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Topic: vac cooling (2 msgs / 137 lines)
1) From: sbc account
hello all,
i started roasting less than a month ago after a ton of research at SM, CG,
and the list archives.  i decided on the z&d after all things considered...
and then had to get the technivorm shortly thereafter, of course, to check
my work.
many thanks to all of you for your advice, whether you knew i was listening
or not :)
this next part may be old-hat for you veterans, but i'm having a blast on
this side of the learning curve, so please bear with me.
based on tom's recommendations, i keep a small shop vac next to the roaster
to handle the chaff issues... very affective.  since everyone agrees that
the z&d's five minute cool down cycle is insufficient, i began looking for
other means.  i decided to try drawing air through the beans using the shop
vac and a two liter soda bottle cut into a funnel with a old utopia filter
in the neck.  this worked well once... the plastic was no match for 300+
degree beans!
then i found a stainless funnel with a strainer at my local mega-discount
store.  i cut the bottom out of one of those small disposable storage
containers and use it to increase capacity.  i used this method several
times and found that i could drop the beans to room temp in a minute or
less.  this was with the funnel in the upright position.  then, out of
curiosity, i decided to flip the funnel over using my hand to direct the
inflow of air to agitate the beans.  fun!  i think this cools the beans even
faster, but what's more important is it's neat to watch!  so what i've ended
up with is a very quick and almost chaffless cooling operation.
anyway... if you want to check out a couple of videos and some pictures, you
can find them at the link below.http://gba-inc.com/survey/coffeeroasting/vacuumcooling.htmlone word of caution: the hot air can soften the vacuum hose which in turn
can collapse if the pressure gets too great.  mine is now four inches
shorter ;)
john
tinkering in the garage with my new toys
pearland, tx

2) From: Philip Keleshian
Hi John,
It looks good.
It's good to see a Z&D user post something which shows a bit "out of the =
box" thinking.
Phil


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