Thank you Paul, I will definitely check the Wiki On Thu, Nov 25, 2010 at 5:20 AM, Bryan Sanchez Marcum <[email protected]>wrote:
> How can I determine the composition of the biogas generated from my > digester. > > On Wed, Nov 24, 2010 at 9:42 PM, Paul Harris > <[email protected]>wrote: > >> G’day All, >> >> >> >> As promised below there is now an example and a link to a spreadsheet on >> the biogas wiki at >> http://biogas.wikispaces.com/Pressure-Volume+calculations if you would >> like to check my calculations! >> >> >> >> 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:[email protected] <[email protected]> >> 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:* Vianney Tumwesige [mailto:[email protected]] >> *Sent:* Tuesday, 23 November 2010 3:17 PM >> *To:* [email protected]; For Discussion of Anaerobic Digestion >> *Subject:* Re: [Digestion] Accurate Biogas Yeild >> >> >> >> 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 <[email protected]> >> 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:[email protected] <[email protected]> >> 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:* [email protected] [mailto: >> [email protected]] *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 *Error! Filename not specified.* >> >> 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 >> [email protected] >> >> 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 >> [email protected] >> >> 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/ >> >> >> > > > -- > * > > Bryan A. Sanchez Marcum > * > > > _______________________________________________ > Digestion mailing list > > to Send a Message to the list, use the email address > [email protected] > > 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 [email protected] 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/
