RE: Eskom flagship battery4 Nov 2019 16:11
dubmaskullanga - I'd guess a relative density of 1.3 so 26,000 litres would be around 34 Tonnes. This sounds quite high for a 20-foot container so I'd be inclined to go with only 20,000 litres and a 26 Tonne weight per 20 foot container.
Having said that all this stuff (V electrolyte, Fe-Zinc electrolyte) is shipped around in dedicated c. 1M3 plastic containers that are Dangerous Goods certified in some way or other. I don't know if these can be stacked inside of a shipping container, but if not then I would guess that you can only get about 12 of these in a shipping container so that is only about 16 tonnes of weight.
If you work on the basis of 5000 tonnes of V per GWH and the V is only 1/8th of the overall electrolyte weight then you need 40,000 tonnes of electrolyte per GWh - one container gets you 1/2500th of this - so you would need perhaps 2,500 containers to ship 1 GWh of electrolyte abroad. Cripes !