 kWh.
Range: unlimited
Carbon footprint before setting sail: don't ask
Similar to train locomotives using the motors to brake and the power is bled off as heat.
The system only works when the machine has a hill to go up and down. How efficient is the machine on a flat surface all day long, where it can’t use gravity to charge a battery?
I’ve yet to see a story on an electric vehicle where there isn’t some significant omission about something, in order to make the product the next greatest invention.
The Entropy is strong with this one.
What if you wanted to move the rocks up the hill?
And Carbon Dioxide is not a “Global Warming gas.” It is the food catalyst for all plant life on earth.
Works but only if you could carry a large boulder down the hill and leave it in town each time
what if i find a really heavy friend to travel with me one way?
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?
Turn your sound on.
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