New Holland unveils its hydrogen NH2 tractor

[Christophe]

1) Well yes Remundo, the return is not everything: what counts is above all ... the financial return and on this point the PV is crushed like shit!

I was simply supplementing Maloche's assertion that biomass was the "best": it depends on the criteria we use ...

2) Of course we can ... it is even more advisable to cultivate in a basin ("sterile") since the sea is a source of so many parasites compared to the species we want!

Most oilseed algae are ... freshwater algae!

Look at this: https://www.econologie.com/les-biocarbur ... -3566.html

[Remundo]

So the farmer can build a basin that will give him his oil by collecting the algae ... With a glass cover, we must be able to accelerate growth anywhere and avoid freezing.

[Christophe]

Of course it could ... and if the system does not collapse and we start early enough to anticipate: in 100 or 200 years farmers will also be energy suppliers ... other than food energy of course!

[Remundo]

very good, your document, Christophe.

It is necessary to bring CO2: is the CO2 in the air sufficient, or should we burn the biomass and gently instill the fumes in the environment?

[Christophe]

No need to boost them with CO2 if you want to hope for something interesting, try ceci and start by reading this: https://www.econologie.com/biocarburant- ... -3576.html

[Remundo]

Okay ... something super profitable can happen ...

Farmers have a huge amount of dry biomass to develop (wood, branches, hay waste, straw, dried dung ...).

Usually they leave it there or spread it as natural fertilizer.

They could take part of it. With Stirling cogeneration, they heat themselves and their electricity (even more than their needs ...).

The hot, CO2-laden fumes go to the algae culture medium (they can be "bubbled" in the basin).

Photosynthesis does the rest and fuel oil is recovered from the tractor.

Isn't it beautiful?

[Christophe]

Uh yes but you complicate a lot ...

The best is still to complete everything: make electricity with diesel groups running on biodiesel ... from micro algae ... and therefore the CO2 would be captured and reinjected for their growth ... And hop : an indirect solar power plant.

Only downside: the maximum efficiency compared to solar energy would be 5% * efficiency of diesel groups ...

In short it will be far, very far, from concentrated solar power plants ...

The only (big) advantage: you can largely buffer and respond to variable demand ...

[Remundo]

it depends on what you want to do ... for a farmer, electricity production is not a priority. However, snoring the tractor is important. To enhance the production of biomass of hundreds of hectares too.

The reasoning that I set out is also valid with a Diesel generator set. On this point, Diesel cogeneration is much more operational than Stirling cogeneration.

[loop]

Hello

I thought that on this subject we were going to talk about the multi-fuel cell and its efficiency greater than 50%

I really feel attached to the heat engines, its noise, its vibrations, its pollution and its poor performance.
As we often say, drive away the natural ... it gallops

Perhaps we should consider Pantonizing a fuel cell so that you see an interest in it?

Joking aside, does anyone know what prevents using a conventional fuel in a heat pump?

A+

[Christophe]

Well there is not so much waste as that which is not valued in agriculture: you have to feed the soil you know ... so let's leave the straw where it is!

Otherwise here is a diagram which illustrates what I explained above but with a different reasoning:



This diagram is part of a good article by Elec on the subject to read here