agreed. by about 25%. if you don’t count heating the water.
but you put that 8still gal in a 50 gal drum & heat up 35gal of the water to 78C, that’s 9kWhrs on the water alone.
I would argue that a 5500W water heater element is appropriate…and would suggest less than 20gal water.
If you’d care to correct my math, by all means…
also depends on how much of that solvent you really want back, it does get harder to pull towards the end.