Heat ratings

[JavaB]

Re: Heat ratings

Smokey beans - I understand your point, I was wondering if might just be more like a drum roast?
Dave

Dave,

drum roasters do have air flowing through them which carries off the chaff and the smoke.... so they would only have a relatively small amount of contact with any smoke - little absorption. Even when pan roasting the hot smoky air rises up and away from the beans.

A recycling fluid bed roaster would be bathing the beans with very smoky air for a significant portion of the roast.... and would, Im sure, impart that flavour to the beans.

But using gas as the heat source.... you shouldnt need to recycle the heated air.

[Sullo]

Re: Heat ratings

guys n gals,
been out in dexters lab again, whats the highest temp Id want in a drum roaster?
Frankenroaster got a lil hot @260 which meant a handful of lil indian beans got fryed....
Im still nutting out the air/chaff holes so that might sort itself out....

bloody hurts when you forget something is hot as my lil finger can testify
*insert that dumb look again*

[JavaB]

Re: Heat ratings

Well Ive been using 250C - 255C as the air temperature in a rotisserie oven. Roasting 250 gms in about 18 minutes.

http://coffeesnobs.com.au/YaBB.pl?num=1179926707/15%20#20

I also run the Corretto with air temperature (measured at the surface of the bean mass) of 250C.... and that also produces excellent roasts (upto 600 gms in about the same time).

But both these are air temperatures - the beans wont be that hot.... probably about 215C to 220C max at the start of SC (measured in the Corretto)

[Sullo]

Re: Heat ratings

cool thanks heaps JavaB, the UFOs (unidentifiable fryed objects) are the ones that missed the rotator arm, the turbo contraption is taking form better wait till morning before I fire up the mig welder again...
The 260C temp was from a small hole I rather hastily punched thru the side of it after I turned off the turbo mightve been a little higher but 260 was last recorded temp..
Now if I could only cut a round hole in the base of a pyrex baking tray thingy so Id have a viewing window, grrrrr at aussie post for delivering a smashed glass top, poo poo heads......

Back to the lab

thanks again JB

[KJM]

Re: Heat ratings

Sullo - have you checked lab supplies? Borosilicate glass is tough!

There are people who flog this stuff on ebay - maybe a thick petri dish would make a nice porthole? Or perhaps a giant beaker (they do litre+ sized beakers!)?

Just a thought.

/Kevin

[Sullo]

Re: Heat ratings

woohoo thanks for that Kevin, oh so many ways I can spend money on completely usless but stuff I just gotta have,
never thought of that, thats opened up a new slant on things

cheers for that
Steve

[Edward]

Re: Heat ratings

What about an old dryer? When I was a teen in the eighties we would convert old dryers into poppers just to have something really heavy and chunky (and annoying to throw away) as birthday presents. Never bothered how hot they can get though but it was hot enough to produce popcorn.
Edward

[Sullo]

Re: Heat ratings

I just got told that if I touch the dryer I will loose part of my anatomy AND Silvia......

good idea thou thats on the project board

[Thundergod]

Re: Heat ratings

I doubt a dryer generates enough heat to roast coffee.
Just google for what temperature popcorn pops at.
That should solve that question.

[Sullo]

Re: Heat ratings

yeah but the fun things i could do with all those parts!
may
be i just need a meccano set