Compress Air with No Moving Parts! - Trompe

[@PracticalEngineeringChannel]

Make sure you never miss a Practical Engineering video and keep up with all my other projects: practical.engineering/email-list

[@yt.personal.identification]

Using it to blow up balloons, and you have a way to teach kids. ...just a thought.

[@alejandrodejesusrodriguezq4880]

With not moving part? But the water is Moving

[@charliebrownau]

Gday Please upload your content in 2020 to BITCHUTE and LBRY Mainsteam social media platforms such as Twatter + Fakebook + Google/YT is going thou heavy censorship and shady anti consumer practices

[@Slowly_Going_Mad]

@@alejandrodejesusrodriguezq4880 it's true that the water is moving, the point however is that this system is rather elegant in the fact that it doesn't require nearly as much complex and precisely engineered parts.

[@DazraelArianos]

No moving parts........ except for the water. Remember kids if can't be smart just lie.

[@you_just]

“Honey, why is our water bill so high this month?” “B-roll, dear.”

[@lliambunter]

Why would you be using water from the home?

[@firstnamelastname5596]

lliambunter whoosh

[@bertjesklotepino]

@@firstnamelastname5596 can you explain to me what you mean to say with Whoosh and why 3 people have shown that they like your comment? Im dutch but i dont get the joke, or the clue...... It might also be because im just stupid. And lazy. Mostly lazy. Or was it stupid? Hmm, now i doubt myself again..,....... :)

[@xxlegolas]

@@bertjesklotepino He said "whoosh" because Iliambunter did not recognize that it was a humorous comment and asked a serious question in response to it. For reference, "B-roll" is another term for supplemental footage; things like example clips, demonstrations, etc. that may be played alongside the main video. So he's telling his wife he wasted so much water because he was creating a piece of B-roll for one of his youtube videos.

[@ottotater2787]

@@lliambunter because that's the way the designer made this thing he's calling it free energy that then he's utilizing the energy supplied by the Water Company's pressure Supply device call the water pump and it has moving parts but since he didn't buy the parts and didn't put them on his property and didn't assemble anything with the parts themselves he's calling this a moving part free device. He feels he can call it that if the moving parts are a few miles away at the water treatment plant.

[@RubenKelevra]

You missed the biggest benefit of a trompe: Oil free air. You can use the compressed air directly for breathing and in pressure sprayers for paint, without a costly filter system to trap the oil. To make it practical you usually want to add a float valve to shut off the air to exhaust, if the water level rises too high to avoid water contamination of your air lines. Additionally you obviously want to connect a tank which can store more air as a buffer to avoid having the float valve shut off every time you start a air hungry tool - wearing out the valve. And usually you want a secondary valve which opens if the water level in the collection basin is dropping too low, in this case you need to vent some air or your water lines will be contaminated with air. Depending on your line layout the air might collect somewhere reducing the flow inside the line.

[@Matt-xt3ej]

Very cool.

[@ltmcolen]

It is far cheaper to buy an oil free scroll compressor than excavating a tunnel. secondly, breathing air apparatus needs a refrigerant dryer to avoid moisture condensating in the container.

[@ommurg5059]

​@@ltmcolen I mean sure but they were talking about features of a particular option, not what is the hands down the best option for a given situation. You aren't wrong about what you said just not sure how it really fits in as a counterbalance to what was said. As an addendum sure.

[@RubenKelevra]

@@ltmcolen Since the air is cooled by the water to the water temperature while beeing compressed, the air in the tank actually warms up again to the air temperature (in most cases). Therefore the air in the tank is quite dry and don't need to be additionally dried - this advantage was highlighted in the video already. You can simply throw a flex pipe in a small river down a hill. It's extremely cheap and easy to maintain - no need to dig tunnels. An Oil-Free Compressor needs the same filtering equipment than a regular one - the filter might just last a bit longer. Downsides of oil-free compressors are that they are more expensive and don't last that long.

[@ltmcolen]

@@RubenKelevra you're completely right. But I don't know if it would be easier and cheaper. For the price of such a construction you could buy many compressors man.

[@gworfish]

I'm 99% sure Grady started this channel so he could rationalize building all these trompes and flumes and things.

[@seanhayes2998]

And why not.

[@uncaboat2399]

Or maybe he would have built them anyway, then discovered he could also make some money on the side, so why not. I honestly don't know, but I imagine he is likely an engineering teacher, and nothing engages a student like building an actual device for demonstration.

[@gworfish]

@@uncaboat2399 Agreed. I did some elementary school level science teaching, and whether it was making bridges or playing with electromagnet, nothing brought more energy to the class.

[@beholdandfearme]

@@gworfish I was an elementary school student and I agree

[@beholdandfearme]

@oddjobbob he was making a joke dude. Calm the fuck down.

[@jamielacourse7578]

Somebody pinch me......science with no bullshit. No irritating over- enthusiastic narrator...good job people. This is one of few sites that satisfies my brain....

[@manaswinsingh7760]

Site?

[@Watchyn_Yarwood]

Best sciencey channel on YT!

[@stephenbinion6348]

When you mentioned no compressed air lines on phone poles I smiled. You don’t know what to look for. At the telephone company we used dry air to keep water out of the older phone cable. We had trompes to compress air. We had some smaller piston compressors out in the field. But the bigger air dryers in the phone company central office are trompes. The cool dry air is put into the paper insulated cables to keep the paper dry. These are cables that date back to before modern plastic insulation. Cables placed in the 1940’s carry data for the internet.

[@peterdarr383]

What are you like 105 ??

[@xxlegolas]

Thank you, very interesting and educative, relevant anecdote. It makes sense. I still sometimes see the cloth-shielded wire that was popular in the 40s, usually replete with moldy looking black shit.

[@petermichaelgreen]

@Bobis Vajine Seems very likely, liquid nitrogen is a convenient portable source of dry and reasonably inert gas.

[@itsv1p3r]

i love when people come in with crazy info. awesome stuff

[@stephenbinion6348]

@@petermichaelgreen Dry nitrogen is used as a short term method of pressurizing cables while you work on an air drier or have a splice open and feed it from the out end away from the drier. champ.gothamist.com/champ/gothamist/news/what-are-those-nitrogen-tanks-doing-on-nyc-sidewalks

[@cobrar85]

You could make the best April fool video ever. Every video I watch is about some cool engineering thing I've never heard of. You could make one on how electricity flows better uphill so most power plants are downhill from people and I would believe you.

[@PhilJonesIII]

Electricity does flow better uphill. Doesn't it? :)

[@cobrar85]

@@PhilJonesIII If he told me it did I would believe him!

[@swedneck]

electrons float on water, that's why it's conductive!

[@Hypercube9]

Electricity is energy just like heat, and heat rises. So of course it does! I think it was the Roman scholar Aprilius Foolius who first proposed this theorem.

[@truthspace5525]

@@Hypercube9 Heat doesn't rise.

[@ccpgmike620]

I'm a 66 YO semi retired ChE process engineer and learned something new today a Trompe. The harnessing of basic physics by earlier generations of engineers always fascinates me. Thanks!

[@absalomdraconis]

Then you may be interested to know that the ancient Greeks used something similar to run early forms of the musical organ inside their temples.

[@AutoNomades]

@@absalomdraconis Glad to know it, thanks ! Some are speaking of the use of the pyramids for energy producing! sentinelkennels.com/Research_Article_V41.html

[@franksespool8150]

Full pay, for government workers after they retire

[@wjf0ne]

@@absalomdraconis tem·ple ˈtempəl plural noun temples the flat part of either side of the head between the forehead and the ear. Were they air heads? Sorry.

[@johnstreet797]

My high school physics teacher referred to the subject as "natural philosophy". 60 years later I still appreciate him.

[@mhood8274]

Hey Grady! I am a Construction Engineering student. I am interested in heavy civil projects and right now I am studying for my F.E. exam. I have been watching your videos for years now. I find the ways you explain things to be very clear. I find your models, diagrams, examples, and animations to be always so great. Like you said, they really have gotten better as time passes too. I have even sent several of your videos to my professors to use as a teaching resource because they have triggered that "Eureka" moment for me. Your input has really nailed down critical civil engineering concepts for me. I hope you know how great of a service you provide.

[@ChrisinOSMS]

M Hood good luck on the FE. Get plenty of rest the night before, the exam is exhausting.

[@synack_]

Grady: "I could watch this all day" Grady's water bill: "please don't"

[@snorttroll4379]

Is that a thing? water bills? Here water is so abundant we do not even measure it.

[@Nutlicker683]

@@snorttroll4379 yes, you have to pay for basic necessities in America for whatever reason, I still don’t get why there’s no ubi

[@beanman009]

Nice copying

[@kaptein1247]

@@Nutlicker683 You think al the piping to your house, filtration, monitoring system and employees are all free? You can drill your own well if you think you are being robbed of your own money

[@kennandunn7533]

@@snorttroll4379 Where's "here"?

[@heckyes]

I'm obsessed with your channel. So much good stuff delivered at exactly the right speed with just enough detail.

[@angeloscoleri]

I binge this channel for hours 😊

[@stuartsutton7601]

Thanks for posting this video and using my fathers footage of the air plant at the start of your video. He worked in the Cobalt mines for 40+ years and had a lot of experience with the air plant. Dad recently passed away at 92 and knew a lot about mining and using compressed air as a power source for their tools. I was born and raised in Cobalt and worked in some of the mines as a student. As this video states, it was an inexpensive way to provide compressed air to a bunch of mines. When electric compressors became less expensive, the air plant was phased out. There were various issues with the air plant. First, it was 10-20 km from the mines, so there had to be pipelines through the bush (rugged terrain) to get it to the mines. Then the pressure as not always consistent because the more mines, the more they shared the air. Also, compressed air can be dangerous and there were situations where the pipe fittings would deteriorate (rust, rubber gaskets, etc.) and rupture. As the pipeline system aged, it became less reliable. Another issue they had at the air plant was keeping the air plant pipes clear of debris. The river would always have debris (logs, branches, dead animals, etc.) that would get through the control gates and get lodged in the piping system. So they had to shut down the plant sometimes to clear out the debris from the pipe. Another thing I remember when I went to the air plant was that the pipe heads were below the water. So the water and the air both entered the top of the pipe. The "pipe heads" were on a system that could be raised/lowered which was important for the changing height of the river feeding the plant. In the spring, during snow melt/run-off, the pipes had to be raised a bit. During the summer when the river levels lowered, the pipe heads were lowered. One thing this video does not show is what happens when the pressure builds up too much in the holding tank. If the mines could not take the compressed air fast enough, there was a release valve that would combine some water and compressed air and shoot off a huge rooster tail of water about 100 feet into the air. Many locals would make the drive down an dirt road for 15 km to watch this happen. Often there would be a rainbow effect on a sunny day as the sunlight would pass through the rooster tail water. Again, thanks to the author for using the footage of my dads video in this video.

[@scottleft3672]

You should record your views and story....posterity.

[@stuartsutton7601]

@@scottleft3672 It is not my story, it is my fathers.

[@scottleft3672]

@@stuartsutton7601 And you are your fathers son.

[@AzureFlash]

Just over a week after watching this video, I went to a presentation on the history of my region's power grid (in Quebec), and there was a mention of Ragged Chutes, a hydropneumatic plant that produced compressed air just like that, to a pressure of 125 psi. It feels like the universe just conspired to make me interested in trompes! I'll take it.

[@cageybee7221]

the trompe campaign has some very aggressive tactics.

[@MesiterSode]

1,3 million subs: "This little hobby of mine.."

[@billkammermeier]

I'm willing to be this is his fulltime job

[@evans7771]

"I'm gonna let it shine"

[@knifeninja200000]

@@evans7771 same thing came to my mind

[@wavetrav]

@@knifeninja200000 damn that also rhymed

[@CharlieMikeNS]

Hey, I'm a mining engineer, really neat to see my profession featured in a video.

[@carsonm6140]

This reminds me of an experiment I did years ago in physics class where we did the reverse process, used air blowing over a straw in water to draw the water up and out of the cup. Really cool stuff, Grady! I always look forward to your new videos.

[@stevenlynch3456]

That's called the Venturi Effect and is commonly used in Carburetors (pre fuel-injection for vehicles, but still used in smaller machines like chainsaws). The large air speed across the straw creates a lower pressure zone inside the straw, causing the water in the straw to be drawn upward to equalize the lower pressure.

[@OldGodsGames]

As an engineer, I find it really cool that someone is talking about these kinds of obscure "antiquated" design. This channel is the best.

[@graham2631]

Yes more young engineers need to understand the importance of the KISS theory.

[@interestedperson7073]

Perfect timing! I was just thinking “I need a way to aerate a small pond that doesn’t have access to grid power”. Thank you!

[@ahuddleofpenguins4842]

Hey bud watch the sarcasm you never know when you’ll need this.

[@fermitupoupon1754]

It won't work in a pond. You need some sort of drop in height to make the water flow through the trompe.

[@DeniseSkidmore]

It will work in a pond downstream of another water source, and natural ponds generally are, and non natural ponds had to get their water from somewhere.

Whatcha growin?

[@nahometesfay1112]

@@ahuddleofpenguins4842 I think they might be sincere...

[@hikaruyoroi]

I don't know what a trompe is, but I'll know in 8 minutes and 49 seconds.

[@THEBACONATOR20]

I thought it was the current US President

[@AROWAYPlaysiscool]

@THEBACONATOR20 LMAO made my day XD

[@naufalap]

nice one dude but trompe is substantially more useful

[@jeffharmed1616]

Yeah for those who have nothing better to do but game the system

[@MrAranton]

@@THEBACONATOR20 The french word "se tromper" means "to err", so you're part right.

[@graham2631]

Made my day l learned something new before l finished my coffee. A engineer who demonstrates without a blackboard instead actually builds something priceless.

[@waylonwest4893]

Thank you for allowing someone like me working in the hospital basement with no guidance understand what is actually happening inside of all the machinery and some times your videos help overt full loss of power. So thank you

[@you_just]

“Air compressors had a major disadvantage to the mining professional of the early 20th century: they didn’t exist.”

[@tbates1987]

This is the one thing i find a major issue with, they had air compressors as far back as the 1870s and possibly the 1850s ( I am not going though my archive right this min to check). They were large steam driven equipment, but they did exist and were in common use!

[@cindytepper8878]

Westinghouse invented the air brake system in 1869, so compressors had to predate that

[@christopherg2347]

@@tbates1987 There is no real difference between "it does not exist" and "I can not afford to use it". If it only works after you hit a specific scale or up to a specific scale, that is a ton of applications for wich it does not exist. A steam-anything neeeds water. And also something to burn and a steam pressure vessel way more expensive then some piping. Especially a century or 2 ago. This thing only needs water and some pipes.

[@christopherg2347]

@@cindytepper8878 Different scale, different viable solutions. That is a simple truth of engineering. And you can see that all over nature: kzbin.info/www/bejne/nGiuhJmgq5mCp5I kzbin.info/www/bejne/g4a6hnucYtetodU

[@sammyd7857]

They were too expensive more like it

[@kwasongggg]

I’m currently a 1st year Civil Engineering students and this channel is what i call home, i just enjoy how amazing engineers are. Thank you for uploading!!!

[@General12th]

How's your 2nd year of civil engineering?

[@BFLmouse]

The Peterborough Lift Lock on the Trent-Severn waterway, also in Ontario, Canada was originally built with a trompe to supply compressed air to run all of the auxilary equipment needed to operate the lock. The system operated that way from opening in 1904 until an electric air compressor was installed in the 1980s

[@ShumaiAxeman]

Oh cool! I just moved here last year. I'll have to go check out the lift locks again now that I know this. Thanks for the info dude!

[@gnikola2013]

This feels somewhat sad. Having such an ingenious mechanism to provide this historical place of compresed air and having being using it for almost a century, it suddenly gets replaced by a definitely more efficient, but at the same time less complex or even interesting, standard electric compressor. The end of an era. Guess progress always has some cons.

[@mirskym]

The lift lock itself is super cool! I rented a houseboat about 15 years ago and went down the Trent-Severn system through the locks. Last stop before turning back was the lift lock.

[@kicksledkid]

I loved the lift locks as a kid! Them and the big chute marine railway are really cool ways of getting around terrain!

[@b43xoit]

What was the rationale for downgrading to electric?

[@steelbarz]

My home town is Cobalt Ontario, I have been to whats left of Ragged Chutes many times buy never got to see it vent. Some Kids burned down the pump house when I was a kid and the video that you show in your intro hasn't happened since the 60's to my knowledge.. So thank you I always wondered what it looked like and now you showed me video in your intro. Cobalt is an amazing town. We would explore the old mines and tunnels as a kid and the pipes from ragged chutes are everywhere in the bush all grown over from a 100 years ago the main lines are over 12 in in diameter. So much power was always amazing to me..

[@dralexmclean]

I'm a retired engineer who grew up pretty close to Cobalt Ontario, great explanation, love your stuff, thanks for posting

[@saqibmudabbar]

Since you really read all comments I wanna say something here. You're awesome and your videos are amazing!

[@MistSoalar]

"Make Air Great Again" - Trompe 2020

[@bertjesklotepino]

@@yukon2263 what joke? He could have said it. Just like Bush has said ridiculous things, so has this one. But Bush still is the winner in this race. Not even Trump will beat him.

[@matthewray6008]

I feel like there is a windbag joke in here somewhere, but its late and I'm lazy.

[@xxlegolas]

@@bertjesklotepino Fool me once . . . can't... can't get fooled again.

[@6rowmafia943]

Make Compressed Air Great Again. Trompe 2020

[@xtreme7104]

"MAKE CORONAVIRUS GREAT AGAIN"- TRUMP 2020

[@leustad]

A friend of mine was talking about this exact thing today and I was wondering how he suddenly knew all of this. I just confirmed that he watched you and blasted us with new cool info... haha

[@tomkelly8827]

What I learned from this video is that at least one American noticed that we exist here in Canada and we also have done some amazing things over the years! Thanks for noticing. Also I live in Ontario, about 5 hours south of Cobalt and I never knew about this, this is exciting! Thanks for sharing! It makes me wonder why we don't make compressed air at more hydroelectric plants. It seems like the air could be collected after running the water through the turbines to make each dam that much more useful

[@doujinflip]

Probably because you don't want aerated water flowing through the turbines which are near the bottom of the dam, and by the time you inject air into it afterward there's not much head left for the compression.

[@MineExploration]

Over here in the North of England, we are lucky enough to have a giant version of this in our Abandoned Nenthead Mine - with a 328ft deep underground shaft that provided enough compressed air to power a whole host of equipment over a large array of levels that was fed from a series of lakes on the moor above. Thanks for the video, good work!

[@gregwarner3753]

I ran across this idea years ago when I was I evolved in small hydroelectric redevelopment. I think the large installation was also in Quebec Canada. It developed over 10,000 Hp at 150 psi. The compressed air was carried in large pipes to the mines more than a mile away. The system was self regulating. I tried to get a grant to use one powered by a low head hydro site to provide cool presjuurized air to feed a gas turbine powered electric generator. The reviewer did not understand the pressure was determined by the depth of the reservoir not the drop at the dam.

[@zwz.zdenek]

Please fix that auto-correct feature. Other than that, I also hate it when key people are dumber than me.

[@xxlegolas]

Greg, how does that work? The depth of the reservoir behind the dam determines the pressure in the system? I thought the pressure mainly came from the drop turning potential energy into kinetic.

[@עידושוהם-ח5ר]

Nice! What is the water flow (gpm) ? .What is the power output you were able to generate (in watts) from the data you specified (10,000 Hp at 150 psi)?.

[@Hyratel]

The depth of inlet head has to be more than the outlet, but the outlet head is the back pressure and liquid pressure (and by extension, your trompe's idle air pressure) determined by the vertical leg of the outlet.

[@glitchinthematrix5761]

Thats the thought i had. Turbine after this brilliant, yet so simple compressor. I was thinking the water spilling out in the demo, which in full scale is probably diverted back to its source. Could be run through a turbine, before being returned. But i like your version better. Using the compressed air in the turbine. In the right climate this could save someone a lot of money.

[@enja001]

Its people like you who have influenced me going into mechanical engineering after being out of school for 10yrs. Love your videos

[@johnbaines9580]

What is a trompe? Tuesday morning: Er ... a French fart? Tuesday afternoon: Why, it's a water-powered air compressor! Cheers Grady!

[@MonkeyJedi99]

Well, a fart is kind of the output of a "water"-powered air compressor...

[@andymckee53]

What is a trompe? It’s when the US president opens his mouth and all that comes out of it is foul air.

[@b43xoit]

Alors .... vous avez vous trompé!

[@techobsessed1]

Both depend on entrained air. Ok, yeah, farts can also result from fermentation, still...

[@scythal]

@@andymckee53 Sadly that US president is not a trompe, because all he talks about is hot air. Now if he actually did get things done, he would've probably been a trompe.

[@danielmcnulty8736]

Best channel on You Tube. I waste exactly zero time here. I always learn something new, and I love it.

[@luckyday5307]

Bill Mollison talked about trompes in his Permaculture courses as if they were all the rage at one point, he said the whole city of Paris was running on compressed air , and talked about cars and refrigeration also being a mainstay use. he alleged that at one point, as fossil fuel was making inroads with internal combustion the ice industry put on a push to remove references to trompes from libraries and the like until it became nearly impossible to find any information. He also mentioned it's use in Roman times, although there was an inability to seal and pressurize like today, it was modestly used in places, esp Andalusian mining. Thanks for making this information more publicly available.

[@Omicron91]

Great video, the quality of your videos has, indeed, improved over the years. Always excited to see a new one pop up :)

[@FuncleChuck]

Man I wish I’d had this info while I was still a student. It’s so motivating to learn about the amazing tools of years gone by.

[@Ksilisab]

Yo Grady, great video, but I just gotta say that I am left slightly unsatisfied for one reason. You mentioned how this trompe was made a long time ago in for this one mine, but you never went into detail on how it worked and how much compressed air it produced. I was pretty curious about the scale of this old time air compressor.

[@uhhhhh262]

He’s demonstrated the engineering, if you’re interested in its history then you should look in to it further and maybe leave a comment with extra info. It’s a good way of really learning about something

[@eatsoup1172]

Yeah i agree,i can't really understand how did the energy relief system looked like..?Did they fill some kind of tanks and sold them to the mine,or was it like a pipe to the mine with the pressured air inside..?

[@keegan707]

I think that little tidbit would make a good addition.

[@eatsoup1172]

@@uhhhhh262 yeah,but usually he allways shows the actual scaled machines or structures in question. Like i get the principle,but it's hard to comprehend how would it look like in full scale. But i guess there probably are none left.

[@-vermin-]

Have a look at this video: kzbin.info/www/bejne/i6W8fYmCoLysfcU

[@despizedicon]

You have to the most tolerable smart guy on you tube I've seen. I am trying my best at a good compliment here. Thanks for the content.

[@bobbyrp9881]

I don't have any suggestions but I do like to appreciate your commitment to show us a very informative video. Thank you.

[@Nathan.Klemstein]

I just love this channel all these things are interesting and makes education fun!

[@lanhikari7667]

"I can watch this all day" Water bills intensifies*

[@_egghead]

What if you recycle the water? Does it mean its infinite energy?

[@alexreeve]

like an extension cord plugged into itself? ;)

[@noel9817]

Like a power bank connected to itself?

[@fuseteam]

@@_egghead recycling the water would be great, but no infinite energy the best you could do is store it in a another tank

[@mylesmcarthur642]

@@fuseteam you could use a screw to move it back up.

[@Santibag]

As a mechanical engineering lover and student, I loved this video. Thank you.

[@carlthor91]

I first found out about the trompe, by reading Peel's mining series at the first mine I worked at in the late 70's, now retired, I look through old book shops for copies, long delayed by Covid! Best wishes from the far North.

[@Ghost812many]

Vacuum doesn't suck, air pushes. The device causes nothing more than for the atmosphere to compress itself, and that makes it even more amazing to me! Great vid!

[@blunderwithbigs]

That was very helpful. I’ve been wanting to add more air to my hydroponic system with out buying more air pumps and stones. Subscribing to your channel was the best. Thank you.

[@fermitupoupon1754]

If all you need is aeration, you may want to consider an airlift as a circulation pump in your main reservoir/sump. Though depending on the type of hydroponics you run, you could power the trompe with the flow of the main return line and use the air it generates to power an airlift.

[@geoyoshinaka5251]

What an ingenious device! I am amazed and humbled by the simplicity of this invention!!! Thank you so much for enlightening us :)

[@aaronrogers2822]

My favourite channel, answers so many questions that I didn't even know I had!

[@75randomdan75]

Its a nice change to see someone adversising something they seem to genuinely use!

[@Fabric445-2]

Been looking for a large scale source of compressed air for a steampunk world and this is the best one I've found, thank you.

[@murraystewartj]

Me: (Brings a bunch of clear plastic piping and fittings into the house). My wife: What's that for? Me: I'm building a trompe. My wife: What's that? Is it for finally finishing the bathroom? Me: (Not making eye contact) Welll... yes dear.

[@slycooper04]

($500 water bill later) The wife: what the frick!?!?!?

[@murraystewartj]

@@slycooper04 Damn! It's details like this that keep me from having any fun.

[@MidnightSt]

"Well... not exactly *finishing* it yet, but... do you remember how you were saying that it would be awesome to have a bubble bath? So i thought, yeah, that would be awesome. And it would be even more awesome if I could make the bubble bath to power our silver mine! So..."

[@sebastianmcintosh5695]

one year later and i hope op got the bathroom finished

[@becauseimafan]

@@sebastianmcintosh5695 😂😂 Hope so!

[@XSpamDragonX]

The second most interesting part of this video is how the video compression algorithm really struggles with the turbulant water air mixture.

[@musaran2]

Other good compression killers : Waves in water, waves from wind on a field, fast clouds. Any massive movements that are not simple perspective change, really.

[@johnbenjamin7047]

I love your work! I am a final year mechanical engineering student and these kinda practical thinking is what inspired me to pursue this degree ! Keep doing what you do !

[@chadcadsonvii5258]

About 9 years ago I did some research on trompes for use in off grid living. It was so hard to find any info, now there are videos and descriptions everywhere. 😁

[@MegaXGA]

Im a student engineer and i just love your videos. Keep teaching the masses

[@MicMan2710]

It's amazing how much effort he puts into his videos. It really shows

[@robertbilling6266]

Very interesting, thanks. Incidentally there is something which occurs naturally in the rocks of the island of Sark in the channel islands. It's known as a "souffleur" and it can compress air in a fault in the rocks, then eject a slug of seawater driven by compressed air.

[@justarandomweeb3220]

Modern problems require 1920s solution

[@umbraemilitos]

"That's a lot of solutions."

[@brianhurt3801]

This show is great ,the narrator is great , content always great, the guy is genius , engineering of today and yesterday's ideas , then skill share just takes it all to brand new levels , I never gave this much positive for no program

[@wearenotamused6455]

When I first saw the title I thought it was a video about Trombe wall designs which utilize thermal mass heat sinks... But now I know something else... Thank you for enlightening me and many others.

[@HeavyboxesDIYMaster]

This is perfect for the gold mine I’m digging in my backyard.

[@xxlegolas]

@ Both of you have goals and I love both of them!

[@nrdesign1991]

You caught me red-handed with that vocabulary - I'm currently learning this stuff (thermodynamics and fluid dynamics) for an exam in university.

[@TonyRule]

University? In what country? I'm fairly sure I learned the meaning of the terms isothermic and adiabatic at New Zealand high school as part of physics in year 12, but I could just be remembering wrong - it was quite a long time ago. I certainly learned endothermic and exothermic at high school chemistry though.

[@nrdesign1991]

@@TonyRule A technical university in Germany. It's a whole course dedicated to thermodynamics. Not just those two changes of state, but also Isochoric, polytropic, isobaric. Then the application to power, work, torque, various circular processes (not sure if this is the correct translation?) for turbines and engines, and more. Then the whole part about fluidic dynamics which I havent really touched yet while practicing for the exam (one of many, next week, and the week after)

[@Rhannmah]

What a great and simple device! I'm currently trying to design a centrifugal trompe, harnessing rotational potential instead of gravitational potential for a compact air compressor with no moving parts. (except the rotating piece) This video is a big help!

[@gus473]

Good luck with that project! 👍

[@AutoNomades]

Nice ! i'm curious to see ! There is (at least) an existing one low head with vortex that let the fish come back to the spring. I guess you can see it on Bryan White channel if i remember good

[@Ig88776]

I've been looking for practical information on a trompe pump ever since I heared the late Bill Mollison talk about it briefly in a lecture... Thank you so much! This technology should be widely used and available🙏❤️

[@phantomroller]

Reading the comments, I think you missed one of the greatest economic advantages of the Trompe compressor to thes mines ( I say mines becuase Charles Hadwick Taylor built a large scale Trompe Compressoriat the Victoria Mine in the upper penninsula of Michigan in 1904 before building the even larger one at Ragged Chutes in canada (his homeland)) . Anyway, you missed the fact that all the Mining equipment of the day and most of the equipment in place was steam powered, and therefore very easily run on compressed air, no coal needed. GREAT VIDEO by the way, absolutely LOVE the clear tube version!!! I've always found it amazing how few people know of this, SOO ELEGANT!! Scott

[@deusexaethera]

"Compress Air With No Moving Parts!" The water appears to be moving quite vigorously, sir.

[@texasgonzo67]

Ya beat me to it. Yup, water IS in motion, hence "moving" as a part of the apparatus 👍

[@tharqal2764]

In engineering you typically say "moving parts" when some piece grinds against another one, thereby needing lubrication. i.e. a bending part isn't a moving part either, even though it moves.

[@EctoMorpheus]

@@tharqal2764 still, a bending part will also wear down over time and need maintenance / replacement, no? Much faster than any pipe containing a non-corrosive fluid would

[@tharqal2764]

@@EctoMorpheus Eventually yes but as long as it's bending below its plastic deforming limits, it can hold for a very long time. This is just an engineering convention. Like a bridge bends every time a truck drives over it. But we still say that a bridge has no moving parts (unless it's a drawbridge of course). As opposed to like a regular motor driven water pump where you forget to fill up the lubrication and the device may get bricked after only hours.

[@deusexaethera]

@@tharqal2764: Speaking as an engineer, "moving parts" means "parts that are moving". It doesn't matter if the parts are solid or not. Oil or water is absolutely a "part" in a hydraulic system.

[@Killianwsh]

Great video! :) You mentioned that these types of compressed air plants are gaining renewed interest. Do you know of any currently being or slated to be built? Would love to learn how modern design and engineering have improved even farther on this impressive invention. With no moving parts in the compression side, minimal surface footprint, and no consumed fuel needs (toxic, radioactive, or otherwise) it would seem to be an excellent choice for power generation anywhere in the world there's a reasonable source of flowing water. I'd think it would be much better than even conventional hydro-electric dams, as it would virtually eliminate a number of the issues of using water to directly power turbines. Perhaps in a future video you might compare and contrast the two for efficiency vs cost etc from an engineering stand point?

[@Tmanaz480]

Stoners everywhere are now figuring out how to make a bong out of this.

[@djc4799]

Hydroponic delivery of aerated water actually www.amazon.com/Aromatic-Cannabis-Cultivation-Growers-Guide-ebook/dp/B01DWURSAE

[@JZH10000]

@@djc4799 nah you could definitely figure out how to make some futuristic gravity bong

[@alexreeve]

thats easy just put a chillum at the intake and connect a breathing mask to the exhaust, there you go.. pressurized, cooled smoke.. :D

[@eideticex]

One of the best bongs I made when I was a crazy teenager was based on this mechanism. It was built from a super soaker tank, while it was unused everything was stationary but as soon as you began to suck on the tube the pressure change would start a process of compression and expansion inside the reservoir. The cycle only lasted a few seconds before it lost enough energy to settle back into equilibrium but that's all you needed to "take a hit". The result was an incredibly low effort bong that delivered cool smoke. What ultimately killed the thing was that it condensed resin out of the smoke so rapidly that I had to use an old dull drill bit to clean it out, as you can imagine doing that slowly carved away the plastic around the tank's outlet until it sprung leaks that rendered it useless as a bong.

[@justinpyle3415]

This is literally already a bong. Just insert a bowl as the air inlet and lit it. Smoke will collect in the pressure chamber, you release the valve holding it in and the pressureized smoke releases itself

[@ronblack7870]

this is the 3rd video i have watched about trompe's and i finally understand because you explain the outlet pipe is what maintains the pressure on the air. the other guys didn't make that point.

[@claytonsadventures7607]

I loved hearing a little bit of engineering history from a place near and dear to my heart. Cobalt, Ontario, Canada is one of the most interesting places someone can visit.

[@while.coyote]

"no moving parts" water: am I a joke to you?

[@ChucksSEADnDEAD]

It's not a part, it's "working fluid".

[@ottotater2787]

@@ChucksSEADnDEAD water pressure created by?

[@iain3713]

Otto Tater the sun heating it and bringing it to higher ground?

[@WeighedWilson]

@@ottotater2787 water pressure created by gravity if sourced by a stream

[@listtamaru]

Copyright at the end of the video still says 2019

[@davidbergmann8948]

Well the copyright is for 2019. He's not required to change it to 2020 this year and to 2021 next year. 🍄

[@PracticalEngineeringChannel]

Whoops! Well in my defense, most of the production did happen last year!

[@uss_04]

That’s so *Last Decade*

[@PanzerDave]

@@uss_04 technically the new decade doesn't start until 2021! It is the same reason whey 1999 to 2000 was not the start of the new millennium. There was no year zero so from year one to 1000 was the first millennium AD, year 1001 through 2000 was the second millennium AD. Likewise, the decades run from 1 through 10, 11 through 20, and so on.

[@kruks]

@@PanzerDave - Pedantically speaking, you mean. There may have been no year 0, but people have been starting their colloquial decades on year X0 for centuries. Almost no one celebrated the millenia in 2001; even less are willing to entertain the decade starting in 2021. Pointing out the lack of year 0 is just going against the grain.

[@Its_mr_kai]

Some channels make you want to get a new gadget. This channel makes you want a river.

[@jimtheedcguy4313]

I had no idea you were a fellow Texan only an hour and a half away from me! We definitely love our ac in the summer, can't live without it!

[@jpete5977]

I certainly haven't watched all of your content, but I have yet to watch a video that didn't completely fascinate me. Not to mention, so many of them are actually useful too. Thanks for your efforts.

[@killernat1234]

It took me a while to wonder what airlines had to do with compressed air, then I realised 🤦‍♂️

[@mersilvaureus1525]

I see that KZbin play button in the background there~

[@Lessinath]

I don't know if you still read all your comments but if you do, I hope you had a great new year's and these videos are both entertaining and informative. Thanks.

[@samuels646]

Grady, this isn't a critique i just wanted to let you know that I love your videos. Being able to use your videos to explain things to my friends is something I love to do. Keep up the inquisitive attitude and the phenomenal video quality considering your budget. I've been watching your videos since your garduino video and it makes my day when I see a new video from you recommended to me by youtube.

[@saisantoshyakkali2498]

I would love to see you collaborate with crash course. The civil engineering course is already completed, but I'm sure you can fill with any of your expertise. Great content, thank you

[@trcostan]

The clear pipe industry has seen a revival of sorts as of late!

[@gus473]

Wish it was easier to find (and less expensive to buy)! 🤷‍♂️

[@AutoNomades]

@@gus473 I was wondering where did you find theses clear piping? What was the price? Thanks a lot !

[@alexander-kirk]

I have grown to love that EDMish intro over the past year. My neurons get all excited that they're about to be fed yummy stuff.

[@Dwonis]

I'm mostly watching you on Nebula now, but I just have say that these videos are my new happy place! 🌟😻

[@surferdude4487]

I saw a model of this at the Ontario Science Center when I was a kid. I didn't understand how it worked until today. Thank-you.

[@jeffharmed1616]

Looking at the water exiting the system, only a small percentage of the energy is captured. I think that including a Venturi would improve efficiency

[@gus473]

Was wondering about that too! Grady....? 🤔

[@JackSwatman]

How would a Venturi be used? Just curious

[@PracticalEngineeringChannel]

Not sure what you mean. A venturi would just cause additional losses in the flow from expansion/contraction.

[@jeffharmed1616]

A Venturi converts potential energy to kinetic energy in a more efficient way than your straight pipe system. And since your head of water coming out is wasted energy, you have all to gain.

[@jeffharmed1616]

Pinch the plastic pipe with a jubilee clip in boiling water so as to create a contraction just before the air inlet.

[@JonDoucette101]

This seems like the principals of this are shared with the design of a ram pump. It also has a pressure vessel.

[@isaackarjala7916]

it's basically just a backwards airlift pump

[@adamblakeslee5301]

I wonder if you could use this for air conditioning like a drier version of the Swamp Cooler.

[@mattp1337]

I'm very curious about this, too. And you'd only need very modest pressures, so a good design might be an easy, cheap and safe DIY build.

[@b43xoit]

Maybe in combination with an Air Cycle Machine?

[@adamblakeslee5301]

​@@b43xoit What, like a traditional AC? I mean, you could use the water to soak up the compressor heat. Or the compressed air to cool the coils even further before decompressing. Or both. Gah, this is getting complicated.

[@b43xoit]

@@adamblakeslee5301 Not like traditional AC. Like the AC on an airliner. It runs on compressed air. en.wikipedia.org/wiki/Air_cycle_machine

[@Jacks_Suffocating_Nihilism]

Absolutely. Any source of compressed gas which is allowed to undergo adiabatic expansion will cool. I don't know what a Swamp Cooler is but trompe air is probably very humid.

[@robertking7269]

Thanks I could watch your shows all day. Keep up the good work. You can rarely be the best but you can be the better you.

[@shngsam8777]

this is fascinating! the first part of the trompe, is just like reverse of sponge filter we have in aquarium, where the trompe use water to move air and aquarium sponge filter use air to move water

[@myopiniondoesntmatter7068]

Don't mind me, just here for the chill background tunes.

[@desdill]

I liked the vid, but you mentioned it’s an energy transfer system. A thing that could help would be describing the loss of energy between these systems (even if it’s free)

[@МихайлоСєльський]

I'd say the most problem here is not the efficiency (which is still important sure), but rather energy density. Both potential energy of water over height and compressed gas have extremely low energy density.

[@desdill]

Михайло Сєльський am example of an awesome fact that could have been included

[@KingHalbatorix]

When a mommy trumpet and a daddy trombone love each other?

[@mtnjr]

This channel is like a clear pipe info-mercial

[@arobertpetersen]

Sir, I’m fascinated with your topics and their presentations. The background music helps that it’s not obnoxious and the volume is tolerable. And, you’re a fellow San Antonioan; could have sworn you were Canadian.

[@DenzCasuela]

If I install that to our water supply and attach a tank, we basically have free compressed air

[@b43xoit]

It's not free, because there has to be working head.

[@austin503]

"this video is sponsored by" OH NO "skillshare" Oh, phew

[@jtcp27031]

Raid shadow legends, my favorite mobile game!

[@sebastianyu5383]

KZbin gives me loud af ads fro the dumbest shows; like KZbin do you understand the stuff I actually watch

[@macmurfy2jka]

Sebastian Yu no, no it obviously doesn’t. And that’s in spite of the amazing and creepily accurate viewer profiles that they are making of you. Pretty amazing actually.

[@vaxghost]

Forgive me if this has already been mentioned, but this is exactly how the ancient Greek hydraulis, the forerunner of the pipe organ, worked. Great video!

[@paksaoify]

I first heard about trompes in a permaculture video I'm glad your spreading the word.