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SaraJohnson
01/16/2020 11:50 PM
Looking for a good coffee shop in Maumee, Ohio. Any recommendations?

snwcmpr
01/10/2020 4:18 AM
Maybe post in the Behmor section. Behmor users can see it. The SHOUTBOX post will be hidden in a few days.

jqaman
01/09/2020 2:51 AM
The flap on the back of my Behmor 1600 has come loose at one end. Its 15 years old. I was wondering if anyone has any idea how to fix it? thanks...john

JackH
01/02/2020 8:33 PM
Jyoungs3, you should start a post about it. The shoutbox entries will scroll away in time.

Jyoungs3
01/01/2020 1:14 PM
I just got a Freshroast 540 and my first attempt s we’re way under roasted. Does anyone have a proven profile.Thanks.

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Burner or Heating element BTU's/KW
allenb
Here's a rough first draft of a chart showing batch size versus an estimate of BTU's/Kilowatts needed. This is not based off of any scientific or mathematical models but is from examples of various roasters in production from several companies.

Dan's factor of 1.52 when increasing batch size times 2 seems to be close with some in the list.

These numbers are taken only from drum roasters with powered exhaust and typical fluidbed roasters. Infrared to bean roasters will probably require less kw per lb. if not using powered exhaust.

Please post any additional examples you find out there and I'll add it to the list or alter any numbers that are way off.

Fluidbed--------------------Drum

lbs--- BTU's---KW---------lbs---BTU's---KW
1-----10200--3kw---------1----6800----2kw
2-----17000--5kw---------2----10200---3 kw
5-----25500--7.5kw-------5----17000---5kw
8-----34000--10kw--------8
10----40800--12kw-------10---35700---10.5kw
12----47600--14kw-------3k

Allen
1/2 lb and 1 lb drum, Siemens Sirocco fluidbed, presspot, chemex, cajun biggin brewer from the backwoods of Louisiana
 
oldgearhead
If you can reclaim enough RC heat to maintain 150F at your blower inlet,
you will only need 1.2-1.5 KW to roast one pound to full-city in 12-13 minutes:
1) Drying = 4 minutes @ 1200 watts + 20% reclaim
2) Ramp to First Crack = 4-5 minutes @ 1700 watts + 40% reclaim
3) Finish = 4 minutes @ 1360 watts + 20% reclaim
oldgearhead attached the following image:
dsc_7371.jpg

No oil on my beans...
 
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