Hi there!. This is Lewis from Spain. Best wishes and happy new year.
Farming and Mechanical Engineering background. Have been in touch with gasifiers for a while but not for engines but for thermal usage, where , IMHO, is where they run better. All pains and troubles around gas goes away when you decide to burn the gas instead cool it and put into an ICE. I’ve tested and modified chineses JXQ-10 (or any clone) for running with straw, sawdust, and a custom mixture for a customer. The goal was just to produce gas from the worst possible source (low quality and humid “fuel”) and find a way to burn it cleanly.
A few clips:
First, unmodified-out-of-the-box JXQ-10, runing on barley straw, unprocessed, just for system testing purposes
Second: Gasifier feeding a modified natural gas boiler (idle speed). Boiler is depression type. You can hear the gasifier “breathing”, as it was the end of the test, not so much fuel left and probably some bridging due to long chips used.
Heavily modified jxq10, flow changed to updraft. Top plate is for testing purposes in order to establish the optimal blower pressure vs bed packing as a pilot for a further development unit. Fuel was cheap furniture sawdust stored uncovered, quite damp.
https://www.youtube.com/watch?v=tjbDM-laq8Q --> beautiful tar making machine. Flame self sustainable and extremely powerful once smoke reaches the tar condensing temperature, slightly above 200ºC (sorry, I’m one of those morons who doesn’t understand imperial units… :-))
Anyway, now as a farmer I am seriously considering converting a good old diesel tractor a, fordson major clone- EBRO 160 (wich is basically a last model fordson major disguised in MF color scheme) to woodgas (appears in the very first video)
I have a almost proper workshop and should be able to make the conversion on my own, I do have the tractor and by now, is just sitting in the barn (we do have 3 other tractors, a kubota me5700, a JD 6110 and a Valtra N143 and just 3 pairs of hands in best of cases)
I’ve following for many many years the work of Mr Keith and have been inspired by its conversions. I’ve also seen over and over again the Johan Lynel videos, G3 gasifier, Drizzler, Vulcan… and feel it’s time to make something on my own.
I have some constraints so that’s why I’ve decided start this topic in order to find the best possible solution.
FUEL: should be wood chips. 35ha. (sth around 90 acre) of almond trees, which yearly produces a vast amount of wood (prune wood) wich now is burned year after year with any other usage. This type of wood can be easyly processed with a wood chipper but size will be small. Furthermore, it is easy to find in the market G30 woodchips (http://www.tpchipper.com/wood-chip-know-how/wood-chip-as-biomass.aspx).
Full electronic control. As tractor should be intended for “non woodgas trained” people, start, warm up and gas mixing of the gasifier shoud be 100% automatic (arduino/raspberry pi…).
POWER: Tractor should be able to do some “real” work, not just moving around. That’s why I’m considering scraping the old Ebro (4 cyl 57hp on diesel) and finding somethig like a JD 3130 (6 cyl 98 hp on diesel). Furthermore, I do adore the purr of that straigth six… https://www.youtube.com/watch?v=DdNVLccPREE but as trees grow, the smaller the tractor the better. I’m puzzled.
I’m even considering finding a turbocharged diesel tractor but converting to woodgas whithout the turbo (As turboed engines have less compresion ratio)
So, first two questions:
-suggestions about gasifier desing basis given the fuel available?
-estimated power loss on woodgas?
Thanks so much!