Hi i have been interested by gasifiers for a few years now but have only lately found this place…gold mine of info
one thing that has puzzled me is why no one has adapted/developed/moddified something to electronically control the A/F ratio when running on wood gas biased on the output of an narrow band (0-1v) O2 sensor…well it did puzzle me until i found this
it looks like he might have it running on LPG/Propane in the video judging by the bottle in the camera shot… but the intake set up looks like it is designed for running on a gasifier…the other thing i notice is that he seem to have a somewhat slow acting servo on the fresh air butterfly judging by how slow the rich/lean lights were blinking.
lol now i just have to figure out how to replicate that effect (while being an electronic moron) without breaking the bank…getting custom electronic stuff like that tends to be a rather pricy
The gek people have one. I am not sure exactly what they are using for sensors, but their board is based on the arduino which is an easier to use inexpensive robotics platform. You should at least be able to plug in a couple of things to measure pressure, temperature, etc, and maybe a fan speed control or grate shaker with it. You will need the hard data, with notes on what you did to correct the situation manually. Or else you will never be able to automate it.
When I was in Berkeley (APL / GEK) in 2010 I think, Jim’s number one priority was the grate shaker. They were struggling to automate that. The rest of the system was pretty much automatic but some fine tuning was required on the air mix controls. Either way I was very impressed and I suppose that was one of the reasons Jim flew me out there. It is difficult to find off the shelf parts to do this but some exist. I tried to get Ben in on the Kansas thing but he was thinking more like multiple gatherings with an internet connection. I hope he will pop back in at some point as I think he was pretty close to having a decent automated system but Steve would know more about this. I don’t know who’s boats are floating yet as none of them return my calls … ML