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Topic: Weather, Climate, Environment, and Energy

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MrNubbz

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Re: Weather, Climate, and Environment
« Reply #1778 on: August 21, 2019, 02:26:22 PM »
Whether it's electricity, or H2, or propane, or gasoline, or banana peels in a Mr. Fusion reactor, my autonomous car will be able to drive itself wherever it needs, to refuel, either whilst I work, or sleep, or attend a college football game.
Little early to be getting into the Tito's isn't it?
Suburbia:Where they tear out the trees & then name streets after them.

Anonymous Coward

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Re: Weather, Climate, and Environment
« Reply #1779 on: August 21, 2019, 02:28:00 PM »
Whether it's electricity, or H2, or propane, or gasoline, or banana peels in a Mr. Fusion reactor, my autonomous car will be able to drive itself wherever it needs, to refuel, either whilst I work, or sleep, or attend a college football game.
That is fair. I'd still argue that not needing to expend energy (travel to a station) to get energy (refuel) is superior, but you are generally right. Even then, you are correct on a practical grounds (that you might not care what your car is doing), not whether what your car is doing will feel archaic. I still think refueling stations are dated to become archaic.
« Last Edit: August 21, 2019, 02:35:46 PM by Anonymous Coward »

Anonymous Coward

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Re: Weather, Climate, and Environment
« Reply #1780 on: August 21, 2019, 02:32:28 PM »
The researchers have found that injecting oxygen into the fields raises the temperature and liberates H2, which can then be separated from other gases via specialist filters. Hydrogen is not pre-existing in the reservoirs, but pumping oxygen means that the reaction to form hydrogen can take place.

I am confused.
Are you confused in a semantic way -- getting hung up on the definition of "forming hydrogen" and whether they are talking about creating the atoms or creating the gas?

Aside from those semantics (and beside the fact that I disprefer the technology), what they are saying fits my intuition. "Hydrogen can be stripped from hydrocarbons and converted to H2 in an oxygen-dependent manner."

But the confusion that endures for me is that doping this region with oxygen sounds a lot like burning. And I'd worry that might form and then immediately expend the H2.

Cincydawg

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Re: Weather, Climate, and Environment
« Reply #1781 on: August 21, 2019, 02:41:42 PM »
Well, normally, injecting oxygen into proximity with a hydrocarbon under pressure and perhaps with heat either does nothing, or causes combustion and creation of CO2.

Oxygen oddly enough generally is an oxidant.  To convert a hydrocarbon to hydrogen (and carbon) I think you need a reducing agent of some sort.  So, what's the empirical equation here?  CHn + O2 -->  CO2 plus H2?


Energetically, that is "down hill" obviously.  Ergo, I'm confused.  Maybe I could read their patent.

FearlessF

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Re: Weather, Climate, and Environment
« Reply #1782 on: August 21, 2019, 02:43:23 PM »
Little early to be getting into the Tito's isn't it?
it's well after noon in the Central time zone for Utee and I.

what in the wide wide world of sports are you waiting for?
"Courage; Generosity; Fairness; Honor; In these are the true awards of manly sport."

Cincydawg

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Re: Weather, Climate, and Environment
« Reply #1783 on: August 21, 2019, 02:45:09 PM »
I found a few patents and applications assigned to Proton Tech, but none of them relate to this.  

utee94

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Re: Weather, Climate, and Environment
« Reply #1784 on: August 21, 2019, 03:14:45 PM »
That is fair. I'd still argue that not needing to expend energy (travel to a station) to get energy (refuel) is superior, but you are generally right. Even then, you are correct on a practical grounds (that you might not care what your car is doing), not whether what your car is doing will feel archaic. I still think refueling stations are dated to become archaic.
Oh yeah, I completely agree.  Just having a little fun.

I think that once the autonomous car becomes ubiquitous, they'll simply be fleet vehicles with 3rd party ownership-- at least in urban environments.  So however it refuels, it will do it on "its" time rather than on mine.  It will arrive at my door fully fueled and capable of meeting the parameters of travel to whatever destination I've indicated.

Still gotta figure out how they're going to put my boat in the water for me, though!

utee94

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Re: Weather, Climate, and Environment
« Reply #1785 on: August 21, 2019, 03:15:23 PM »
it's well after noon in the Central time zone for Utee and I.

what in the wide wide world of sports are you waiting for?
And this!

MrNubbz

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Re: Weather, Climate, and Environment
« Reply #1786 on: August 21, 2019, 03:18:15 PM »
it's well after noon in the Central time zone for Utee and I.

what in the wide wide world of sports are you waiting for?
End of the work day then Happy Hour
Suburbia:Where they tear out the trees & then name streets after them.

Anonymous Coward

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Re: Weather, Climate, and Environment
« Reply #1787 on: August 21, 2019, 03:39:18 PM »
I don't know whether this counts as this thread's kind of "environment" but whatever 🙃.

Prairie dog bubonic plague is in the news again. These pdogs in Colorado been a reservoir for it for years. And now local parks and concerts are closing. People like to get worked up about stuff like this (and Ebola and-and...), but it's worth reminding that the risks are low and that what is happening is nothing new. Bubonic plague has had a measurable incidence in the U.S. for years -- something like 7-10 annual cases. And unlike the 1300s in Europe, antibiotics have since been discovered and industrialized. We might have some reason to pay more attention because this part of Colorado is becoming more desertified, meaning that dry air is casting sediment farther. I suppose that ups the risk of the bubonic becoming pneumonic (a more severe variety of plague), but streptomycin, doxycycline, and cipro will defeat insufflated Yersinia pestis just as well as Yersinia that accesses the body in other ways. (...) Unless of course it become antibiotic resistant. Though that's more of a problem for the future than for now😬.

betarhoalphadelta

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Re: Weather, Climate, and Environment
« Reply #1788 on: August 21, 2019, 07:06:26 PM »
H2 is literally extracted from oil. It's beholden to carbon. Relative to EVs, it's an inferior technology for our vehicles' futures on many grounds:


  • beholden to carbon
  • makes cars into "safer" mini-Hindenburgs
  • still requires refueling at stations ad infinitum; I suspect that will eventually feel archaic compared to refueling at home while asleep


When the H2 is extracted from oil, does it release CO2 into the atmosphere? Or is the carbon kept in some non-burned, non-emitting form?

Never mind, the story says it outright:



Quote
Grant Strem, CEO of Proton Technologies which is commercializing the process says "This technique can draw up huge quantities of hydrogen while leaving the carbon in the ground. When working at production level, we anticipate we will be able to use the existing infrastructure and distribution chains to produce H2 for between 10 and 50 cents per kilo. This means it potentially costs a fraction of gasoline for equivalent output". This compares with current H2 production costs of around $2/kilo. Around 5% of the H2 produced then powers the oxygen production plant, so the system more than pays for itself.



Now, if this is true, it produces hydrogen in a way that doesn't generate a carbon footprint.

So tarring it with the "beholden to carbon" brush is just a pejorative. 

Remember, batteries don't just materialize out of thin air, . What's worse? Pulling H2 from oilfields without generating new CO2, or mining lithium? I don't know, but you can't just dismiss this as "beholden to carbon"...

Cincydawg

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Re: Weather, Climate, and Environment
« Reply #1789 on: August 21, 2019, 07:54:47 PM »
I looked for their patents, or applications, found squat on this technique.  I know how to find patents, or used to anyway.

I'm saying it's interesting but doesn't make sense, to me, so I await something more substantive.  And credible.

Anonymous Coward

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Re: Weather, Climate, and Environment
« Reply #1790 on: August 21, 2019, 10:46:04 PM »
Now, if this is true, it produces hydrogen in a way that doesn't generate a carbon footprint.

So tarring it with the "beholden to carbon" brush is just a pejorative.

Remember, batteries don't just materialize out of thin air, . What's worse? Pulling H2 from oilfields without generating new CO2, or mining lithium? I don't know, but you can't just dismiss this as "beholden to carbon"...
If true, you're right, it may be possible for H2 to become unbeholden to carbon. For now, let me reword to say that classic techniques for producing H2 have always been beholden to carbon. It's not yet a pejorative mischaracterization to say it's always been that way. I did gloss over the possibility of this changing, however. That feels like a comfortable bet, but you are right that it changing is probably not strictly impossible.

As for the mining, the same applies here as it applies to computer chips and even aluminum ion antiperspirants, it's all terrible for the environment. We should be careful here, too, however. This kind of mining is a different kind of destructive. It's primarily destructive to waterways and not the atmosphere/climate story. And like you I have no idea how to compare them. Meanwhile, toxic mining also seems necessary for perhaps all highway-safe automobiles (EVs, H2Vs, internal combustives), though I'm also not prepared to speak on the varying extents of toxic mining necessary for each and would not be surprised if you found that data and could support the idea that EVs are meaningfully worse. Our conversation needs that info, too.

betarhoalphadelta

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Re: Weather, Climate, and Environment
« Reply #1791 on: August 22, 2019, 01:03:01 PM »
If true, you're right, it may be possible for H2 to become unbeholden to carbon. For now, let me reword to say that classic techniques for producing H2 have always been beholden to carbon. It's not yet a pejorative mischaracterization to say it's always been that way. I did gloss over the possibility of this changing, however. That feels like a comfortable bet, but you are right that it changing is probably not strictly impossible.

As for the mining, the same applies here as it applies to computer chips and even aluminum ion antiperspirants, it's all terrible for the environment. We should be careful here, too, however. This kind of mining is a different kind of destructive. It's primarily destructive to waterways and not the atmosphere/climate story. And like you I have no idea how to compare them. Meanwhile, toxic mining also seems necessary for perhaps all highway-safe automobiles (EVs, H2Vs, internal combustives), though I'm also not prepared to speak on the varying extents of toxic mining necessary for each and would not be surprised if you found that data and could support the idea that EVs are meaningfully worse. Our conversation needs that info, too.
Agreed.

Bear in mind that I have no particular dog in this fight. I'm not sure that I'm fully onboard that the effects of CO2 are anywhere near as dire as some people predict, but I am in full agreement that CO2 is a greenhouse gas and that we should be trying to find alternative solutions to burning hydrocarbons. Especially because even beyond CO2, there are other pollutants. 

But as I've said before, to some extent you need to come at these things from a cost-benefit analysis, rather than picking the technology you want to win and assuming it will just scale. I've said before that I'm in data storage, and although there are huge predictions that HDDs will go the way of the dodo to be replaced by SSD, they don't factor in the capital intensiveness of the NAND industry and that it's only capable of economically producing a small portion of the world's total bit storage capability. It doesn't even matter that it's superior in performance--you simply cannot economically produce nearly enough bits to replace it wholesale. And as the world's bit demand goes up exponentially, NAND flash would have to grow at a much faster exponential to overtake HDD entirely, and I don't see that happening for decades. 

I personally worry that battery EVs are similar. They can be far superior in performance, and in pollution [as we improve our electricity generation]. But if the world's ability to economically mine lithium, or cobalt, or other metals used in the batteries doesn't come close to the world's annual automotive demand, it doesn't matter one bit if they're "better". You can't build and sell something if you don't have raw materials. Now, maybe that worry is unfounded. Maybe we can easily mine more than enough, and improve battery recycling to re-use what's already been mined, etc. I don't know because it's not my field of expertise, unlike data storage. 

The advantage of H2 is that hydrogen is plentiful. The disadvantage [as you point out] is that it's not plentiful in H2 form, so to get it we must separate it from another source, which can be difficult. Oh, and that whole "exploding" thing. But if we can find a way to economically extract hydrogen in a non-polluting way, that doesn't increase carbon footprint, and we can figure out how to do it without causing explosions, it may tip the cost-benefit scale from battery EVs to hydrogen fuel cell EVs. But again, that is also not my field of expertise, and I'm not going to say I know which one is going to win as I don't have the requisite knowledge. Hence why I'm postulating, not declaring.

 

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