The renewable energy hydrogen car: the future?

[chatelot16]

making hydrogen with methane (natural gas) is stupid! methane can be stored compressed, less difficult than hydrogen ... the direct use of methane in an internal combustion engine is no worse than hydrogen in an overly expensive fuel cell

the use of hydrogen in an internal combustion engine is useless since it also works easily with methane

[I Citro]

Steam reforming production
The steam reforming of methane (CH4) is the most widely used hydrogen production technique, but it emits a lot of CO2. This technique, also known as SMR (Steam Methane Reforming), the simplest, consists in “breaking” the methane molecule in the presence of water vapor. It is of no great energy interest because CH4 is already a fuel, and is only intended to supply industry. The yield is good (70%), but the chemical reaction releases about 10 kg of CO2 per kg of H2 produced. R&D projects seek to produce carbon-free hydrogen by SMR associated with CO2 capture techniques (CCS for Carbon Capture and Sequestration).
A little further in the same study of 2014 we can read:

Using H2 produced by SMR is neither economically nor environmentally justifiable and, from the point of view of safety, a simple calculation shows that it is more advantageous to use the gas directly in a heat engine.

The H2 produced by SMR from methane (natural gas) is 20 times cheaper in Europe (50 times in the USA because of the more affordable price of gas) than its production by electrolysis ...

[I Citro]

the use of hydrogen in an internal combustion engine is useless since it also works easily with methane

It’s even worse than that.
BMW built hydrogen prototypes on these high-end models (series 7) and stopped the program because exhaust released more nitrogen oxides than conventional engines, Nox that we call very toxic gases (stroke, and many cardiovascular disorders, in particular) ...

The vehicle had a 170 liter hydrogen tank carrying 8kg of H2 for a hydrogen autonomy of 200km or 4kg of hydrogen per 100km ... A conventional gasoline tank of 74 liters extended the autonomy of 500km.

The Toyota Mirai, certainly less powerful consumes 1kg of hydrogen per 100km

[Remundo]

BMW used a COMBUSTION of hydrogen, which makes a very hot flame, and that is why NOx are favored.

It is "normal" that the Miraï consumes less hydrogen, because it uses a fuel cell with an efficiency of around 50/60%.

Whereas a combustion engine is more like 20% on average.

I am very skeptical about hydrogen, whether it is in combustion, and even in heat pumps. The H2 production / storage / transfer process is very energy-consuming and technically delicate.

[moinsdewatt]

Toyota: the Mirai with hydrogen arrives in Europe

August 12, 2015

Just 15 years after the arrival of the first Prius hybrid in Europe, the Toyota Mirai with hydrogen is now arriving on our continent.



The first five copies of the Mirai arrived in Europe by boat. They landed in the ports of Bristol (in Great Britain) and Zeebrugge (on the Belgian coast), respectively on August 8 and 10.

The Mirai will be marketed in Europe in September, first in Great Britain, Denmark and Germany, countries which, unlike Belgium, have already started to develop their hydrogen distribution network.

The price of the Mirai will be € 66.000 excluding taxes.

http://www.lesoir.be/960225/article/vic ... -en-europe

[moinsdewatt]

......
I think I identified the buffer battery, placed behind the Bench. The manufacturer boasts of having a "reactive" fuel cell that does not require a large electric battery ...
Given the volume of the container, I estimate the buffer battery at least 9kWh of capacity .......

I am interested if you find something on the NET.

I found that yes there is a buffer battery, but no way to find the capacity.

[rudy]

Hello I find it difficult to follow on the ways of making hydrogen, would it not be more judicious to do with an HHO generator which is supplied with batteries recharged with free electricity for example, seek to build a system that would produce free electricity, and also make HHO to supply homes with heating and electricity all for free for example?
Cordially .

Wisdom is a must

[Christophe]

HHO does not generate enough hydrogen at all to hope for anything other than a (slight) improvement in the combustion of "classic" fuel ...

On the other hand, we can make solar hydrogen by thermolysis as Jean Luc Perrier tried to do ... a long time ago: solar-thermal / solar-jean-luc-Perrier production-and-hydrogen-solar-t1520.html

There it worked! And his accidental death (this was confirmed by his daughter who passed over the forums...) still arranged more than one ...

[rudy]

I have trouble looking because I have seen HHO stoves, I saw a heating stove transforming well to work with HHO, I also saw big explosions, on the other hand I saw catastrophic dramas with the 'hydrogen there must be a way to make it work, you have to try to make an engine work just with HHO, impossible, it's not French.

If we wait for the others to do it is in the CC

Wisdom is in order.

[rudy]

Or ? electric cars and free electricity, I think of this solution there are fewer explosions.


Wisdom is in order.