Guys, I think you should get the video digitally upgraded and preserved. This is one of the best introductory explanations of the Stirling cycle characteristics that I have seeen so far and I have looked at a lot. Most people trying to grasp the nature of the Stirling cycle long for an animation or description to accompany the equations and texts. It also has genuine historic value given the vast quantity of effort put into the Stirling by Philips even during WWII.

Read an old book about this in the 1980's called "Engines for Tomorrow's Passenger Cars by J.D. Withrow". It was nice to see the boat mentioned in the book. One thing I have noticed is a preoccupation with engine efficiency, what should be the focus is how to mass produce the engine and get the price down.

this unit is so cool. Nothing breaks whether it's 700°C or -150°C You can make liquid oxygen and use it for welding or whatever..

wow. It is one of the best introdcution to sterling engines. Lots of effort has been put on sterling engine invented long back. it is amazing. Thanks.

Great explanation and good fundamentals! Agree, this is one of those precious references one needs to preserve well! Thanks!

Fab! I love the mechanical parts that allow full controllability as a prime mover. Nowadays this would be so easy to do as a Stirling/Electric series hybrid.

To think that Stirling cycle engines really haven't advanced much since the 1950s when Philips engineers built that boat. Newer high-power engines really aren't much different in design. They pretty much perfected the technology.

Thanks. It's an old video but it's a very clear explanation of the cycle and the various uses it can provide.

Awsome explanation this should be updated

This shit is pure gold man!! thanks for posting

Brilliant video of a brilliant invention that somehow never went all the way. I would love to have one in my chimney.

very impressive

amazing

Perfect

very good engineering!

when used as a refrigerator what is the efficiency?

This is remarkable. Why is this not at the heart of every refrigeration system and heat pump system on the planet? Or is it, and nobody tole me?

Thank you for uploading this great video.

Surely there MUST be more practical applications for this technology

Oh Wow. I didn't know that Stirling heat pumps could generate temperatures this extreme! What year was this series made?

Respect! Tesla and Stirling would be proud.

Imagine bringing that boat in for repairs to your local mechanic! Just to watch his confusion and reaction lol ummm uhh what is... where is..? Wtf

What is the efficiency of converting heat to power out divided by heat in? This should give the percent of heat transferred to mechanical horse power out. Percent of heat efficient conversion to useable power. Where is most of the heat energy being lost? Any computer modeling to improve this ?

A few moving parts and high-efficiency equals something very remarkable! Imagine, tapping into solar and creating a generator for it?

When was that video made?

Very cool and hot !

Just an idea...cool down the air to liquify it. Then pump the liquid air to a nozzle which is at 700 degrees. The liquid air will instantly turn into gas and produce pollution-free jet propulsion.

impressive tech but I doubt there will be performmance gains if a less efficient working fluid is used. How many realize the true ramifications of the helium shortage?

I have to say I would love to own that little boat. Its incredibly high efficiency gives me a boner every time I think about it.

wonder what became of that research boat , probably destroyed .

why dh industires doesnt make the stirling engines for power production. is their any inherent limitation to it?

How to seal the piston rods at 100 atmospheres? That is the million dollar question.

A Stirling cycle engine that turned air to liquid that filled a Joe cell constructed out of super conducting materials to generate high frequency electricity has the liquid air boiled off producing hydrogen vapor to operate a combustion engine. This would work to operate a certain type of vehicle and air craft correct all without the use of fossil fuels? This would work correct?

Where did Robert Stirling get the equipment to manufacture the cylinders, pistons, push rods, compression tubes! Seriously the guy was a priest! It's not like he had millions! I've made some small Alpha and Gamma Stirling Engines, basically toys, or working models and this was pretty difficult! Robert Stirling was making the Beta Type version that is shown in this video. I don't have the means to do that. That's a pretty complex engine even by today's standards. He was making these with his brother in the 1800's WTF!? How!? Seriously I can't find that information on the internet. I find all kinds of information about the guy, and Wiki's about the history of the Stirling engines and their predecessors! But it all just gives variations of the same information. Robert Stirling was a Priest who wanted to give people something safer than the steam engine because steam engines were exploding and killing people! So he made his heat engine with his brother, and they gave a working model to some locals to pump water and then the guy went back to his church work, and people started to make his engines all over the place. Nothing that I can find shows how he cast his materials, this stuff today gets done in a machine shop. Was this old school foundry type stuff with sand and clay' molds? Because all of the information on Steam Engines of that era show that they were extremely laborious to make! They were made by companies that had lots of money, and steel and foundries with lots of workers.

give me dem engine !!!!

Hi be nice to see a hybrid gasoline hot air engine running off waste exhaust heat

Why not design a cryogenic cooler out of super conducting materials that turned air to liquid that feed back onto itself to reach ultra low temperatures and create a high frequency electric generator using atmosphere to produce high frequency electricity? A smaller version could provide air conditioning and a power supply for electric vehicles and air craft? Do you think it could work?

We will now extinguish the lights.

Imagine hooking up the Stirling Engine in the boat magnetohydro motor.

Isn't nitrogen harnessed using a Stirling engine?????

Why isn't this motor being used to heat and cool? Is there something wrong with it that I missed? one of these motors in your furnace could keep you warm in winter and cool in summer

I would like to get the idea of exploring the Sterling heat pump for storing energy as heat, and a Sterling engine to use the stored heat to generate electricity. Why? Climate Change. Solar energy is only available in the day. The excess daytime energy needs to be stored and used at night. The combination of a heat pump, and a heat engine has the theoretical maximum efficiency of 100%. Heat engine Emax = Thot/(Thot-Tcold) Heat pump Emax = (Thot-Tcold)/Thot. Multiply together, and you get 100% maximum throughput. Everyone will need energy storage, and the lowest cost materials should be used if practical. Suppose water is used for energy storage, and air for the heat pump. Hard to beat those prices! So assume you have two 50 gallon water heaters, and fill one with water at 0C, and the other at 80C, and both are filled using an ambient air heat sink at 20C . The efficiency of the hot heat pump would be 353 degK/60 = 588%. The efficiency of the 0C heat pump would be 293/20 = 1465%. The efficiency of the engine running with 80C hot, and 0C cold would be 80/353 = 22.7%. The hot tank would need 2.24 KWH. The cold tank would need 0.30 KWH. Assume a discharge temperature drop of 30C for the hot tank. The hot tank would then hold 6.6 KWH. The cold tank could hold the same by letting ice form. Filled with ice, the cold tank would need 17.6 KWH to unfreeze it. To get the desired 10KWH, we would need 1.51 hot water tanks. If the combined efficiency was 70%, the size of the hot tank would be 108 gallons. So for the price of 3 50 gallon tanks, two heat pumps, and one heat engine, overnight electrical storage could be obtained. Could this be competitive with 10 KWH of battery storage? Currently, the battery option is running around $20K. ... But think also of the difference in the materials required to service the world. Water vs. Lithium? Water vs. Lead? Water vs. Nickle-Iron? Come on engine experts - save the day!

Could you not use induction used for cooking to heat the pistons on a sterling engine? More heat would mean more RPM's correct? Would that make an electronic engine that could replace the internal combustion engine? Novartis ; )

why does it start over after it ends? o.O

Liquid air air is 71% nitrogen? Can this nitrogen be infused into water and used on crops has fertilizer?

Akira Kurosawa and the

Andeventuallytheboatfloatsawayontheprevalingwind

In those days your invention resulted in a video with many pauses. These days it goes public and you become a billionaire.

I did not from what I remember, know Sir Stirling was a Minster. funny, I am going to be a Christian missionary and I am looking at a way to generate power of various kinds for various reasons. I feel Like Right Jesus Christ is wanting me to do this, finish his,Sir Stirling, work.

Tak lali azot

Why not use a Stirling cycle engine to produce liquid atmosphere to fill a tank then use an emitter to separate the oxygen and hydrogen? Then use a Joe cell with a different frequency to produce HHO to be used in a combustion or jet engine? This would work right? No more need for fossil fuels?

Hot and cool. pun intended. Pity, Koch turned out to be so, well, evil.

Would not the Stirling engine become a cold cycle engine from the liquid air leaving it to generate a steady flow of high frequency electricity from the super conducting materials it was constructed out of? It would operate non stop and if constructed correctly would not have any friction points from how super conductors work or even using gadolinium in its construction generating magnetic bearings? This could work correct?

imagine a huge paper coffee cup on the top to collect the liquid air the system could be used as a mechanical battery

THis engine LOOK LOOK IM AWSOME IM THE FUTURE!! internal combustion engine and oil companies: ima end this this mans whole career

We need fart motor right now.