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DESCRIPTION:Come to the permaculture guild gathering on August 2nd at 6:30pm to hear 
 David House present on homescale biogas.  Presentation starts at 7:00. 
  Come for networking and food/seed sharing before and after.\n\nBiogas, 
 sometimes called “the cousin of composting,” is what you get when any 
 organic material decomposes in the absence of oxygen (aka it’s anaerobic, 
 vs composting which is aerobic). Biogas is made largely of methane, which 
 is chemically identical to natural gas. Because of this, biogas is 
 sometimes called renewable natural gas. In other words, its 100% natural, 
 renewable energy from waste!\n\nThis talk is about how to build an entirely 
 new type of “anaerobic digester” – a device that makes biogas, and a 
 nutrient-rich slurry that works well as an organic fertilizer (used by 
 organic farmers in Europe for decades). What’s new about this digester 
 is that it can be built very cheaply, with materials entirely from Home 
 Depot (or a similar store), AND will work in cold climates, 
 year-round.\n\nDavid House has been working with biogas for 30+ years, and 
 wrote what many consider to be the “Bible of Biogas,” The Complete 
 Biogas Handbook, as well as Methane Systems, and numerous articles about 
 biogas. He has been experimenting with biogas and designing biodigesters 
 since the 1970s. He is the designer of a low-cost (less than $700 for 
 materials), kit-able, shippable, insulated, 2-square-meter biogas digester 
 for temperate latitudes (i.e. can be used in the United States) and is 
 also the designer of a low-cost, plastic-bag-based biogas digester for 
 equatorial belt countries. Previously he was the founder of Earthmind, an 
 educational non-profit teaching about ecological living, as well as 
 Computer Classroom, ici (computer sales), and an eponymous computer 
 consultancy.\n\nThe Gazebo Room, California Pacific Medical Center, Davies 
 Campus (at 14th and Duboce)\n\nDirections to the 
 Gazebo:\nhttp://www.cpmc.org/visiting/directions/directions-dav.html\n\n\nGathering 
 Details \n\nGathering begins around 6:30 p.m. over food and networking – 
 all are welcome to bring a potluck dish to share. Our guest speaker Karla 
 will begin around 7 p.m. and discussion usually runs until about 9 p.m. All 
 are welcome to attend.\n 
 https://www.indybay.org/newsitems/2017/07/21/18800983.php
SUMMARY:DIY Cold-Climate Biogas Unit w/David House & SF Permaculture Guild Mtg
LOCATION:The Gazebo Room, California Pacific Medical Center, Davies Campus\nThe 
 Gazebo is on the 1st floor of the South Tower. The South Tower is straight 
 ahead as you enter the driveway. The driveway entrance is in the middle of 
 Castro Street between 14th and Duboce Streets. You’ll see the entrance to 
 the campus on your left. It’s the building that has the big lighted 
 EMERGENCY ENTRANCE sign. If you enter on the ground floor, take the 
 elevator UP to the first floor.\n\nIf you come by public transportation, 
 take the N Judah to the Duboce Street stop and walk up towards Castro. If 
 you drive, there’s a parking lot at the end of the driveway on your 
 right, or you can try to find someplace on the street before entering the 
 driveway.\n
URL:https://www.indybay.org/newsitems/2017/07/21/18800983.php
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DTEND:20170803T040000Z
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