Hydrogen infrastructure

   / Hydrogen infrastructure #171  
Or think about listening to the people who know rather than a random naysayer on the internet.

Interesting site. Have you read any of the other articles? What do you think about them?
 
   / Hydrogen infrastructure #172  
I just choke on the amount of infrastructure required to move an element that diffuses through pretty much anything, burns practically invisibly, and takes enormous amounts of energy to densify. Fuel cells not withstanding, there really aren't great, practical ways to transport sufficient energy to move vehicles typical distances. I have seen hydrogen powered cars and buses, and while water vapor exhaust is different, at the end of the day, it is about enabling transport from A to B, and hydrogen just falls short in so many dimensions. But don't take my word for it.

Hydrogen for industrial uses, sure. Direct reduction of ores to elements, e.g. iron ore to steel, is likely to be a great use. It is however a very challenging chemical to work with, at least in my experience.

All the best,

Peter
 
   / Hydrogen infrastructure #173  
I didn't read this entire thread so I don't know if this has been brought up but power plants have been using compressed hydrogen for years as a cooling gas for the generators. Obviously much less is used in this application than if it were being used for fuel but still we know how to handle and store it safely.
 
   / Hydrogen infrastructure
  • Thread Starter
#174  
Not following this thread but here is why Hydrogen is a pipe dream.

No step-change in tech is w/o engineering challenges. What is expensive in one era can become common not that much later in time.....living more than 2 decades, most people have experienced that process.

Many arguments (both sides, any issue) often exhibit Confirmation Bias........ but I'd put today's Net Zero debates towards the pinnacle of that list. Watched another vid recently, arguing for cramming more people in to cities, and expanding them...... conveniently ignores the Net Zero calculations involved with paving over adjacent farmland, and transporting more Ag products even further, to fuel these super-cities......

implementation/infrastructure challenges....... here or elsewhere, somebody cited a hydrogen filling station shut down because of problems/costs....... chuckling when I read that. Anybody who has worked with traditional infrastructure (ie. tech that is supposedly well understood) knows how typically under-funded maintenance is..... the people deciding budgets are typically bureaucrats and bean-counters, so it's no wonder a novel technology is exceeding "budgets".

I know of a Canadian city where the orders for EV buses have been halted. Not just due to issues with the buses, but it became inconveniently obvious that the way they were having to charge the existing buses was to have multiple very large (older emissions than existing diesel buses) diesel generators onsite, screaming away to rapidly charge the trial-fleet.

Major upgrades to the grid are $$$$$.....Who Knew ? :cool: Most jurisdictions are way past the "Build It, We've got an Economy to Support" mentality of my childhood. So, in a lot of cases, all levels are waiting around to get somebody else to pay for grid upgrades......

Just a few examples....... turns out, if you actually still want to get Things Done (ie. Work), then hydrocarbons are not easily, and definitely not cheaply, replaced. I'm part way through it, if you can, get a hold of Fossil Future that came out this year, by Alex Epstein, I can recommend it.

While fuel-cells get attention, what is less discussed is burning Hydrogen directly. Burn it with air, and pretty much all you have to mitigate is NOx, which has been well understood for most of my life. Burn it with pure oxygen, and all you get is H20 out....... that I'd like to see in a water cracking pilot, fixed industrial use. Cake, Eat it, Get more Cake......

Hydrogen internal combustion engine vehicle - Wikipedia

I came across a great line from Peter Thiel....... paraphrasing slightly "Being extremely optimistic or extremely pessimistic (Things Will Always/Never Work Out) amounts to the Same Thing...... an Excuse to Do Nothing".

There won't be any one totally perfect replacement for hydrocarbons..... we just need to get on with implementing some improved alternatives, that suit their intended applications......

Rgds, D.
 
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   / Hydrogen infrastructure
  • Thread Starter
#175  
I won't post it directly, but some macro thoughts from Thiel can be found if you search youtube for the recent interview :

Peter Thiel, Leader of the Rebel Alliance​


When someone who is perceived as (and is) very successful is not afraid to publicly say "I don't know", < that gets my attention.

Rgds, D.
 
   / Hydrogen infrastructure #176  
Interesting site. Have you read any of the other articles? What do you think about them?
Read the author's biography. He is a professional writer. No technical training. Doesn't provide any specifics only generally claims batteries do poorly in cold and "You won’t have to spend extra money or effort to operate a hydrogen fuel cells." This is just another example of the poor state of modern journalism, "copy/paste things together than seem to support your desired statement."

Says hydrogen fuel cells make heat. Doesn't seem to think lithium cells get warm in use. Just how difficult is an electric resistance heater?

Completely ignores how compressed gas gets very cold in an expansion valve. How this is the fundamental basis of a modern heat pump air conditioner which operates on much lower pressures than hydrogen is stored. Hydrogen systems require heaters just like battery systems. But where are you going to get the heat without gasoline, diesel, or a large battery?

CNG and propane systems also require heaters on the expansion valve but most of those are dual fuel and can bring the ICE up to temperature before changeover, then use the ICE cooling system to heat the expansion valve.
 
   / Hydrogen infrastructure #178  
Read the author's biography. He is a professional writer. No technical training. Doesn't provide any specifics only generally claims batteries do poorly in cold and "You won’t have to spend extra money or effort to operate a hydrogen fuel cells." This is just another example of the poor state of modern journalism, "copy/paste things together than seem to support your desired statement."

Says hydrogen fuel cells make heat. Doesn't seem to think lithium cells get warm in use. Just how difficult is an electric resistance heater?

Completely ignores how compressed gas gets very cold in an expansion valve. How this is the fundamental basis of a modern heat pump air conditioner which operates on much lower pressures than hydrogen is stored. Hydrogen systems require heaters just like battery systems. But where are you going to get the heat without gasoline, diesel, or a large battery?

CNG and propane systems also require heaters on the expansion valve but most of those are dual fuel and can bring the ICE up to temperature before changeover, then use the ICE cooling system to heat the expansion valve.
That's pretty much what i got out of the site too. It seemed a poorer attempt at cashing in on "alternative" energy then most sites.
 
   / Hydrogen infrastructure #179  
I see Musk has supposedly developed a battery that uses NO Lithium. That is interesting.
Those sneaky Capitalists will try anything!

Have you forgotten NiCAD and NiMH already? Oh and lead-acid?
 
   / Hydrogen infrastructure #180  
I see Musk has supposedly developed a battery that uses NO Lithium. That is interesting.
I've read a few things about a Vanadium Redox battery. I'm not sure if that's what Elon has been funding/supporting. Supposedly it might be the ticket for large, stored energy facilities to compliment solar/wind.
 

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