Re: [compost_tea] Re: Re: Air Required - Other
Kirk We just fiished 9 ACTt runs in the SFI lab 3 identical machines, identical quntities of compost, identical nutrients. We recorded DO2 readings near the low points of the O2 use curve of 3.2, 7.8, 5.7 Not a constant variation but a typical variation.
Our conclusion up to this point is that O2 demand is extremely variable depending on compost and/or nutrients. There are so many variables including the compost itself there may be only one way to select O2 input SYTEM :
. PUT IN MUCH MORE AIR THAN IS NORMALLY NEEDED MOST OF THE TIME TO HAVE ENOUGH WHEN THE DEMAND IS HIGHEST. THE DEMAND IS NOT PREDICTABLE. UNLESS YOU SETTLE ON ONE COMPOST THAT STAYS THE SAME, ONE STANDARD NUTRIENT, ONE STANDARD TEMP. AND THEN OPERATE SEVERAL CYCLES WHLE RECORDING THE O2 REQUIRED THRUOUT THE ENTIRE RECYCLE.
Our testing to find predictable recipes continues.
bob
Kirk Leonard <kirk_at_oregonatural.com> wrote:
Second thoughts after closer looks at machines tested and estimated tell me
1L/G/M in the .25+ range may not be a minimum. Good, tested machines go as
low as .2, .15, maybe .1? (air cfm/cf water...) I'd expect larger machines
need less, consistent with less compost needed, too. Anybody else testing?
Sunday. No ads. Amazing. Is "OT" other topic, or thread, or what? What
are "OT Flowforms?"
-- Kirk
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Received on Thu Oct 09 2003 - 21:34:32 EDT
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