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Could anyone point me to a read or formula for trying to estimate kWh for a run? I've got a 26 gallon still and a 4" ProCap column and will be heating with 2x 4500W elements. Going from 60°F to boil hopefully in an hour and then taking it off at a medium pace with SSRs.
I'm looking at trying to get a COGS - electricity line item that roughly correlates to the size of the charge, so if I wanted, could estimate up-sizing to a 100 gallon still.
Overestimates are fine as long as they are not way off. If it comes out cheaper to run it - all the better!
This was my first stab by using water, as I could find the coefficient for water heating by 1 degree easily from hyrdonic heating websites:
0.0024444 Kwh to raise 1 gallon of water 1°F 0.293328 kwh to raise 120 degrees 35.19936 120 gallons $0.30 $ / kwh (guess) $33.00 electricity cost for initial heat up (SSR for maintaining temp so I assume there is more to this) $66.00 double for good measure => COGS electricity / batch
Am I totally off?