Thank you Paul for the insight. Let me know whenever you post an example (and the spreadsheet calculator) on the lovely Biogas wiki.
Have a great day, Love your Albert Einstein quotations On Tue, Nov 23, 2010 at 6:49 AM, Paul Harris <paul.har...@adelaide.edu.au>wrote: > G’day Vianney et al, > > > > I think it was mentioned in this list not that long ago that a “floating > drum” storage offers a good, simple way of measuring gas production. You > just record the change in height of the drum and volume of gas = area * > height (area of a circle = pi Dsquared/4 or pi Rsquared and there are 1000 > litres in a cubic metre). If you want more accuracy use a small diameter > drum with greater height to get the necessary capacity. Pressure and volume > of any gas are related by p1v1=p2v2, where p is pressure, v is volume and 1 > represents the initial conditions and 2 is the final conditions. Mass and > volume are related by density, where Density = Mass/Volume and the density > of biogas is about 1.18 kg/m3. The easiest way to develop the pressure > needed for burners etc is to add weight to the drum (bigger diameter – more > weight, since Pressure = kg*9.8/sq.metres) and if you measure “pressure” in > mm of water you need to know Pressure (Pa) = 9.8 *Height (mm). I think that > should let you calculate anything you need and I hope you understand the > “useful” metric units I have used. I will put an example (and possibly a > spreadsheet calculator!) on the biogas wiki. > > > > Happy Digesting, > > HOOROO > > > > Mr. Paul Harris, Room S116b, Waite Main Building Faculty of Sciences, The > University of Adelaide, Waite Campus, PMB 1, Glen Osmond SA 5064 Ph : +61 > 8 8303 7880 Fax : +61 8 8303 4386 > mailto:paul.har...@adelaide.edu.au <paul.har...@adelaide.edu.au> > http://www.adelaide.edu.au/directory/paul.harris > > > > CRICOS Provider Number 00123M > > This email message is intended only for the addressee(s) and contains > information that may be confidential and/or copyright. If you are not the > intended recipient please notify the sender by reply email and immediately > delete this email. Use, disclosure or reproduction of this email by anyone > other than the intended recipient(s) is strictly prohibited. No > representation is made that this email or any attachments are free of > viruses. Virus scanning is recommended and is the responsibility of the > recipient. > > > > *From:* digestion-boun...@lists.bioenergylists.org [mailto: > digestion-boun...@lists.bioenergylists.org] *On Behalf Of *Vianney > Tumwesige > *Sent:* Monday, 22 November 2010 5:41 PM > > *To:* For Discussion of Anaerobic Digestion > *Subject:* [Digestion] Accurate Biogas Yeild > > > > Hello AD friends, > > > Hope everyone is fine. Back to business, how would you measure the biogas > yield of a system? LPG is measure in Kg and the user can tell how much gas > he consumes. Biogas being stored in a volume (liters or cubic meters) makes > it hard to relate to pressure (of the biogas). Have you been able to find a > system pressure system good for Africa? > > Thanks > > -- > Vianney Tumwesige > > Director - Green Heat (U) Ltd [image: Picture] > P.O. Box 10235 > Kampala-Uganda > 256 (0) 71 237 9889 > > > "The more people are self sufficient in cooking fuel, the more personal and > financial freedom they have." - Emma Casson > > > > <http://trustvianney.wordpress.com/> > > > > _______________________________________________ > Digestion mailing list > > to Send a Message to the list, use the email address > digest...@bioenergylists.org > > to UNSUBSCRIBE or Change your List Settings use the web page > > http://lists.bioenergylists.org/mailman/listinfo/digestion_lists.bioenergylists.org > > for more information about digestion, see > Beginner's Guide to Biogas > http://www.adelaide.edu.au/biogas/ > and the Biogas Wiki http://biogas.wikispaces.com/ > > > -- Vianney Tumwesige Director - Green Heat (U) Ltd [image: Picture] P.O. Box 10235 Kampala-Uganda 256 (0) 71 237 9889 "The more people are self sufficient in cooking fuel, the more personal and financial freedom they have." - Emma Casson <http://trustvianney.wordpress.com/>
_______________________________________________ Digestion mailing list to Send a Message to the list, use the email address digest...@bioenergylists.org to UNSUBSCRIBE or Change your List Settings use the web page http://lists.bioenergylists.org/mailman/listinfo/digestion_lists.bioenergylists.org for more information about digestion, see Beginner's Guide to Biogas http://www.adelaide.edu.au/biogas/ and the Biogas Wiki http://biogas.wikispaces.com/
