I guess I missed out

🔴 What Is Islam? ⚠️ 🔴 Islam is not just another religion. 🔵 It is the same message preached by Moses, Jesus and Abraham. 🔴 Islam literally means ‘submission to God’ and it teaches us to have a direct relationship with God. 🔵 It reminds us that since God created us, no one should be worshipped except God alone. 🔴 It also teaches that God is nothing like a human being or like anything that we can imagine. 🌍 The concept of God is summarized in the Quran as: 📖 { “Say, He is God, the One. God, the Absolute. He does not give birth, nor was He born, and there is nothing like Him.”} (Quran 112:1-4)[4] 📚 🔴 Becoming a Muslim is not turning your back to Jesus. 🔵 Rather it’s going back to the original teachings of Jesus and obeying him.

What Is Islam? Islam is not just another religion. It is the same message preached by Moses, Jesus and Abraham. Islam literally means ‘submission to God’ and it teaches us to have a direct relationship with God. It reminds us that since God created us, no one should be worshipped except God alone. It also teaches that God is nothing like a human being or like anything that we can imagine. The concept of God is summarized in the Quran as: { “Say, He is God, the One. God, the Absolute. He does not give birth, nor was He born, and there is nothing like Him.”} (Quran 112:1-4) Becoming a Muslim is not turning your back to Jesus. Rather it’s going back to the original teachings of Jesus and obeying him

at least a good new song to play on the timpani

Sounds like the intro to an 80s horror movie

Same as a non engineer I understand the P V chart a bit better now

It's deeper than that, sadly. Our IQ in the west has been falling. Even conversations between average people, from this time period, are at a different level than most present day conversations.

：０@@_SimpleSam

I do agree .

Those are the times when people care about public education.

Xylius Schaaij I thought they cared about the public and aired this on TV. That would be nice, maybe then they would not elect Trump. Too late anyway.

Xylius Schaaij Knowing science leads to.

I have far more scientific and mechanical knowledge and prowess than 98% of the population and am a registered genius with the triple 9 society and a former member of MENSA. I voted for Trump and will likely vote for Trump again.

lack of understanding ... a stirling engine is a heat pump ... literally ... meaning it is a differential heat engine ... it needs a difference in temperature to work ... and it is the analog version of a pelltier device ... and like the pelltier device it is also reversible ... meaning it can heat OR cool stuff

If a minster could do with probably a very low income, how rich are we today to go even further?

At 40% efficient its quite a bit more efficient than most diesel engines today and definitely most gasoline. More interesting, however, is its ability to cleanly run and burn any fuel, gaseous, liquid, or solid.

NASA made some and published it in the 90's. I just watched it here on KZfaq. I just emailed them asking for a PDF of the blueprints they used.

@@m.w.2098 Did you received any reply from NASA to your blueprints demand?

The efficiency of the Sterling cycle is misleading, to say the least. Where gasoline and diesel engines gain efficiency with load, Sterling engines lose efficiency with load... due to heat soak on the cold side of the chamber. It's too bad that engine is so mass intensive... in theory, it would work great as a marine engine, as the water could be used to cool the condensing side of the chamber.

Br!an Delta V - most modern diesels operate at 50-60% efficiency. Several gasoline engines have seen 40%+ efficiency, thanks to Atkinson cycle designs... but only under peak load. The new Koenigsegg "Freevalve" engine could see part throttle efficiencies raised, as well... with it's independent control of valve lift/duration, the valve timing can be tailored to facilitate valve operated throttle modulation. This would allow not only better low-load throttle control, but also provide vastly improved transitioning through throttle response, as the peak part-throttle vacuum would only be exerted on the cylinder/combustion chamber (as opposed to the entire intake volume)... even better than ITB injection, runner valves, etc..

they are exactly the same principle ... one is analog (striling) the other digital (pelltier) ... and BOTH can go either way

Helium is safer ... and easier to purchase ... hydrogen has a draw back ... add a spark or flame ... to a leaky system and POOF ... one engine down ...

aaQ

what

Nobody was showing films as advanced as this in elementary school. Anywhere. Ever.

ive seen one YT creator demonstrate this tech on a small scale already. Zero emissions, unlimited supply... I wonder what could possibly be preventing the scaled up adoption of this century plus old technology en mass? [wink]

kzfaq.info/get/bejne/rK2Uh5yomdvGfJc.html

ThePataks that will slow it down alot.. make way more drag. hydrogen is your best bet because it has a super high thermal conductivity and very low freezing temps.

ThePataks it also is a lighter then air gas so it makes it function much smoother

​@@carolynmmitchell2240 Hydrogen is a dumb idea, it's highly flammable, you have to use inert gases in sterlings like helium which has good thermal conductivity but won't blow up your engine like hydrogen would.

It wont blow if you keep oxigen away. It can not burn without oxigen remember?

@@carolynmmitchell2240 helium is safer and is very close to hydrogen in thermal conductivity ... and easier to get

they dont want people making their own liquid nitrogen hydrogen and oxygen ... I guess ... because that is PART II the other side of the engine ... getting VERY cold ... like 40Kelvin ... or near to -270c

Jeffrey314159 Looks like the 60's to me

Stirling engines have been constructed out of glass, so utilization of ceramic materials is definitely on the table. What needs to however be addressed is elimination of vibration when working with such brittle materials. Of course, the more hard the material you work with is and the more resistant it is to heat deformation, the greater precision you can maintain when it comes to part tolerances. Metal, from my perspective, does not seem to be the optimal substance for many applications on a thermal difference engine.

It's better than steam locomotives, however, most diesel engines have about 40-45% engine efficiency, so all the sterling has going for it is it's cleanliness.

Much better than the gasoline internal combustion engine which is often about 25% to about 38% for the most efficient modern engines (at the time of this video, more between 10% to 20%). Not as good as some electrical motors however.. but damn, I am impressed, especially for the fridge.

@@Shunteration diesel has 25% efficiency when its new.Gasoline has 15-18%.Steam turbines have 40% efficiency but can go up to 60 in the future.Thats why all power plants use steam turbines and not diesels.

@@mihaiilie8808 "Steam turbines have 40% efficiency but can go up to 60 in the future.Thats why all power plants use steam turbines and not diesels." You're not factoring in the loss of efficiency for the source of steam. A turbine may have that efficiency, but it requires outside energy to move it.

given that at the end of 2019 solar panels have between 20~22% efficiency 40% is indeed already great. However Stirling engines have the potential to get closer to Carnot engine efficiency ie with modern materials and tech it might grow in the future to 50~60%. However for present days the more practical question would be to lower the costs of building such a Stirling engine. Because if you hook it to Concentrated Solar Power (CSP) dish you easily can afford losing some light energy (given that it's free ;)) and if you're living in a northern or cloudier climates simply by using larger CSP dish you can easily compensate the lower light intensity. Also use of parabolic mirrors is not mandatory since you don't need pin-point precision in the concentrated light cone - as long as it falls inside the heater's chamber it'll be fine - so your CSP dish can be done by faceted mirrors. So I guess the main difficulties with such engine construction would be the seals - to preserve the working gas pressure (and to avoid leaking dangerous hydrogen or precious helium), and the materials that must withstand high temperatures (around the hot-chamber that is). That last part is important since heat-engines theoretical efficiency is improved by having greater thermal differential between the hot & cold chambers. And I guess optimizing the heat-regenerator.

These would be great to place in really cold places like the polar regions or places with high geo thermal activity.

Correct - a material that is a poor heat conductor will do the best job. Just make sure that the melting point of the material is higher than whatever temperature you intend the tube to go to. Whether or not you should leave it hollow depends on factors such as the strength of the material and again the heat conduction. While air is a poor conductor it doesn't add any structural strength. Good luck with your project. One of my most memorable moments from college was when we built a miniature Stirling engine-run car. It ran entirely on the difference of temperature between water ice and the room. For some added efficiency you could put dry ice on it too. I wish I still had that thing. If I have the time I'll build one for myself this summer.

John Bought one on on Ebay, the one with the 4 led's generator, works like a charm, made one myself BUT the bought one has a low friction power piston WITH compression, mine has insufficient compression so does not work,obviously this is the hardest part to manufacture but I wont give up, am looking for a suitable material, tried running the last one in a smooth brass tube, the bought one looks like a plastic one on metal running in a glass tube. my piston was made of "Knead it" epoxy putty which I rubbed graphite powder into before it set on the outside and squashed it into a greased [but wiped] cylinder not a success unfortunately.

it is close fit at a pint in the middle

NOBOX7 Thanks, I will keep trying, I down loaded the vague plan of the one used to drive the Multi stop van at Langley AFB, very sophisticated engine and there is a lot of info to read but the diagram is hard to decipher. Have a look at it on youtube.A contributor to youtube has given the website.

john brown That sounds like a lot of fun. Make sure you upload a video and reply here if you're successful. I'd be really interested in seeing it. I'm way too swamped at work to get anything done on my projects right now. I'm currently in the process of scavenging some old electronics to build my own spot welder.

I'm pretty sure most people don't understand it because it's very hard to grasp in just one video. It personally took me a few weeks before I sort of understood what was going on principally. I have done an internship at this company last year and now again, so I sort of follow whats going on. Still I need to watch this video because I forgot the details of the principles lol. I am gonna try to explain it to you, because it also helps me understanding it better. Please tell me if you don't understand parts, because I learn a lot from it too The displacer makes a new chamber. Now you have the crank case area (the big one of the right), the middle chamber and the far left chamber. The middle and far left chambers have very similar dimensions. Especially compared to the crank case area, which is much bigger. As far as I know, the displacer is used to make sure that the two different sides of the cilinder wall don't need to change in temperature. Now you have a 'hot' chamber and a 'cold' chamber, where energy is retained and not constantly changing. Now the greatest affector of efficiency is the circulating work gas between these two chambers, that take the heat and cold of the chambers to the other. The regenerator serves as a sort of 'energy buffer', that 'stores' cold or heat depending on the phase of the cycle. This is to make sure that hot and cold gas don't change the temperature as much of the opposite chambers, therefore increasing efficiency. When applied in cryogenerators (what the company does), the functionality of the two chambers are switched around, making the far left chamber very cold. A tube filled with for example hydrogen or nitrogen gas passes this cold chamber, resulting in liquifying the gasses. (This is a different tube than the one they use in the video!!!!) Effectively, the cryogenerators are Stirling engines working in the opposite way. The crankshaft is powered by an external electrical motor, because creating this 'cold' of course requires power.

What regenerator exactly is?

Djalma Antonio o que?

Well.. You caught me😂😂

#LifeHack

You're the MVP.

Thank you so much! Interesting as fuck, our life speed is 50% higher than 50 years ago!

+AlbatrossDude Or our attention span is half as much as back then :v

There is actually no compression, there instead is contraction of the working gas when it is cooled, which creates a vacuum. When the gas is heated the gas expands and pushes against the piston and when the gas is cooled, the gas contracts and creates a vacuum and draws the power piston back into the cylinder.

the hot helium from the hot chamber goes through the regenerator, a metal sponge. The sponge heats up, while the gas cools down. When the cold gas enters the cold chamber, it shrinks, thereby pulling the power piston and generating movement. Since it has been pre-cooled by the regenerator, it shrinks more than without the regenerator. Then by the movement of the flywheel it is pushed back again through the regenerator, which is still warm from before. The cool gas is heated by the regenerator before entering the hot chamber and regenerator is cooled by it, ready to cool the gas again next time around. And the pre-heated gas in the hot chamber now expands more than if it wasn't pre-heated, thereby again pushing on the power piston and generating movement for you to use.

Thanks for answer, i finally understand the movement. But i've another doubt now: the cold chamber reachs cryogenic temperatures? How does the piston to continue the movement? steel hasn't problem at that temperature? Thanks

no, steel doesn't have problem with that.. also, there is only helium on the inside of the piston, no frost, since helium would take much much lower temperatures to freeze. I'm not sure how low this device can cool it, the air liquefication seems a bit extreme. But I've seen youtubers making hobby stirling engines doing -40 celsius no problem.

you seem pretty knowledgeable zzanzare, could you tell me 2 things if you dont mind? 1. how is the metal kept from overheating? i.e. this video explained most things pretty well but not how the piston would be lubricated in the chamber to prevent damage to the engine. 2. what metal specifically would be used as the metal sponge? I appreciate your time!

haha, and that's where my knowledge has its limits ;-) I'm just a guy with technical background who is fascinated by stirling engines and watched almost all stirling engine youtube videos :-D I think that lubricating the piston and preventing the damage would be exactly the main magic that Philips would guard as their business secret, because that will make the difference between a useful product and a cool but impractical toy. Also, the cost of maintenance is one of the main reasons stirling engines are not used everywhere today - it seems it's pretty hard to do right.

It looks like

Carnot effciency

+Jesus Alberto pone los subtitulos y despues en configuracion, traducir subtitulos, saludos

Si lo hice pero hay cosas que se mal traducen

aprende ingles xD

Jajajaja

Its less efficient as it gets larger, so viable large scale ones are still questionable, but in the 80s a car was produced that was efficient and functional using a sterling engine. It also had nearly 80mpg

@@Xrayflames Even if less efficient, the heat of the sun during the day is free. Maybe it can generate more power than the solar cells

@@oswaldoriginal7587 there is a type of solar array which uses a Stirling engine, and its one of the most efficient solar dishes available now

Click onthe "CC" at the lower right of the screen. Then click on the gear symbol to the right of the "CC" scroll down and select "Vietnamese". I tried it and it did put of what I assume is Vietnamese subtitles.