This is awesome! Yes it is the same idea of the son of fermentation chamber, but a portable take on it. I totally want to make one of these! Right now I'm fermenting in sanke kegs, which should conduct the cooling fairly well. I have plans to make a full fledged jumbo massive gargantuan chamber with all the fixins, but won't have time until this summer. This could be the answer until then! Could be useful in tasks outside of brewing as well. Thanks for sharing!