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plaasjaap

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plaasjaap last won the day on January 21 2017

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About plaasjaap

  • Birthday September 1

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    Male
  • Location
    Cedarville
  • Interests
    Everything off-grid

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  1. Make sure you have the comms cable that came with the Kodak the correct way around... On the one end it has a label "pylon'... Don't ask me how i know this It happens to the best of us....
  2. Well... this is the beauty of it (so far...) - I had the bag made and it cost me about 1/5 of the commercial offering of a real 'biobag' or much smaller (1/3) 'jojo' tank type readymade models! That was when i decided it is worth trying it out...
  3. HI Jay I am in WC in two weeks time... Always keen to help others out. It is really do-able, more so than I ever thought...
  4. Since then it has been fun trying to convert every single gas appliance that i can put my hand on to see if it can work on biogas. The Alva space heater took a lot of tweaking but it works (so far only on one panel or so), but even the safety cutoff/thermocouple still operates. What one really needs is a huge variety of different sized jets to swop out - it seems to be a very sensitive matter - just too much or just too little and it won't burn or would only burn sort-of. My wife's Smeg (!) has also been stripped and reassembled and it is now a multi-fuel machine... The oven i couldn't get con
  5. Thanks - yes nothing on that system. it is worth noting that in the original biogas 'bible' (A Chinese Biogas Manual) not a single mention is made of any such thing safety feature or need therefore. And this is after thousands of small scale digesters of various kinds have been operating for decades across the Chinese countryside. Maybe they didn't know of such a measure that can be taken, but I am quite sure if it was a big risk and many explosions happened due to flash backs, it would at least have been mentioned. Anyhow, it is a simple thing to put in yes.
  6. After some tweaking and opening up jets and getting the right air mixture, I managed to have a very nice steady burner flame going by the next morning. And it was coffee-time!
  7. I had learnt that the first couple of 'bloats' will not be very rich in methane and be mostly CO2, but i still tried to light it at the end every now and again... After day 7 I was getting a wee bit worried that I had build a huge CO2 emitting rumen... I mixed it again (pump the thinnest stuff from the bottom outlet tank back to the inlet tank). The next evening i could hardly believe it when i saw the first signs of a magical blue flame...
  8. By now i had finally connected my first section of gas piping - I used old rigid 32mm water piping. One needs to avoid low points and design the running of your pipes to firstly drain out any moisture - water vapour is always part of the gas coming out and this condensates in the pipe and will eventually block the flow of gas at the lowest points. Within about three days there was action, a very fat white worm was starting to bloat!
  9. Ok ,now it is allowing me to add photos again... So after 'ditch' was finally ready we installed the bag. The next important step was to 'prime' this monster and it took about 10 000L of manure slurry that I carted from a nearby dairyfarm. I don't have a decent slurry pump yet and i realised that the stuff i was sucking is too thin. I then got hold of a tractor trailer load of wasted sorghum silage - we mixed this in with the thin stuff. This stuff just reeked of "potential' energy...!
  10. Wow.. That's interesting. Well, the top half/more than half of the inlet hole is open and as far as i understand one needs to especially warm up the new slurry coming in... so perhaps one can put a tank 'in' this tank above the slurry that is on the way in... OK, now i read your reply properly... you mean the poly tunnel keep it warm.. Yes, i was thinking about that initially, but i heard to many stories of rats and stuff eventually getting to the bladder en there goes the gas..
  11. It will eventually be 90% cowdung. I started it with about 70% dung slurry from a nearby dairy as well as some waste sorghum silage
  12. Cool DeepBass, Yes i have seen. Why can i not load more photo's now....?
  13. Note the blocks on top - that is the pressure regulation system! Needless to say - the chap inspired me and off i went to University of Google for a good few months (ask my wife... i was gone-gone). Anyone who has looked at the subject will soon see there are various kinds of anaerobic (without oxygen) digester types each with it's own positives and negatives. Cost was the main concern for me even though I realised I need to get to quite a sizable setup to even think about additional heating as well as supplying cooking gas also to the other cottages. I have long thought of starting up a
  14. Hi all Thought it is about time that I contribute something to this forum. I wanted to start earlier to show how the project progressed, but I was too worried that it might not work...! It all started after visiting a youngster close to us in the former Transkei - in the corner of his kitchen was a two-plastic-drum-model biogas digester! With about 2L of cattle manure slurry he was cooking his daily meal on a little gas hob. It was an incredible eye opener for me! The concept was just too simple not to try it at home. We have been living off-grid on solar since being back on the
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