I’m looking for any suggestions regarding CO2 sensors / analysers for combustion gases measurements (small experimental boiler for coal and biomass, temperature of analysed flue-gas is around 200 - 300°C, expected amount of CO2 is approx. 9 - 14 %).
The problem with CO2 is that it can’t be easily measured. Carbon dioxide oxidation degree reaches the highest value, so not many other options than non-dispersive infrared absorption comes to my mind. All of these systems based on IR spectroscopy are extremely pricy with respect to our financial capacity. As far as I know and based on what I’ve found, there are most-likely no other options industrially used for CO2 continuous measuring.
Do you have any experiences which analyser up to $1500 may be suitable (decent accuracy and response - its output will be sent to the datalogger A/D input).
Hi all. I have been learning about how my car works over the last few years and I feel confident to be able to maintain it myself / knowing whats wrong when something does go wrong. But I was wondering if I could ever get that level of confidence to maintain an electric vehicle. It has to be way more advanced than a normal car.
Are there many swappable parts on electric vehicles? Is maintenance a huge issue with these kinds of cars? And further, is it more expensive to maintain an EV when something breaks than a CE? Thanks.
Hi Guys, first post on EngineBuilding. I'm curious if you guys are building engines how many also run on the dyno and are doing your own tuning.
If you knew what the firing pressure trace looked like, say against crank angle, how much more could you do on the tuning, choosing or even developing new parts?
Round 1: They start 10 feet apart.
Round 2: Kimblee has an incomplete philosopher's stone. They start 30 feet apart.
I used to favour bunker. But combustion gives such insane value in teamfights that it is difficult to pass up.
Then checking heroesprofile, filtered for diamond, masters and above storm league, combustion has a 4-5% higher winrate over the past year (reasonably big sample size).
Any high level blaze mains can share your thoughts?
We saw the history he added to lightning bending. If you had to guess do you think we get some info about combustion bending in the next book? Or maybe even a combustion bender on top it
I’ve recently started producing some hydrogen and oxygen and I thought of making a rocket engine using these gasses, I’ve got a few challenges to overcome such as how is the injection of the Fuel going to work, how will I store the fuel etc. however my most pressing issue is that of the materials for the combustion chamber.
I don’t have high expectations for my engine. I’m not looking for much thrust, just enough to push a skateboard along a road, because of that I won’t need super high combustion chamber pressures.
Hydrogen burns as it as around 2500 degrees Celsius. I need a cheap heat resistant and somewhat somewhat strong material for my combustion chamber. It may not have to stand up to 2500 degrees. I’m not sure how hot it will get but I can’t do much for active cooling other than a small fan.
I’ve looked at niobium but it requires a coating to keep it from oxidizing at high temperatures. Graphite has the same problem. Steel just melts too easily. I’ve looked at using reinfor... keep reading on reddit ➡
I'm looking for books/articles about combustion, specifically how combustion processes occur in propulsion systems. I've already taken a fluids and thermo course, so something which is a natural progression from these, maybe? Any resources that you refer to for combustion will be helpful! Thanks. Stay safe.
A small part of a fictional coming of age set in a small town in Southern Africa.
Very excited to hear feedback - short or long - on your first impressions on what I’ve written.
Thank you! Thank you!
Critiques total: 931
Recently I’ve seen quite a few bikes that are basically mountain bikes with a 50cc combustion engines strapped to them. Are these things legal? I feel they need some sought of regulation. I believe they’re already banned in NSW and QLD?
I will admit I don't exactly have a habit of pushing flashy sports cars to the limit in real life, but I do it quite frequently while playing video games.
So what is actually happening when you reach "top speed" and what is preventing you from going even faster?
It seems like when you are driving flat out in top gear, the car will hit it's maximum speed and then it will roll back a few mph before returning to it's maximum speed and then rolling back a few mph again and again.
Would this happen in real life or would the engine just explode? If this does happen in real life why? Assuming there is still fuel to burn why can't you continue going faster? Is the car reaching the mechanical limitations of the engine?
Edit: thank you to all, this has been a question I have carried with me for a long time and I finally got around to asking it. You all have made it much clearer!
Like, genuinely, the only people who have ever died onscreen from combustion bending are the two combustion benders themselves. I think it might statistically be the worst bending type to possess in the entire show. They never once killed anyone with it aside from themselves. At best, Pl'i used it to help win none lethal fights, but Sparky basically never once used it for anything remotely useful.
I wonder what the most statistically useful bending type is? Metal maybe? I guess lightning actually managed to kill someone, twice if you count aang's 'death'.
Like when combusting the weed by joint or bong etc how much of the high comes from inhaling the smoke and other byproducts?
Hi drug nerds, I’ve noticed the same spot where used “bong water” is tipped after use, kills off lawn underneath it. FYI the lawn is Kikuyu “Pennisetum clandestinum” which is fairly hardy and vigorous.
And I mean kills it good. Back to bare earth, and the grass will only send out stolons across the splash zone, and root only on the other side. And that took a good six months. Seed would not germinate and planted rhizomes would not take.
TLDR; What is the (suspected) herbicide in bong water? Or what’s going on here?
Imagine what he’d be like Under Sozin’s comet! He’d probably start shooting Kamehameha’s out of his face like its nothing.
Like P'Li and Sparky Sparky boom man are both really tall?
I remember seeing a recent-ish documentary on this and a British chemist (Dr Emsley) said that the cause was a build up of a pyrophoric liquid called diphosphane which has been recently found to be present in the gut. In extremely rare occurrences, the gut malfunctions and produces too much of this and once it reaches a certain concentration it ignites, which also ignites all the gasses in the intestines, producing an explosion that tears through the abdomen causing a person to burn from the inside out and burst into flames.
Would that be a painful death? If so would you die from burning or suffocation from the smoke? Or would you just instantly go into shock and pass out?
So I've been using my Fury Edge for the past few weeks and absolutely been loving the device. However recently I've noticed that when using the dosing capsules - I'll occasionally get an infinity bowl.
Basically, after taking a bunch of rips at a higher temperature like 430f I will continue to get clouds. When I remove the mouthpiece I see faint vapor/smoke moving upwards from the heater oven and the capsule itself. There's also a very intense smell relative to the usual sessions
I've checked the bud itself and while especially dark it doesn't appear burnt.
I have accidentally gotten water in the heater before.
Any advice you guys have would be greatly appreciated!
Combustion is a modded towny with a dynmap, the idea of the pack is to use mods to make a town and protect from other towns. The pack is full of lots of mods for different types of players. Tinkers and tinkers amour for people who want to do some blacksmithing. immersive railways and engineering for the train infuses, mekanisms for the tech guy and pams for the farmers. Even if modded isn't your thing we have lots of lighter mods like chisel and mrcrayfish.
Add me on discord to join Enfys#2088
I've owned and arizer EQ for about a month now, and loved it since the first day. During this quarantine my access to bud has been limited, but I managed to score some hash that I've sprinkled in with some trim leftovers in the cyclone bowl. It requires higher temps than bud to fill dense bags, so I usually climb to max temp (260C) during the sesh. I've done this 20+ times and gotten the usual coffee brown abv, but yesterday my final bag tasted like ass, so I looked at the bowl and was fully white, cigar style ash. I had to clean the glass and discard the bag cause of the fowl smell. Is my unit defective, or am I not supposed to go to max temp? I believe the temp sensor works, cause if I set it to 50C I can touch the heating element just fine. Perhaps the trim i was using was a bit too dry and brittle? Has this ever happened to someone else? Thank you for reading. Mad love to everyone in this great community.
The shape of the bypass duct creates a hybrid convergent-divergent nozzle and aerospike. The "spike" should be relatively easy to cool, if you can shut off the engine and allow whatever air present at that altitude to flow through it. (Or route the rocket fuel through it - in any case, it gets to radiate heat away, unlike a conventional aerospike.)
But if this was a viable engine design, I'm sure there would be some reference to it and I haven't found one. So why can't you do this?
I'm sure I understand the idea here, but my father doesn't. I've tried explaining it to him, but he always says that it doesn't make sense to him. He says that, for instance, a twin-cylinder engine should be more effective and balanced with an 180° angle, just like a bicycle crankset. He believes that any other firing order would be less effective because there's a bigger gap between the moment when each cylinder fires, and that a perfectly even firing order has the smallest gap. He says that inline 3-cylinder engines are naturally balanced and that they should be the smoothest engines of all due to them "necessarily" having an even firing order, but I don't think things work that way. Surely cylinder count and the way cylinders are arranged should not be all there is to it.
I believe that engine proportions (bore and stroke) have a lot to do with this. Depending on the engine's dimensions, a certain firing order will burn fuel more efficiently. The crossplane crankshaft design used b... keep reading on reddit ➡
From his liner notes on The Black Saint and The Sinner Lady:
>[Miles'] second remark was, "Why do you put D flat, E flat, G flat, and A flat all in a C seventh chord?" I still just look at Miles when he jokes like that because Miles was flatting along with the seventh, the ninth, tenth, twelfth, and thirteenth in Bird's days. And I am also aware that it is a compliment to Jelly Roll if not to me that he, Coltrane, and Roach with their bands got away from those bedamnable fourth cycles and chords on every two beats. Perhaps when it is understood to them and Jelly Roll that pedal point keys have an easily usable minimum of three key signatures for improvisation, "spontaneous composition" instead of the one tonic key pedal point scale now being used, music will make another turn in this century so that people will know how serious spontaneous composition "improvisation" really is and not just how loud and long it swings or how we swing and sway.
**I'm sure you could theoretical... keep reading on reddit ➡
For me if I want to get a quick buzz and don't have the time, a bowl or one hitter is still something I keep around. Overall I like the M much better and it is my primary
I have a couple of different strains from a couple of different sources. I have a blue dream and it vapes like a dream (pun not intended). I get minimal, but some vapor and wonderful bold flavor on the first hit. And then awesome flavor and clouds on hits 2 and 3! But then I have another indica that tastes good on the first hit, but zero vapor. On the third and forth hit I get a lot of vapor, but there is a strong "popcorn" like taste and smell that permeates the rig. Does this sound normal? Any tips? Definitely having a good time learning though ;)
[DOI] - https://doi.org/10.4271/620170
Endicott, D. and Tervo, W., "Combustion Chamber Design for Two-Stroke Cross-Flow Outboard Engines," SAE Technical Paper 620170, 1962, https://doi.org/10.4271/620170.
Unable to find on Sci-hub or Libgen, thanks in advance
Went to download this today and it seems the author hid the nod on the Nexus just today. Anyone know what's up?