Ghostchips Posted September 19, 2014 Share Posted September 19, 2014 I need to find some kind of blower that is made from steel to use for lighting up the system, it would be used to create the vacuum before the engine is started, don't holden HQS have a steel heater fan? What if you had a blower on the air intake for the burner pushing air in instead of sucking? It'd be great if you could store woodgas, that'd make life much easier! Perhaps I should put some chemistry wizardry to the cause and give it a crack, unstable gases are usually best burnt pretty quick smart though I suppose. Or since this was done many many moons ago and we now have catalytic converters perhaps physics is the better tool to have a crack at it with. That'd at least get rid of the carbon monoxide which is probably one of the main problems, use up a little HC to convert to H2O (which is already present) and CO2 which is also present. As far as i know the carbon monoxide is actually the fuel the car will run on. As for storing it they did have gas bags on the roof back in the war but not normally with a wood gas generator. Quote Link to comment Share on other sites More sharing options...
SOHC Posted September 19, 2014 Author Share Posted September 19, 2014 If the blower was on the intake it wouldn't relay work, would cause the fire to burn out of control, the fan is just for starting up and you have a bypass valve open when the fan is on and you hold a match to that to test the quality of the gas befor starting the engine. Yes the bags of gas on the roof are full of coal gas, they did have some cars with CNG looking cylinders on them but its not woodgas. There are little or no improvements I can make to the Imbert gas generator Quote Link to comment Share on other sites More sharing options...
TheAudioDude Posted October 10, 2014 Share Posted October 10, 2014 love the idea, here's a nice stainless steel job 1 Quote Link to comment Share on other sites More sharing options...
artyone Posted October 11, 2014 Share Posted October 11, 2014 Is this in the same area as the rocket stoves? Sorry I have absolutely no idea what's going on with creating gas from wood except recently someone asked about getting creosote and after a little research I found out it is part of the soot in chimneys after burning wet wood at too low a temperature. Anyways the rocket stoves seem to be about starving small amounts of wood of oxygen and then a process of chemical change of the resultant vapours... but I've yet to understand or study these fully. I may be getting confused as I remember a chap, Brodie, trying to explain some system for making cars go out at the infamous Gordontown in Titirangi and it seemed to be a hybrid of the thing you are building and the Rocket Mass Heater. Is it the resin in the wood which provides the tar and if so I remember collecting some Puka tree resin after finding one at a gas station which was bleeding profusely, at the time I was thinking about making varnish from beeswax and tree resin boiled in meths so was on the look out for resins. Quote Link to comment Share on other sites More sharing options...
SOHC Posted October 11, 2014 Author Share Posted October 11, 2014 Is this in the same area as the rocket stoves? Sorry I have absolutely no idea what's going on with creating gas from wood except recently someone asked about getting creosote and after a little research I found out it is part of the soot in chimneys after burning wet wood at too low a temperature. Anyways the rocket stoves seem to be about starving small amounts of wood of oxygen and then a process of chemical change of the resultant vapours... but I've yet to understand or study these fully. I may be getting confused as I remember a chap, Brodie, trying to explain some system for making cars go out at the infamous Gordontown in Titirangi and it seemed to be a hybrid of the thing you are building and the Rocket Mass Heater. Is it the resin in the wood which provides the tar and if so I remember collecting some Puka tree resin after finding one at a gas station which was bleeding profusely, at the time I was thinking about making varnish from beeswax and tree resin boiled in meths so was on the look out for resins. This is nothing to do with rocket stoves or heating systems, there are chemical reactions going on, it runs the engine on 100% wood gas, when you see wood on fire in the fireplace you are seeing the gas burning, this system collects the gas. http://en.wikipedia.org/wiki/Wood_gas_generator Creosote is a byproduct of refining oil and gas, I think your thinking of wood vinegar. Soot, moisture, and tar are things you don't want in making wood gas. Quote Link to comment Share on other sites More sharing options...
SOHC Posted September 6, 2016 Author Share Posted September 6, 2016 I am going to have another crack at this, I got a cylinder the otherday I am going to make a filter that I can pack with grass or old pink bats something, I have made the flange for the bottom of the hearth just need to weld it on. 4 Quote Link to comment Share on other sites More sharing options...
SOHC Posted May 25, 2018 Author Share Posted May 25, 2018 I ended up turning the gas cylinder I was going to use as a filter into a furnace, but I found some other plans for a filter that fits on after the cyclone that uses a fibreglass blanket that could be cleaned and reused, still need to find a vichical to fit this to, the last one I got I decided it was too good to chop up, something old and big, I was reading an old book and they were running a sawmill that used a Dodge flathead 6 with no filters at all and a very crude downdraft genarator, every now then the head had to be removed and the valves and Pistons in place wirebrushed to remove the crap. 2 Quote Link to comment Share on other sites More sharing options...
SOHC Posted February 21, 2019 Author Share Posted February 21, 2019 Where would I find some heat exchanger finned tube like this? needs about a 35mm internal ID, I am remaking the cooler / gas condenser. Quote Link to comment Share on other sites More sharing options...
RUNAMUCK Posted February 21, 2019 Share Posted February 21, 2019 Maybe inside an old heat pump unit? 1 Quote Link to comment Share on other sites More sharing options...
Yowzer Posted February 21, 2019 Share Posted February 21, 2019 AliExpress? 1 Quote Link to comment Share on other sites More sharing options...
h4nd Posted February 21, 2019 Share Posted February 21, 2019 Engineer in Chch got some locally, but he's incommunicado in one of the outer Falkland islands at the mo. In a hurry? 1 Quote Link to comment Share on other sites More sharing options...
SOHC Posted February 22, 2019 Author Share Posted February 22, 2019 3 hours ago, h4nd said: Engineer in Chch got some locally, but he's incommunicado in one of the outer Falkland islands at the mo. In a hurry? not in a major hurry, if anyone was scraping some heat exchanger from some factory or some big refrigeration thing might have it Quote Link to comment Share on other sites More sharing options...
fletch Posted February 22, 2019 Share Posted February 22, 2019 7 hours ago, SOHC said: not in a major hurry, if anyone was scraping some heat exchanger from some factory or some big refrigeration thing might have it We just pulled out some heat exchangers out of a large compressor that have a bundle of tubes like the ones pictured. What pressure rating do you need? How long? They are steel tubes. Slightly corroded hence the replacement. I'll see if I can chop some out for you. Our company has one of those policies that it all has to go to scrap, but I'm pretty sure some of the tubes had to be 'cut' out to get the coolers out... 2 Quote Link to comment Share on other sites More sharing options...
tortron Posted February 22, 2019 Share Posted February 22, 2019 On 22/02/2019 at 06:04, Yowzer said: AliExpress? Yes, I was looking at some a couple months ago Quote Link to comment Share on other sites More sharing options...
yetchh Posted February 22, 2019 Share Posted February 22, 2019 On 21/02/2019 at 21:21, SOHC said: Where would I find some heat exchanger finned tube like this? needs about a 35mm internal ID, I am remaking the cooler / gas condenser. Could you not just use and intercooler as the condenser. Quote Link to comment Share on other sites More sharing options...
Yowzer Posted February 22, 2019 Share Posted February 22, 2019 They'd probably block up too easily / be too hard to clean? Smoke leaves quite a buildup over time. Quote Link to comment Share on other sites More sharing options...
SOHC Posted February 23, 2019 Author Share Posted February 23, 2019 3 hours ago, Yowzer said: They'd probably block up too easily / be too hard to clean? Smoke leaves quite a buildup over time. thats right, it needs to be befor the final filter as it condenses the moisture and gas Quote Link to comment Share on other sites More sharing options...
yetchh Posted February 23, 2019 Share Posted February 23, 2019 Judging by that vid above there should be no smoke in the condenser.. Just gas. Quote Link to comment Share on other sites More sharing options...
SOHC Posted March 11, 2022 Author Share Posted March 11, 2022 I almost scraped this when I was moving the shed, still after heat exchanger tube if anyone knows where to find it? Quote Link to comment Share on other sites More sharing options...
tortron Posted March 11, 2022 Share Posted March 11, 2022 https://www.absboiler.co.nz/products-item/fin-tubing https://www.windsorengineering.co.nz/industrial/crosslecoils/finned-tube/ 1 Quote Link to comment Share on other sites More sharing options...
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