G'day Steven, For a small system I suggest a "water trap" is the best check valve, as it also acts as a flame trap and a condensate collection point. For a couple of ideas go to http://www.adelaide.edu.au/biogas/safety/ where you can view sketches of Flametrap1 and Flametrap2.
Happy Digesting, HOOROO Mr. Paul Harris, Room 202 Charles Hawker 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] 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. -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Steven Bolgiano Sent: Wednesday, 22 June 2011 7:07 AM To: [email protected] Subject: [Digestion] Flares, Check Valves, Insulation Blankets Hi Group, I thought I'd put a group of trivia questions, in one email. Gas Flare - In terms of a small digester, can anyone describe or point to plans for self-assembling a gas flare? I assume it would be a type of pressure valve with an activation for a battery operated igniter, so that if the gas collection bag became too full it would relieve pressure by burning off excess? And any comments or advice on flares in general, or how it might apply to a bladder tank style containment would be great. Check Valves - I assume a gas check valve would go between the gas containment and the generator engine, also between a utility like the above mentioned flare, .... where else in a small digester system should a check valve be located. I know with the solar water heating for tanks, we just completed ... in terms of a water valve, a "swing check valve" was required because our solar water heating is a closed loop with next to nothing in pressure to open a spring loaded valve. What are the various kinds of check valves for gas, and what is best for a small system? Insulation Blankets - I know quite a few list members are from outside the U.S. so they may not be able to help, but I'm looking for a UV resistant insulation blanket, black on top and reflective on bottom to cover bladder tanks in winter. These tanks actually have a low profile "greenhouse" shell over them, so the ambient greenhouse temps can be as high as 65C. The blanket would need to be 5 x 9 meters. Any suggestions for sources to buy? Thanks! Steven -- Steven Bolgiano Executive Director Planet Foundation Ltd. [email protected] 443.235.1344 _______________________________________________ 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.bioenergyli sts.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/ _______________________________________________ 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/
