i started out all grain recently, and to go along with that, built myself a nice simple immersion chiller out of 20' 3/8"D copper tubing. it worked pretty well i thought, but had a tough time getting the temps down below 100F...
to remedy this, i went out and bought 50' of 3/8"D copper tubing, and made another larger chiller... this chiller i now use as the chiller in the brew kettle, and have the one i made previously as a pre-chiller which is in my sink immersed in ice water. the performance on the last two brews, however, was seemingly not much different than when i just used the immersion chiller by itself. once it got to about 100F, it took forever to just get down to about 79... i'm talking about 1 hour, which i don't find acceptable at all.
i was hoping to pitch at about 70F or so, but it just doesn't seem like it will be possible. any ideas as to what i'm doing wrong here?
to remedy this, i went out and bought 50' of 3/8"D copper tubing, and made another larger chiller... this chiller i now use as the chiller in the brew kettle, and have the one i made previously as a pre-chiller which is in my sink immersed in ice water. the performance on the last two brews, however, was seemingly not much different than when i just used the immersion chiller by itself. once it got to about 100F, it took forever to just get down to about 79... i'm talking about 1 hour, which i don't find acceptable at all.
i was hoping to pitch at about 70F or so, but it just doesn't seem like it will be possible. any ideas as to what i'm doing wrong here?