Prove it's wrong.

I don't have to prove anything - I just started laughing with one of his articles claiming that recharging a battery is more efficient than a chemical reaction. Ha!

 

https://www.bbc.com/news/business-64270157

Looking ahead, Mr Opedal said "we need to treat energy as something that is not abundant".
"I think we have had a lot of cheaper energy in the past and we probably wasted some of it, so we need to make sure we're making the right investments now [and] everyone [should] use as little energy as possible."

The firm also has investments in off-shore wind power. It recently announced plans with Germany's RWE to develop hydrogen-ready power plants.
The plants will run on gas initially but will eventually be able to transfer to using hydrogen generated by renewable energy.

The push for a hydrogen fuels and energy storage will only make things worse at the consumer level. We need to move away from fossil and fake fossil fuels like hydrogen to a close to 100% (gas stoves exempted ) electrical energy based infrastructure.

 

View attachment 285362
https://www.bbc.com/news/business-64270157

The whole point of hydrogen power is storing wind and solar power to use it when, where and at a rate appropriate to the end application.

Anyone telling me that there is no future in hydrogen needs to also present a more efficient, cheaper and convenient form of energy storage.

Batteries are a joke as of now, I took a ride from San Francisco to LA in a Tesla. My advice, don't do it. You'll increase the time it takes to get there by 50% - assuming start with a full charge. Living in an apartment building without charging stations makes things much less convenient.

Tesla and Hertz recently announced that Teslas will be available at Hertz locations but it turns out to be profitable or even feasible to charge a rental car and flip (return + rent) a car in the same day. Now image trying to do that with dozens or hundreds of cars per day from a single location. I discussed this challenge with the infrastructure manager of most US-based Airport rental centers (subleased by rental companies). He has concluded there is not enough on-site parking to do this for the time required to change a car. Renters would be very angry to get an EV that is nearly empty. With hydrogen, it could be possible.

 

Anyone need a tank full?

It's for burning with O2 to make pure water to generate silicon oxides on wafers.

 

Anyone need a tank full?
View attachment 285478
It's for burning with O2 to make pure water to generate silicon oxides on wafers.

What's in the Airgas Tube Trailer?

 

RE:""there is always a chance that hydrogen can be created cheaply enough""
Yet for the moment, hydrogen is made out of serious quantities of russian gas, using enormous quantities of electricity, made out of coal. Because all the HES etc energy is already uptaken with older consumers. Rarely exist any other fuel making tho shamfully bold and dirty environmental footpath as "green" hydrogen.

 

This is interesting
https://fuelcellsworks.com/news/uns...nvert-a-diesel-engine-into-a-hydrogen-hybrid/
so with the addition of a little diesel fuel, a conventional engine can burn hydrogen at an efficiency approaching that of a fuel cell, and it doesn’t need to be very pure hydrogen either.

All that is needEd now is a way of storing a decent amount of hydrogen using readily available compressors and off-grid premises would be able to make enough hydrogen in the summer to run their generators in the winter (with the addition of a little bit of old chip-frying oil)

 

Wow, that's not shocking news to me.

 

Wow, that's not shocking news to me.

The guys tells people to give him real numbers -- and then he just makes numbers up. First he claims there's two billion electric charging stations in the U.S. and then revises it to 20 billion stations. A quick check indicates that the number of electric vehicle charging outlets (not stations, but outlets) is currently under 200,000.

He talks over and over about how expensive hydrogen is (which I'm not disputing), but then doesn't provide any numbers. At one point he says that it costs twice as much to fill up a hydrogen car than a gasoline car, but that's meaningless unless you know how far each of those vehicles can go on a full tank.

Personally, I have no sympathy for people that bought these cars. They wanted to be "early adopters", which almost always means that there are huge costs and huge risks involved.

 

The guys tells people to give him real numbers -- and then he just makes numbers up. First he claims there's two billion electric charging stations in the U.S. and then revises it to 20 billion stations. A quick check indicates that the number of electric vehicle charging outlets (not stations, but outlets) is currently under 200,000.

He talks over and over about how expensive hydrogen is (which I'm not disputing), but then doesn't provide any numbers. At one point he says that it costs twice as much to fill up a hydrogen car than a gasoline car, but that's meaningless unless you know how far each of those vehicles can go on a full tank.

Personally, I have no sympathy for people that bought these cars. They wanted to be "early adopters", which almost always means that there are huge costs and huge risks involved.

He's not the guy for hard facts (IMO he's talking about regular 110AC outlets as possible charging sources if you have your own 110AC level 1 travel charger in the EV), that's why a realistic example of public charging at a H2 station was also linked.

From a few years ago, nothing has changed for the better.
https://www.latimes.com/politics/story/2021-08-10/hydrogen-highway-or-highway-to-nowhere
Is California’s ‘Hydrogen Highway’ a road to nowhere?

Aug. 10, 2021 3 AM PT

Soon after Maribel Munoz joined the trailblazing ranks of American owners of hydrogen cars — a group that exists only in California — she began to fear that the low price of the taxpayer-subsidized Toyota Mirai she purchased came with a tremendous cost.
“You can’t have a job and own this car,” said the 49-year-old clothing designer from Azusa. “Finding fuel for it becomes your job. It is constant anxiety. I told the guy at Toyota, ‘If I have a stroke, it’s on you.’”
Munoz found herself stranded with an empty tank on the highway and stressed out by the repeated fuel shortages Mirai drivers call “hydropocalypses.” She struggled not to scream at her phone after driving miles to stations that a hydrogen fueling app said were working just fine, only to find them out of order.

Less adopted and more like the red-headed step-child.

Yet nearly two decades into the hydrogen experiment, it remains a uniquely expensive gambit. The state has spent $125 million to make its struggling network of 50 public hydrogen fueling stations operational. That network is still so shaky — with stations frequently malfunctioning or out of fuel — that Toyota provides free towing and car rental service to drivers who purchase a Mirai, as getting stranded is a constant risk.

 

https://techcrunch.com/2024/11/05/o...rogen-projects-chilling-the-nascent-industry/
Oil giant BP is killing 18 hydrogen projects, chilling the nascent industry

 

The oil companies push hydrogen, because you need their gas stations to refuel. Who has hydrogen on tap at home ?

 

I am not talking overunity, but there is always a chance that hydrogen can be created cheaply enough to be used as a fuel, once storage and safety concerns are addressed.

Nanosheet catalyst discovered to sustainably split hydrogen from water

I thought about something similar some time ago and I'm still thinking about it.
I was thinking about the PH electrode of the PH meter

It has a membrane with holes, pores so small that only hydrogen being small can pass through.
We call it the ion-selective membrane.
Isn't this a separation of hydrogen from liquids?

Then I thought of using a selective membrane to absorb hydrogen from the air./
But a colleague discouraged me because the air has so little hydrogen, below 1% that it would be a waste of time.

Then I wanted to make a very small power generator using cooking oil.
The first idea is to burn the oil and use a stirling engine.
But it would be too noisy.

The second idea is to use catalytic reforming to obtain hydrogen from food oil, but I think it is not possible at Diy level.

Another idea is to use a fuel cell for biodiesel.
I asked the Artificial Intelligence, Copilot.

It answered that the efficiency of a biodiesel fuel cell is approximately 40%
I tell it, this is also the efficiency of a Diesel engine.
It Answers: correct!

I ask where I can buy a biodiesel fuel cell ?
I didn't find out

 

Isn't this a separation of hydrogen from liquids?

Yes, but gravity does it at least as well!

 

It answered that the efficiency of a biodiesel fuel cell is approximately 40%
I tell it, this is also the efficiency of a Diesel engine.
It Answers: correct!

If so, just buy a diesel engine.
If you recover the heat, you can easily manage 75% efficiency.

 

The guys tells people to give him real numbers -- and then he just makes numbers up. First he claims there's two billion electric charging stations in the U.S. and then revises it to 20 billion stations. A quick check indicates that the number of electric vehicle charging outlets (not stations, but outlets) is currently under 200,000.

He talks over and over about how expensive hydrogen is (which I'm not disputing), but then doesn't provide any numbers. At one point he says that it costs twice as much to fill up a hydrogen car than a gasoline car, but that's meaningless unless you know how far each of those vehicles can go on a full tank.

Personally, I have no sympathy for people that bought these cars. They wanted to be "early adopters", which almost always means that there are huge costs and huge risks involved.

FYI.
Just back from 4 weeks in calfornia.
Driving from fresco to San diago .
I'm shocked at how few ev charge stations you guys have compared to Europe.
Just wondering why is the US so far behind the switch ?
Are you praying that the gas companies are going to come up with a solution ?

 

FYI.
Just back from 4 weeks in calfornia.
Driving from fresco to San diago .
I'm shocked at how few ev charge stations you guys have compared to Europe.
Just wondering why is the US so far behind the switch ?
Are you praying that the gas companies are going to come up with a solution ?

https://driveelectric.gov/stations

 

If so, just buy a diesel engine.
If you recover the heat, you can easily manage 75% efficiency.

A good Diesel engine is 45% efficient compared to a Otto engine which is 35%
So 55% is lost heat.
In order to obtain 75% efficiency, almost half of the lost heat must be transformed into useful energy.

This probably exceeds the Carnot efficiency.

The thermal engine of the car loses about a quarter of its heat through the radiator in front of the engine and two quarters through the exhaust pipe.

On the exhaust pipe, energy is lost through the temperature and pressure of the gas.

How to recover it?

If we use a thermoelectric element, it has efficiency... 5%
Only if we used a Stirling engine could we reach 50% efficiency, but these are just stories, what Stirling engines I have seen have 4% efficiency.

The steam engines created by Newcomen and James Watt had an efficiency of 1... 4%. Please correct me if I'm wrong.

 

In order to obtain 75% efficiency, almost half of the lost heat must be transformed into useful energy

A CHP system can do that. Water at 70°C is useful energy. A lot of electricity is used to heat water!

 

Just a thought. . . Has anyone actually seen a useful Stirling engine for sale? Say, capable of driving a 12kW alternator.