JO's gasified 92 Volvo

Steam heating system?
Rindert

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It’s the steam boiler that used to supply the paper mill with steam for paper drying. However, steam only feeds a turbine for making electricity right now. The majority of the heat is distributed for district heating and is distributed in the 80-90°C range. When the paper machines were still running the town was only allowed to consume 20-40% of the heat made. Nowdays some of the town’s garbage burners can have a rest and the garbage is sold.
One important difference is that the mill’s boiler used to run on 75% bark waste. External chips are now bought in huge quantities. District heating consumers are now seeing their bills increasing. Garbage can’t be burned in this boiler because it’s mild steel.

I’m sceduled for a date with the boss next week. All I know is the boiler will sit May-September and we will all work daytime with maintence during those months.

Haha, that’s the plan :smile:

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Hi JO, i’ve found the regulations papers, and started translating them, do you think i should start a new thread for them, or post them here where we talked about them? “Hijackin” your thread? :slightly_smiling_face:

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Doesn’t matter to me - unless someone else want to have a say.

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If you put on it’s own thread with a title it can put in our Library for future reverence.
Bob

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Good idea Bob, thanks.

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Did some maintence today and put the phone into the cleanout door. Looking for leaks. It’s been running a little hotter lately.
Hard to tell. The light on the phone makes everything look bright white. Around where the grateshaker rod enters through the floor may have a slightly different color - maybe.

Opened up the filter bucket. Black wet soot on the woollen pillow case stuffed with hay, but not much. Poured a can of water over it and let it drain. Looks like most soot drains between rides.

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It definitely looks off color at the grate shaker, but not a crazy amount? Looks very good otherwise, neat to see the inside finally :grin:

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JO, we were celebreting Lans first birthsday yesterday, l am not going to lie. Looking at that video of yours did not make me any favours today. Talking about the round and round cammera angle :smile:

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I agree I lost in there. I had to go back to your build pictures. At one point I think I was looking at where the gases leave the gasifer and go to the cooling rails? Or do you use a slyclone filter also?
Not sure.
Bob

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Ha, Bob I had the phone taped to a round stick and had no idea what I was aiming at :smile:
No, no cyclone. The huge space around the grate is the dropbox. At 1:10 you’re looking up into the heatexchanger.

@KristijanL You teach children to party like that already at 1yo? Slovenia - what can I say :smile: Tell him Happy Birthday :baby_bottle:

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JO; Thanks. That was an interesting view of your gasifier. Watched it sevveral times, and plan on a few more. Like I say “interesting”. I don’t know how much ash you took out before you filmed it, but I was thinking that from the picture you are getting some rather large chunks through your great. You drained a liquid out on the ground-- was that from the bottom of your filter or from the trap where the gas comes out of the cooling rails.? TomC

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TomC, I’m glad you found it “interesting” :smile:
I think the camera lies some. For reference the entire area under the grate is only 12" wide and the grate 6" wide. Very few char bits are larger than marbles. I raked out only a few handfulls close to the door, just to be able to get the phone inside. I like to leave some char/ash for insulation purposeses.

The Volvo system only has one place for black condensate and that’s the tank under the filter bucket. Both rails and hayfilter drain into it.

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Trip report:
I volunteered to take my mother to a dentist specialist yesterday. A 200 mile roundtrip. Longest DOW on a single day so far with the Volvo. Mostly cruizing around 60 mph.
No issues, only that on a trip like this I wish I didn’t raise the restriction a few weeks back. Ran hotter than I like - close to 600F entering the rails at cruizing speed.
150 pounds of wood burned. Produced almost two gallons of hopper juice, but only about a quart of black condensate. Harvested half a gallon of fine stuff in the dropbox (grate area) today and only a few handfulls of char.
$70 worth of gasoline saved.

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A fine report! Interesting with so many Wayne Keith-esk designs parts the smaller restriction performs so well. I’m thinking wood species must have a bigger effect then I thought before, you know exactly how to drive on your wood for best performance. Which makes Jacobs cross country trip even more impressive, adapting to so many different wood variables

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Good morning JO

Thanks much for the trip report .

You now with 2 vehicles could have the luxury of having a open road car and putt putt around town truck…

I think I have this :blush:

My V-10 ram will be at normal operating temps in about two miles and enjoys working on the farm or cruising around town all day . Does not like hyway speeds over 60 mph with out going hybrid .

My dakota truck takes about 14 miles to be at what I consider normal operating temp driving hyway speeds . It doesn’t enjoy putting around town but likes to be on the big road 60-70 mph.

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Hello Jo, the average wood consumption per 100 km remains 20 kg, as you said, this is equal to the energy of 8 liters of gasoline, bravo you have good results. I can’t wait to get time to try out the idea of ​​a double-nozzle gasifier that is supposed to work on the open road and in city driving. :+1::grinning:

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How much did you raise the restriction opening. Distance between nozzles and opening from before to new setting? Just curious. How much did it change in highway driving cooling rail temperures? This is a great information report. Fuel wood consumption is spot on. There’s nothing like putting tax free monies in your pocket. I bet your had the biggest SWEM on your face. Did she ask what the lemons were for? Lol.
Bob

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Marcus, I can’t really tell, because I often run a mix of species. Bulky fuel gives worse milage of course, and spruce slabs produce a flaky, poor charbed. I’ve learnt that much. Other than that I’ve noticed very little difference in performance. But then again, we don’t have the “tropical” species up here. No oak, beech or palm trees :smile: I hear a lot about poplar and cotton wood. I don’t have a clue what they are. We do have piss willow :smile:

Wayne, that’s so very true. The truck isn’t very fast and its gasifier is on the small side, but wonderful for putt putt work. It idles forever, pullstarting requires only a few klicks of tickeling and it hybrides well.

Even with the raised 4" restriction, the Volvo car thinks going slower than 50mph is a redlight idle, but it really likes stretching its legs on open roads.
Not that it matters much, but it doesn’t like hybriding either. It stumbles with the slightest squirt of gasoline.

Tone, If I may, I couple thoughts.
I use 1/3 of the nozzle csa in the lower row in the Mazda gasifier. If I ever try this again I will use less, maybe 1/5 or even less. It gets really hot down there. Also, I would simplify by using a common nozzle manifold. The lower row of nozzles will automaticly see the most vacuum and with a hard pull the upper row has no choice but blowing hard too. Valves close to a nozzle manifold tend to get stuck from tary smoke at shutdown. Don’t ask me how I know :smile:

Bob, 2.5 inches if I remember right. Went from 12" to 9.5 between nozzles and restriction.
Highway rail temp went from 200-250C to 300C+. But it has increased gradually. Probably because of a new ash cone buildup (chrinking charbed) with the raised restriction, maybe also heat-exchanging areas are carboning up with miles. I started to worry about an air leak, but I can’t find any obvious ones.

On another note: I hurried into town today. A few miles into the trip I noticed I didn’t get a hopper vacuum reading - normal rail reading and the car ran just fine ???
Leaving home, all I did was add a bag of wood, since the gasifier was already lit. I put the empty bag behind the driver’s seat and drove off. No one closed the lid :smile:

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Ha Jo, dementia is approaching, a similar thing is happening to me. :grinning:
You state that the gas is a little hotter at a higher load, which I think is better than the system clogging up, I think that’s a good sign. If you are thinking about what to do to produce cooler gas, there is a theory of the grate as a heat exchanger and heating the storage tank, where the wood dries and is already partially gasified with this energy. :thinking:
You have done well. :+1:

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