[Digestion] Sulphur levels

[Anand Karve]

Dear Chanakya,
thanks for the correction. I think, I had used the value of methane
obtained from the dung of a water buffalo.
Yours
A.D.Karve

On Sat, Mar 2, 2013 at 9:36 PM, Hoysall Chanakya
<chanakya at astra.iisc.ernet.in> wrote:
> Biogas Friends
>
> Just a small correction to this train of thought
> BURNING Vs FERMENTATION - THE NEVER ENDING DEBATE
>
> Measured Cal value of dry dung = 3100kCals/kg
> Conversion of wet dung at 18% moisture = 40L/kg @60% methane
>
> This works out to (0.040 X 5500kCals/m3) ÷ 0.18 (correction for moisture)
>  = 1222kCal (or about 40% energy recovery efficiency
>
> I am not so sure that there is a more energy efficient way to recover
> energy from cattle dung.
>
> Best wishes
> Chanakya
>
> --
> Dr. Hoysall Chanakya
> Centre for Sustainable Technologies
> (Assoc. Faculty at Centre for Infrastructure, Sustainable Transport and
> Urban Planning (CiSTUP) and Centre for Contemporary Studies)
> Indian Institute of Science, Bangalore 560 012
> ph 91-80-2293 3046; fax-91 80 2360 0683
>
>
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-- 
***
Dr. A.D. Karve
Trustee & Founder President, Appropriate Rural Technology Institute (ARTI)