Whole system concept for more security and efficiency

[jo.foe]

Hi, was observing this theme long time and also I've seen the problems.
I have made two sketches for a possible solution what prevent probmems of security and efficiency.
So the water filled capsuled system prevent too high wasting of energy by senseless level differences because the reservoirs can swim up and down. So you can in one case use level differences and in the other case you can prevent senseless level differences.
In small testing systems it plays not so a big role, but in bigger systems and it does and lead also to senseless pressure on the pipes.
Also prevent the setup any leakage of chemicals in this closed setup. On leakages on pumps or so, the chemicals flowing back in it's reservoir. Also the water does prevent leakages of the salt solution outside of the box.
Also electrical elements are secure because all can be installed above the chemicals ways.

This are only sketches, but eventually helpful?

[jo.foe]

In the low pressure case also you don't need a special pump for salt solutions.
Also it's easily possible do run any cells parallel with only one pump.

I don't know, what pressure the cell needs, so I made both cases.

[sepi]

I'm a total beginner so please don't judge. Don't the electolytes flow in two circuits (touching via the membrane), driven by two pumps? In your sketch I only see one such circuit.

[jo.foe]

Oh, ok, think I misunderstand the system the whole time ...
Sorry! 🫣
... was also wondering about the two pumps...
So put the thread in the waste... ... it is nonsense ...

[sepi]

As I said, don't trust me, but if you're a beginner in this topic just like me, you might have gotten it wrong.

[jo.foe]

Yes, seems I was thinking it wrong and have to read again.
Is it pumped everytime from and back into the same reservoir?

[kirk]

Hi @sepi and @jo.foe, apologies for the delayed response, I've been offline for a few days. Perhaps this might help: https://fbrc.dev/faq.html#what-is-a-flow-battery I've tried to write up a straightforward explanation but let me know if it's not clear or if it could benefit from adding something.

@jo.foe said in Whole system concept for more security and efficiency:

Is it pumped everytime from and back into the same reservoir?

The two pumps are (in normal operation) continuously circulating electrolyte from their respective reservoirs to the cell, where the electrolyte goes through either the positive or the negative flow path (manifold + flow frames), and then back to the reservoir.

[jo.foe]

Ah, in the FAQ ...
Yes, was thinking wrong from other and not so good sources.