Re: Get "MET" it pays...


"Erik Groomer" <ViridianCoffee@xxxxxxxxx> wrote in message
news:1150756658.171034.279690@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
...
Since Staub has been brought up again can I bring up Best Reaction
Ratio? He says:
" There is a window of reaction rates that will optimize cup quality.
This is called the Best Reaction Ratio, or BRR...The ideal
environmental temperature, ET, for best reaction ratio, BRR, is from
-401-424 degrees F, with 405 degrees F as the default value. The BTU
required is determined by the systems transfer efficiency, or ability
to impart the energy to the charge mass...Consequently, the MET should
not exceed 520 degrees F."

What I don't understand is Staub's claim that BRR is around 405F but
over and against that that MET should not be above 520. Could someone
please explain the apparent contradiction? I must be missing something.


My take on that is that he meant bean temp for BRR rather than ET.
Why? because earlier he says:
"Trigonelline melts in it's pure crystalline form at 424 degrees F
Degradation of trigonelline begins at approximately 378 degrees F.."

and when defining the BRR as being about "degradation of trigonelline" he
says:
"The ideal environmental temperature, ET, for best reaction ratio, BRR, is
from -401-424 degrees F, with 405 degrees F as the default value. "

its that 424 upper end that makes me conjecture that .




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