Their error is related to the text shown at 05:48. That's where they start calculations using the assumption that the air car uses only 0.00134kWhr/mile. Or only only 1.24 watt-hours per mile. The common alkaline AA battery has about 3 watt-hours, so per their calculations, an alkaline AA battery could move the air car more than 2 miles. Pretty good trick, if you can do it.
I have a perpetual motion machine I'd like to sell to Columbia University. I'm actually dumbfounded by this video. I guess the laws of thermodynamics isn't covered in Earth and Environmental Engineering. Simply Wow! I'm actually embarassed for you guys.
So you guys still haven't figured out that the "3 minute recharge" is by filling it from a larger tank that has previously been filled to a higher pressure!!!!!
You calculations at the 4:54 point are totally bogus, making the rest of the calculations false.
Heaven help us if you are typical of the students at Columbia's EAEE department.
Would the car be using the entire contents of this larger, higher pressure tank while filling up? I think not. The energy used by this car is only what it takes from the tank at the filling station.
@lespaul49 The onboard tank is 200 liters @ 350 bar.
The stored energy in kilojoules is approximately 0.1 x 0.2 m^3 * 350 bar * ln(350) = 41 megajoules = 11.4 kilowatt-hours. A 55% efficiency 350 bar compressor will draw about 21 kWhr from the grid to fill the tank. Dr. McFly erroneously calculates 0.16kW rather than 21kWhr. That factor of 100+ error makes the rest of conclusions erroneous.
Simple. Easy to verify. Many high school students could figure it out.
How does anyone keep tenure after making such howling errors. Or is the "professor" just a student doing a bit of lets pretend? 3 minutes to fill FROM A 4500psi BOTTLE BANK which took 6 hours to fill. GREAT GALLOPING STUPIDITY.
Noise The bloody video of MDI shows it's a noisy rattle trap
Distance
7.2km at bicycling speed.
Cretins, fools and morons who couldn't use a search engine to save themselves
Bogus, bogus, bogus. The most glaring error in this video is at 4:54 where Dr McFly calculates that a complete refill of the MDI air car tank requires only 0.16kWhr !!!!!
The actual figure is something higher than 22kWhrs. More than 137 times greater than 0.16kWhr!
The good Dr Matha McFly has figured out to make an overunity perpetual motion machine!!!!!!!
You don't need to have air filling stations at every gas station, you can fill the tank up at home with an onboard compressor and your home electricity in about 4 hours.
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Fascinating video! I'm actually building an air-powered vehicle myself! Check out my blog as I progress through the build!
air-kart.blogspot.com
DaveThePlanetSaver 1 day ago
2:48 ...MDI, that's an absolute concept! Monsieur Guy Nègre make it possible...
ChrisLuxembourg 11 months ago
Their error is related to the text shown at 05:48. That's where they start calculations using the assumption that the air car uses only 0.00134kWhr/mile. Or only only 1.24 watt-hours per mile. The common alkaline AA battery has about 3 watt-hours, so per their calculations, an alkaline AA battery could move the air car more than 2 miles. Pretty good trick, if you can do it.
Charlieutube99 11 months ago
I have a perpetual motion machine I'd like to sell to Columbia University. I'm actually dumbfounded by this video. I guess the laws of thermodynamics isn't covered in Earth and Environmental Engineering. Simply Wow! I'm actually embarassed for you guys.
Ian7570 1 year ago
I want two!
culturetree 1 year ago
So you guys still haven't figured out that the "3 minute recharge" is by filling it from a larger tank that has previously been filled to a higher pressure!!!!!
You calculations at the 4:54 point are totally bogus, making the rest of the calculations false.
Heaven help us if you are typical of the students at Columbia's EAEE department.
Charlieutube99 2 years ago
@Charlieutube99
Would the car be using the entire contents of this larger, higher pressure tank while filling up? I think not. The energy used by this car is only what it takes from the tank at the filling station.
lespaul49 5 months ago
@lespaul49 The onboard tank is 200 liters @ 350 bar.
The stored energy in kilojoules is approximately 0.1 x 0.2 m^3 * 350 bar * ln(350) = 41 megajoules = 11.4 kilowatt-hours. A 55% efficiency 350 bar compressor will draw about 21 kWhr from the grid to fill the tank. Dr. McFly erroneously calculates 0.16kW rather than 21kWhr. That factor of 100+ error makes the rest of conclusions erroneous.
Simple. Easy to verify. Many high school students could figure it out.
Charlieutube99 5 months ago
How does anyone keep tenure after making such howling errors. Or is the "professor" just a student doing a bit of lets pretend? 3 minutes to fill FROM A 4500psi BOTTLE BANK which took 6 hours to fill. GREAT GALLOPING STUPIDITY.
Noise The bloody video of MDI shows it's a noisy rattle trap
Distance
7.2km at bicycling speed.
Cretins, fools and morons who couldn't use a search engine to save themselves
fizzguts 2 years ago
Bogus, bogus, bogus. The most glaring error in this video is at 4:54 where Dr McFly calculates that a complete refill of the MDI air car tank requires only 0.16kWhr !!!!!
The actual figure is something higher than 22kWhrs. More than 137 times greater than 0.16kWhr!
The good Dr Matha McFly has figured out to make an overunity perpetual motion machine!!!!!!!
Charlieutube99 2 years ago
Well put together... a balanced view. Excellent effort.
gnomaedh 3 years ago
instead of solar panels on gas stations, how about nuclear power plants charging up the air cars? THAT WOULD BE SO COOL!!!
senuk84 3 years ago
You don't need to have air filling stations at every gas station, you can fill the tank up at home with an onboard compressor and your home electricity in about 4 hours.
Great video by the way.
mikedough2 3 years ago