Liquid nitrogen (LN2) might slow down a T1000 for a bit, and it definitely helps make yummy ice cream during a classroom demo, but it has a lot of applications you may have never considered. Maybe one day it’ll help astronauts stay clean, or even power your car!
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Can Generators be made with compressed hydrogen as a power source? that's an idea
Worth noting that reliance on batteries also comes with the human cost of furthering the over exploitation of countries in the global south.
The whole "EV batteries are a fire hazard" has been debunked, I thought? I mean they are, but not more than say, a tank of gasoline. So making cheeky remarks of that kind seems inappropriate for a science channel. But maybe I remember that wrong?
What does "storing enough energy to power 480K homes" mean? Is this actually about power capacity, rather than energy? Or does this implicitly assume the typical midday-solar-peak to evening-consumption-peak storage period commonly assumed for Lithium-Ion batteries?
There are some mistakes in point #5. Firstly, it takes about 1 kilowatt hour of electricity to make 4 kg of liquid nitrogen. I have no idea how efficient a liquid nitrogen engine is, but this is a lot of electricity so this is the same limitation as electric cars. Secondly, I work with liquid nitrogen in my job, and a dewar of liquid nitrogen "goes dry" relatively quickly. In other words, the liquid nitrogen in a dewar "gas tank" would evaporate in a matter of a day or two assuming it is about the same size as a regular gas tank. This would be greatly inefficient in that you would have to refuel your nitrogen powered car first thing every day, and the fueling station would have to be where the car is parked. Finally, the evaporated nitrogen would of course vent into the surroundings of the vehicle. This is not a pollution issue as you say, but it would mean you could not keep your car in an enclosed space, no garages, because it would asphyxiate anyone who entered the garage.
SciShow usually does pretty good research, but you dropped the ball on this one.
I swear with the firefighting portion that if the scientists hadn't thought of a cryo grenade I would have lost the rest of my faith in humanity
Yall should do a video on water fuel cells, bet this comment will go unnoticed tho
LOL Imagine an underground parking garage full of nitrogen cars idling.
Nitrogen gas is lighter than air once it reaches thermal equilibrium. Nitrogen molecules has a mass of 14, whereas oxygen, the other main component of our atmosphere has a mass of 16 and as (ignoring extremes) a mole of any gas occupies the same volume at a given temperature and pressure. (pv=nRT). (other items – carbon dioxide heavier, water – there is not much hydrogen or helium in the atmosphere at sea level.
liquid expands to 700x it's liquid volume and displaces oxygen. watch out when you're around someone playing with it.
Ah, liquid nitrogen, the too often forgotten obsession of nerdish kids alongside dinosaurs and spaceships.
Not me remembering I forgot to refill our cryo freezing container at the lab today because of this video
No matter how unoriginal the joke is, this video is a very cool one!😉
NUCLEAR IS BEST
I actually said “that's cool” right before you made the joke about how you probably shouldn't use the word “cool”. I didn't even consider the pun, I just actually thought it was cool.
COOL COOL COOL COOL
The energy needed to make liquid nitrogen is not more likely to come from renewable sources than the one that charges batteries. Also the exhaust could expell oxygen from tunnels or recessed highways, although that is probably negligible. And when you fill your car up and park it for a while, a pressure valve will have to let the nitrogen escape as it warms up. The BMW hydrogen car does this.
A few years back I found this channel very interesting, now it just seems like there's no quality in the ideas they're trying to convey nitrogen takes energy to put into liquid form you cannot generate energy from nitrogen the chemical you are thinking of is hydrogen.
Is this nos?
Because gasoline vehicles never explode or catch fire 🙄…..
I remember putting my hand in a tank of liquid nitrogen
Was fun
🔬
so heres an idea…. a plug in electric nitrogen hybrid, you plug it in to recharge it with an internal gasifier
Power 400,000 homes… for how long? Energy doesn't equal power. Very cool concept though. Seems volumetrically efficient too as opposed to options like gravity storage facilities
Wait. Astronauts dont freeze under the LN shower? Insulation's that good? How bout the helmet glass? Won't it crack?
Also, LN for rorest fires? Why not dry ice? Isn't it easier to handle? No special containers. And you can drop it in blocks so they don't get blown by updrafts.
Title is a yes/no question! That should be enough to let everybody know that they don't need to watch the video.
I like the glasses guy a lot beter
Silly clickbait nonsense 😂 Solar is cleanest energy,,❤
I think the biggest problem with a cryogen-fueled car is that cryogens warm up over time . Your fuel is going to slowly boil away, and while every fuel or energy source has a dissipation rate, most are pretty low, cryogens are difficult to keep around in space , radiative heating alone makes storing cryogenic fuels difficult to keep around.
That's not to mention the energy efficiency concerns of cryocooling and the fact that the energy stored in the LN2 by cryo-cooling comes from the same grid that would be charging EVs, so there's no difference in pollution potential there.
Girl, you're kicking out early 90s Saturday morning PSA vibes. Try to show more of an edge, maybe lose the glasses and collar, and add a little cleavage.😉
I’m no expert but suppressing fires with liquid nitrogen seems unnecessarily expensive and complex