You really are a technical master Tone
I believe everything you say Tone, even if I usually have no idea what you are talking about. I understand this one. Just wonder how much battery it takes to get to that heat range.
I belive for sure. I have a throtle plate on my tractor (17/1 cr) and it will run even if the flap is closed, at wich point the cr in maybee 1/5. Will not start on it thugh.
Mr. Tom, until now I used a 45Ah battery, I did a trial run on this battery as well, now I gave him a 100Ah battery. I also replaced the glow plug, as the old one had burned out, well, now the engine starts without any problems.
Today I finished the work on the tractor, the gasifier is installed again and I did a short test drive, the feelings are good, well, I have to wait until I load it, as it should be, and then I will report on the changes.
Tone, I’m impressed - as always.
But I struggle to come up with suitable compliment. Ismo explains one of the reasons
When you add a third level of nozzles to your gasifier, do you change the size of the nozzles?
I mean, does the nozzle section stay the same? Or do you reduce the nozzle section to compensate for the increase in the number of nozzles?
I hope to be understandable, ask me questions, so that I can try to make myself understood better
Thierry
Thierry, if you mean the size of the nozzles, in the hot pipe, I didn’t change them, I just added 10 4mm holes in a wide area above, which are supposed to influence the course of pyrolysis and the formation of charcoal above. This air intake actually starts to work when the engine is running with a higher load, and with a lower load, even pyrolysis gases can enter through these openings and descend on the lower nozzles, at least that’s what I think.
Tone, you are not only building new gasifiers, I believe you are writing a new interpretation of gasification.
do you think that the enlargement of the reaction zone (3 level of air injection) is made possible because the heat losses are reintroduced into the gasifier?
Thierry, I’m just trying to adapt the gasifier to natural peoces for converting wood into useful gas. The latest findings on the gasification of coal, which actually takes place in the plasma at 4000°C, show that it is actually necessary to add oxygen to the lower part in order to maintain the plasma (fire), which converts the coal into gas, and in this plasma, the other tar conversion reactions take place gases and water vapor into a rich powerful gas to power the engine. I will again repeat the well-known thought, “all conversions in the gasifier take place in the gaseous state”.
Hi tone, just checking temperatures here at 4000 C° this is 7232 F° how can any metals survive these temperatures in the fire tube / nozzle / restriction or grate area. At 4000 F° it is still at 2204.44 C° . I have only gotten my grate temperatures up to 1760 F° or 960 C° and I think I was over pulling my WK Gasifier because power drop off and my drop box temperatures started climbing fast.
At 4000 C° any minerals in any organic matter will form and come out of the carbon. Being clinkers as ash or metals, or am I missing something here in 4000 C° temperature? Is this the very inside central part of the white hot part of the lobe of charcoal in the fire tube that gets this hot?
Mr. Bob, I posted the link to the properties of carbon in a neighboring thread, the fact is that carbon is gasified at a really high temperature and thus free carbon atoms are formed, which can bond with oxygen or hydrogen, probably these temperatures are right on the surface of glowing coal, or inside the coal, and then they drop rapidly, probably below 1000°C, as they are surrounded by water vapor, nitrogen and tar gases. The plasma of CO and free carbon atoms with a temperature of 4000 °C, which comes from pieces of coal, breaks the molecules of water and tar gas and thus synthesis gas is produced, and the temperature drops a lot. If there are enough oxygen and hydrogen atoms, all gaseous carbon atoms are consumed, otherwise they cool down further through the system and are deposited as soot. That’s how I try to explain the essential reactions that take place in the gasifier and adapt the construction accordingly.
So when you say carbon you are talking about wood charcoal and not mined hard coal carbon ore. I just did not realize how hot it really gets inside the white hot lobe area of the charcoal or on the surface area of the charcoal. No wonder we get a huge quick temperature rise spike when the hopper runs out of wood or charcoal with the heat radiating up into the hopper. Thanks for making this more clear to me of what is really happening in this hell fire area of the firetube and the importance of drawing the heat off the firetube wall and shielding and insulation that is needed to protect the metals in this area.
Hmm l must admit lm sceptical about this theory. But l cant proove or disproove it.
Maybee let me just say that in chemistry, gases can react with solid particles just fine, there is no need for both reactants to be gases or liquids. The gaseous molecules just need enaugh kinetic energy (activation energy) to overcome the repelling forces and “knock off” a atom from the solid reactant. If we look at gasification particulary, at room temperature, oxigen atoms are slow and just bounce off the surface of the carbon particle. Like pingpong balls off of the wall. When we increase the temperature the “pingpong balls” get faster and faster and when we reach about 700C they are fast enaugh to knock off a “peace of the wall”.
One more thought, I use small bores for air supply, so the amount of air that enters a certain area is determined, small bores also cause swirling and mixing of gases, but they have one drawback, the start-up and heating of the gasifier takes a little longer.
Kristjan, I respect your expertise, but what exactly is the temperature of a substance? Isn’t temperature the speed of circulation of electrons around the nuclei of atoms? When the speeds of these electrons increase, the distance between the nuclei also increases, the substance expands and when the substance heats up enough, the bonds begin to break and the possibility of forming new compounds arises, I don’t know exactly how carbon behaves, but for sure the oxidation temperature carbon very high,…
No Tone, the speed of an electron is “stable”. Actualy it has no speed… lt gets wery complicated when we look in to the atom. The quantum world is misterious and strange… for example, it is possible for a electron to be at different places at the same time, called superposition. Also the electron does not travel around the nucleus on a rail like like shown in the clasical depiction of a atom. In reality they “look” more like this
And each of these lines represent the most likely place where a electron can be found and in theory it can be anywhere but then the probability gets exponentaly smaller.
The electron doesent realy spin around, it is in a superposition in a orbitale at all places at the same time, but for the ease of imagination, its usualy depicted as if they spin around.
My knolidge about this is limited and rusty, plus this is about where chemistry ends and phisics start, so we only got basics at school.
Temperature thugh is the kinetic energy of a whole atom or molecule. Speed of a gaseous molecule or vibration of a solid. And when the vibration is too hard (temperature high) the bonds between molecules break. The substance becomes liquid or gas.
With carbon, the bond is extremely strong. Each atom is connected by 4 others by 4 bonds so its extremely hard to break apart, hence the incredibly high melting point.
It is these 4 bonds that make carbon so usefull too… it has 4 places to connect to other atoms, and form chains, that make our fuel, food and DNA…
This from direct observations.
What is more than just a temperature energization?
The burning charcoal glow energy transfer.
I watch surfaces deposited black carbon soots “disappear” subject to that intense energy glow. This same solids to carbons gasification happens too. The char glow energy penetrating and affecting below just the solids surface molecules.
Speed off as a gaseous; they then flow. Flow by the principals of more to less. And outside induced factors.
Bird swarm flows. Bait fishes flow balls.
S.U.
Kristijan, this subject reminds me of the time when I videoed my charcoal gasifier forge nozzle with a mirror from the bottom. It showed the charcoal bouncing around in the air stream glowing white hot and getting smaller and smaller while giving up CO before dropping out of the air stream.
Here we have come to the basic chemical-physical properties of the processes that take place in the gasifier, and there are different ideas about this. Kristjan is probably right when he talks about the static action of “electrons” that connect the nuclei to each other, but temperature or electric current sets them in motion. Fire is actually a plasma of electrons, which are redistributed between the nuclei of oxygen, hydrogen and carbon atoms, creating peaks of energy that we see as fire, it is actually a plasma of particles with energy that can also be converted into electric current. Let’s remember solar receivers of electricity, various fire detectors in gas burners,… We try to keep this spark and radiation from glowing coal in the core of the process, which is best done by reflection from the metal surface. Modern devices for the processing of waste maintain a layer of plasma with an electric current, they state a temperature of over 4000°C, through which the waste travels and breaks down into basic elements, they also state that carbon is needed in this process. The gas from this process is very calorific and nitrogen-free, and the electrical energy input represents a rather small proportion of the gas energy obtained.
When I think like this, I realize that actually the entire operation of wood gas engines is based on the flow of electrons, first in the gasifier, then in the ignition coils and finally when the spark plug is ignited and the wood gas is burned, a whole mess of electrons jumping.
I like it. When thinking this in the Electromagnetic field science of a vortex toroidal field like Testa explained it. With both neutrons, photons and electrons.
like Kristijan said what they draw up on paper to show in a simple drawing is not how it really is in real life functions of motion in a atom structure. We live in a electrical universe.