I have almost completed this still, most of the material I got free (cost me $53 all up, $19 for the SS sink drain and $28 for 4' x 2" column, $6 for a reducer for the thermometer)......I put a 2400 watt 240 volt kettle element in it for getting to temp and I will add a smaller one (1200 - 1400) for the distilling. The boiler is 20 litre, column 2 inch.
I would like to try it just with the 2400 watt element
I think it will be to big, I tried running a 2.4 on my 1100mm column bokakob, it just ran too hot. I had to install a 1380 watt element.
It is most absurdly said, in popular language, of any man, that he is disguised in liquor; for, on the contrary, most men are disguised by sobriety. ~Thomas de Quincy, Confessions of an English Opium-Eater, 1856
2.4kW will most likely be overkill for this setup. If you had a valved reflux design with a mighty loosely packed column, then you might squeeze this amount of power through the pipes but I advise to go for the 1.3kW element for now.
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