Thanks Dstock,
I have no idea the difference between liquid and pharmaceutical nitrogen. I often see full tanker trucks carrying liquid nitrogen, I really don't know if many facilities actually generate it, or contract with companies who can deliver massive quantities to large vacuum container at the site. Liquified gasses of all types will hold for extensive periods of time, but of course you're losing a bit every day.
A friend was recently saying his Tesla's lose a little of their charge every day. I didn't think about it at the time, but fuel cell vehicles that use liquid hydrogen would be no different, I'm uncertain if they'd lose more, or less than batteries. I suppose a little gasoline evaporates daily as well, but it's probably less significant than either of these other sources. I believe that we can all live with a little hydrogen being lost from a fuel cell powered vehicle, or a little of the charge being lost from an electric vehicle. What we cannot live with long term is the pollution generated with petroleum combustion, not in the quantities it's being produced today. Perhaps it can be dealt with in the future and the biproducts of combustion turned into a positive, but barring that, our climate will just continue to deteriorate if we can't keep these products out of the atmosphere.
I've been told by a friend who's in a position to know that we're closer to fusion power than I've been led to believe and in fact small fusion reactors aren't that far away. I've got to believe it would be pulsed fusion, I don't believe we can deal with the temperature developed in sustained fusion, but that's fine. As long as more energy is being captured than the energy initiating the fusion they can pulse it as fast, or slow, as they can capture and use the power.
We're all looking at computer screens, TV's, etc that actually pulse 60 or more times a second. To our eyes the image appears steady, but clearly it's not. Much the same could be the case in a fusion reactor, even if it were one pulse a second, minute, or hour, if the energy that you could capture was greater than what's needed to get the pulse, we'd be ahead. We'll always need some petroleum for many things, it's just best if it's not for combustion. I suspect that it won't be long before we have both electric and hydrogen fueled aircraft. Electrics will be used for short range flights, probably under 1000 miles, though better batteries are being created all the time. Hydrogen will of course be combusted with oxygen, but that just produces water vapor, not considered an environmental hazard.
I'd hope that in my lifetime the first commercial fusion power production plants are functional. Once that's done, and once it can be cheaply reproduced, we'll then be able to easily dramatically reduce pollution and perhaps even reverse climate change.
Gary
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