The e-bio: fuel cell running on bioethanol

[izentrop]

The important thing is to know the performance of these various devices. The storage cycle in battery or step and use in electric motor is much less wasteful than all these cycles of conversion into liquid fuels / internal combustion engine.

The future will rather go through batteries using abundant components likesodium-ion batteries and carbon super-capacitors, for example.

I just saw that my region is doing it, I will have to take a look http://www.energie-rs2e.com/fr/news/rs2 ... -dici-2016

[Obamot]

The important thing is to know the performance of these various devices. The storage cycle in battery or step and use in electric motor is much less wasteful than all these cycles of conversion into liquid fuels / internal combustion engine.

I apologize for coming back to this, but:
- do you know the performance of power plants such as Chernobyl or Fukushima? We don't even dare draw up the invoice!
- even the efficiency of such plants "without history"is questionable.
- these plants are no longer profitable and will have to be replaced, here we are only talking about storage, this is a sine qua non condition: BUT it would theoretically only need to be profitable at 10% of total production EnR (equivalent to the load factor). We could therefore find perfectly acceptable 90% of losses as we accept them without flinching for nuclear at a factor of 50x (Jajab dixit)! In reality it will therefore be much, much, less in the renewable energy sector.
- uranium fuel costs him more, since it must be enriched thanks to coal-fired power plants! No need to enrich the hydrogen.
- then it is necessary to reduce to the real cost of the geological time that it took to constitute the deposits of fossil fuels (uranium included). From there, almost any storage solution would be "profitable" (that is not the question but we still choose the most promising ...)
- indeed since absolutely all these devices are only studied if they are of interest, therefore have the performance expected of them (thermodynamic solar with heat storage in different substrates included) insofar as they are eligible for this do, since it is also according to this logic that they are selected.
- We will come to this since anyway we must work in an efficient direction, the peak oil of crude oil extracted by simple pumping is already exceeded. Hurry up. And since the fossil constitutes a pollution which the precautionary principle urges us to limit.

The conversion of RE to hydrogen (in all useful forms) will take place, for at least the following reasons:
- the distribution network already exists without heavy investment costs.
- it is a flexible method (either in the form of gas, or converted directly into electricity). Nuclear does not have this flexibility.
- production units can be set up gradually, as the renewable energies develop.
- only 10% of the stored counterpart is necessary to meet the load factor, so there is no need for huge infrastructures, whereas if you want one more nuclear power plant, it's 5 billion as an entry ticket! (The exit ticket will be according to the vagaries, that's what is unbearable for future generations ...)
- we have to think in terms of the energy mix, in this context there are inevitably solutions that have less efficiency than others.

The future will rather go through batteries using abundant components likesodium-ion batteries and carbon super-capacitors, for example.

I just saw that my region is doing it, I will have to take a look http://www.energie-rs2e.com/fr/news/rs2 ... -dici-2016

Can't wait for tomorrow ... (which virtually started yesterday and will start again this evening ...)

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Sodium is fantastic, it can store heat between 200 ° C and 800 ° C which is the best system for storing energy. This is unbeatable in terms of yield, since it allows solar power to continue to be produced at night when the Sun is down or the sky is overcast, while waiting for its benefactor rays to reappear.

[Obamot]

PS: question of load factor, compared to the WWTP and all that is known, to store methane in the town gas distribution network and in gasometers, and which would make it possible to overcome the problem of discrepancy between "availability" of the current supplied by the renewable energies and "demand" and this during .... 2 months of electricity consumption, already with the existing gasometers but which can easily be multiplied by remaining close to the use sites which are at the same time the potential poles of production ET consumption [...] (I don't know if you realize?) here at 1m21s >>> it is the “elasticity” between supply and demand that renewable energies need to avoid any collapse of the electricity network. Above all, this solves a big dilemma: flexibility. This is the role that nuclear plays badly at present (for the problems we know) and which therefore finds its effective replacement: we can heat homes, fill up with vehicles and compensate for peaks in the consumption of the electricity network. while storing energy securely in one operation. What other solution makes it possible to do this on a large scale with existing equipment? And with light and adaptive investment costs?

So the yield ... ( )

[izentrop]

Advances towards the commercialization of the biopile which could compete with the fuel cell without requiring platinum

... the researchers managed for the first time to quantify the proportion of enzymes actually participating in the current, highlighting that the currents delivered by the biocatalyst are very close to the expected objectives for platinum. They also established a numerical model to determine the optimal geometry of the stack. These biopiles thus appear as an alternative to conventional fuel cells: biomass can be used both to supply the fuel (hydrogen) but also the catalyst (enzymes), by nature renewable. http://www.mediaterre.org/actu,20170831092430,9.html