Stirling Engine Generator Homemade DIY 0.47 KW ! Part 3
Ғылым және технология
A lot of people have been asking about the power output of this engine so here it is!
To see other videos of the Mk2 stirling engine:
• Stirling Engine Mk2
If you need to contact me:
shanepomeroy@hotmail.co.uk
If you want to see the power results, skip to 9:29
We've done a bit of work on the engine over the last few months,
-Stripped engine down and cleaned out oil/was residue that had built up. We are now trialling silicon oil as the lubricant which seems to allow the leather seals to slide extremely freely. This has the added benefit of being fairly inert and able to put up with high temperatures.
-Dynamometer brake built to allow us to measure the torque output. Its a little basic / crude but should allow us to get an idea of power output
-New leather lip seals have been manufactured and fitted. The originals were tight on the pistons and jammed up (the engine oil lubricant may have caused this!) These are now 3mm thick instead of 6mm. They have been soaked in neat's-foot oil for a week and lubricated with silicon oil after installing. So far really happy with these.
-Alternator was removed because it was dragging engine down to much. We might refit this again with revised gearing that better suit it.
Overview of test
For the test we have a built a fairly hot fire using welsh anthracite coal. The crank phase angle is set to roughly 100 degrees. We took a range of torque readings between 300 to 1000 RPM.
Conclusion
Maximum recorded output was 0.63 horsepower (472 watt) at 600 RPM. This way have been slightly more if we were able to disconnect the chain drive to the second shaft (needed so we could start it!). The sweet spot for power output is between 600 to 700 RPM. This is probably not to bad when you consider how inefficient this engine is with big mechanical / heat losses.
The crank phase angle was set at 100 degrees for this test. Adjusting this may have gave us slightly more power
Next steps
Now that we know the power output we can work out what to power with it. We could refit the alternator or perhaps drive something mechanical? Not sure yet? Any good ideas?
We will be running this engine at local rallies this year so will get a better idea of the reliability of this setup. We don't plan to develop this one any further because of the restrictions of the design.
We do plan to built a 3rd engine of better / simple design that is smaller but still easily built with basic tools / materials. This will probably be a project for next winter!
Specification
Piston to tube clearance cold side 3.5mm
Piston to tube clearance hot side 3.5mm
Hot bulb clearance from inner tube 3.5mm
Cold cylinder outside tube clearance from piston 3.5mm
Hot Cylinder length from bottom of regenerator to bottom of inner tube 274mm
Cold Cylinder length from bottom of regenerator to bottom of inner tube 565mm
Pistons OD 139.7mm OD
Hot bulb heat area inside (measured from bottom of regen housing) 1640 cm2
Cold jacket cold area internal (measured from bottom of regen housing) 2830 cm2
Stroke cold piston 186mm
Stroke hot piston 204.5mm
Fire grate to bottom of hot bulb 198mm
Leather seal (bottom) from bottom of regenerator 275mm
Regenerator height (flow area) 55mm
Regenerator length 216mm
Regenerator width 100mm
Displacement 11.4 litres
Пікірлер: 826
That’s awesome you quantified the power of the engine most people on youtube report RPMs only which doesn’t mean anything by itself.
@mcombatti
2 жыл бұрын
Not bad on conversation considering a 1/2HP motor takes 0.367749KW to run...
@mcombatti
2 жыл бұрын
If the system was balanced (see wobble) it would spin at least 1/3 faster... The wobble will eventually lead to mechanical failure due to the constant resonance in the unbalanced system. Great work though!
@Dave-dh7rt
2 жыл бұрын
@@mcombatti yea they need to put some weights on it to balance it. You would make MOAR POWER, and extend the life of the engine!
@MadScientist267
7 ай бұрын
But I got a bajillion volts!
@qoph1988
6 ай бұрын
Clever way to rig up a dynamo as well.
Beautiful. Never seen a Stirling engine that size running before. Thanks for putting this online!
@ShanePomeroy
2 жыл бұрын
The plan is to build another mk3 version with better power to weight but very simple (cheap!) Build. I really think its possible!
@alextrezvy6889
Жыл бұрын
Look for "Sunpulse 500".
@FrankensteinDIYkayak
Жыл бұрын
@@ShanePomeroy It would be nicee to see something which could reasonably be made on a desktop mill and lathe. If high thermally conductive materials were used and such it would be interesting to see how small it could get. I wonder how many modified off the shelf parts could be used to make it easier.
@DetroitFettyghost
Жыл бұрын
That’s sad you’ve never seen one bigger than that because mines at least twice as big, it’s also got a Effer phosphor vestment chlamydian jokitch munia- Sorry if my English is not perfect it’s not my first language
@Made_In_Heavenn
Жыл бұрын
@@ShanePomeroy i know this sounds stupid but, is it possible to make a car using stirling engine?
I spotted small train tracks going around the house, this guy intelligently didn’t forget his childhood and revisits it on occasion
What i always found strange about Stirling engines is that there are a lots of small ones and really huge ones for submarines and so on but a useful engine for home use isn't available
@daviedood2503
Жыл бұрын
@@DetroitFettyghost say what? It's a generator ?
@dammitdad
Жыл бұрын
@@DetroitFettyghost nothing pops up on a search of their catalogue for Stirling or the part number
@DetroitFettyghost
Жыл бұрын
@@dammitdad lol it was purely sarcasm. It doesn’t exist lol. My bad- thought I made it obvious with all the made up words I used. Farkle Switchmaker? Marquita Parallel? McGallion Watts? 🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣
@ZT_Performance
Жыл бұрын
@@DetroitFettyghost dude why even put energy into all that
@DetroitFettyghost
Жыл бұрын
@@ZT_Performance literally took 10 seconds with voice to text my friend
I bet your neighbors love you guys
That sound is intoxicating. Record that for 2 hours and put it on KZread as an ASMR video. That would make any gearhead fall fast asleep and the rhythm will soothe a rowdy soul........ Beautiful machine Bro
This looks like a great start. Balancing/weighting your flywheel should give you a decent boost in speed and power. Not to mention it will reduce/eliminate the shake and noise.
@victoryfirst2878
Жыл бұрын
They say great minds think alike. They are correct.
@NugChannel
Жыл бұрын
Yeah. Just a bit more revision on the mounting constructions.
Awesome work guys!!!! Great power output!! Looking forward to future tests and engine 3!!
I always search for big Stirling engines and can't find anything, so really take my hat off for this one. Congrats for such a nice project!
@ShanePomeroy
2 жыл бұрын
Kind words! I plan on building a more powerful, simpler, smaller version. stay posted
@jorgehernandez3737
2 жыл бұрын
@@ShanePomeroy my dream is build one powerful enough to move a vehicle and build a bike or car. Maybe one day I'll get there. Until then, I wanna see your next project :)
@davem5333
2 жыл бұрын
The reason you can't find big Sterling engines is because they don't exist. Stirling engines work on relatively small temperature differences. Which makes the engines large and very expensive for the power they produce and heat they need to operate. They are most suited to use waste heat
@jorgehernandez3737
2 жыл бұрын
@@davem5333 Sure, I agree. Even though I would like to make a big one for a vehicle just for the challenge and because I think it's cool, but it would surely be inefficient in comparison to other types of engine or electric motors.
What an awesome contraption. I love the actual cup used for water. Coming back later to find out more about those tiny train tracks I see.
@ShanePomeroy
2 жыл бұрын
The train tracks are causing interest! I plan to build a stirling engine locomotive for this
Thank you for taking measurements and sharing the video and specs in the description. Very appreciated and very impressive.
@ShanePomeroy
2 жыл бұрын
Very kind words!
You’ve done a great job! Impressive build sir. I hope your quite proud of it.
Perfect! Throughout the whole video i was wondering how much power the producers and then you show us just that, and in more detail than reasonably expected
Interesting and thanks. I've seen photos of similar devices from the early parts of the last century for pumping water. Smaller gasoline engines became popular during the 1920s, also for pumping water. Note, what might be a fairly new car coolant radiator on the side of this widget.
Certainly the largest Stirling engine I've seen. Well done, lads.
Fair play to you guys for that! I came across this vid looking for ways to generate power for a homestead. Too noisy for me, and would require constant attention regarding fuel, but amazing how you did it. Things that I make that run at that speed tend to be dangerous and nearly kill the dogs. Yours held together admirably. Respect. :)
bravo! that has to be the most vigorous large homebuilt engine ever
Great video. I *love* that you have a small track presumably for moving heavy things around (3.54), from the garage to the backyard etc.
@ShanePomeroy
Жыл бұрын
Good spot! Yes, you wouldn't believe the things I've moved using it !( new wood store, 12ft oak timber beams, engines). Hoping also to build a stirling engine locomotive at some point.
@juliogonzo2718
Жыл бұрын
Maybe it's a regular size track and they are just enormous people
Scanned your video list, definitely subscribed, I guess I’m just going to jump down the stifling rabbit hole once again! 🙂 I love this kind of stuff.
Thank you for this video! Your neighbors deserve compassion! ;)
É um motor de respeito. Quando vi os pistões sabia que teria muita força. Construí um Stirling em menor escala e senti o potencial capaz de chegar um motor destes. Parabéns e boa sorte!
The most incredible stirling engine i ever seen. You guys did a great job with this machine.
@ShanePomeroy
Жыл бұрын
Cheers, just need to iron out a few issues : )
@moschettiflavio3635
Жыл бұрын
@@ShanePomeroy It seems already old school made. With black paint and gold stripes would be amazing.
@victoryfirst2878
Жыл бұрын
@@ShanePomeroy I look forward to see you iron out the buggs.
Wow! Beautiful machine; and it sounds amazing. Going to have to go back and watch all your videos on this!
@ShanePomeroy
2 жыл бұрын
Awesome, thank you!
That is wonderful! If the grid goes down, this would come in handy!
You are a rock star! Well done! Great looking build!
Great. Keep up the good work. I think you've done a great job. Striling engines have been neglected in the past but they can be a solution to our future energy needs.
@jessepollard7132
Жыл бұрын
they are by nature a bit inefficent specially when compared to turbine engines.
Very cool! 👍👍 I would have used a spring scale instead of the digital scales. Spring scale can be very robust, and is easy enough to calibrate by hanging some weights on it.
What an excellent example of an old technology that could be very useful these days.I love how you use coal too.
Quite impressive work, thanks for sharing sir.
Your math is dead on. That's a clever way of measuring the torque. If I understand it correctly the end of the reaction arm is 1.5ft from the center of rotation. If it were up to me there would be a counterweighted crankshaft above the pistons. That way you could balance out your forces. Great job!
@ShanePomeroy
2 жыл бұрын
Thanks, Maths isn't a strong point, so if you see anything that's isn't quite right, please straighten me up! I like the counterweight idea, I'll right that one down, cheers
Great job bro, I noticed that such an enhancements could be done on it to increase its efficiency, like using light robust pistons, isolating chamber from outside, create furnace chamber in circled shape so that heat concentrated in a more efficient way, water based cooling system.
@samuelfellows6923
2 жыл бұрын
And put a fan on the coils/car radiator, - directly driven/12v fan powered by alternator
@Dave-dh7rt
2 жыл бұрын
Also using weights to balance the flywheel or fix whatever else is making the engine shake
@CharlesVanNoland
2 жыл бұрын
@@samuelfellows6923 What would be better than fans driven by an alternator are fans driven by the engine itself so you skip the losses due to conversion from mechanical -> electrical -> mechanical.
@szpl
Жыл бұрын
@@CharlesVanNoland Good idea, there is a simple mechanics to it - couple the fan to the main shaft by a visco-clutch. It can be thermal sensitive and adjust rotation of fan based on the actual heat. Very simple and reliable device, eg Isuzu used on engines designed to operate under load while standing still.
@dreece2000
5 ай бұрын
I’m just impressed that someone has made one of these that is actually useful
thats awesome, even if its wiggling like crazy trying to kill itself and sounds more like a power hammer rather than an engine xdd, its really cool you actually measured the torque and rpm
It's always good to have your da helping out.
What an incredibly English-looking machine. Down to the funny teacup being used as a water reservoir. I love it.
This video has it all! ...cool engine, cool motorbike, little train track. =D
Magnífico!! Extremamente rapido e forte!! Very nice, very stronger!!!👏👏👏👏👏👏🙌🙌😃😃😃Congratulações do Brasil!!!
Well done! Thanks for sharing the journey. Thinking how much is wobbling... might be beneficial to make another flywheel on the shaft that counter rotates somehow that's the lowest friction. Not certain what mechanical design is the best offhand since I'm not a mechanical engineer. Though seems a counter rotating flywheel will calm the machine down. Nice work!
Amazing, great product made in the garage, I really like this kind of expertise.
@ShanePomeroy
Жыл бұрын
Thank you very much!
Just wonderful sir! Thanks! Im sure you have seen the UT video... The Stirling Cycle part 1 (Stirling Cryogenics) It succinctly describes an optimised machine which addresses many of your issues with efficiency etc. Well beyond my pay grade!
This thing is awesome nice work
Great build, really enjoyed the video.
You're the man!!!! I was so wondering roughly how much power one could harness with this sorta thing. I'm sure some physics god could improve efficiency even further, but darn 1/2 hp is epic my man. I was only shooting for 18w and then connect it to a USB for a fire powered phone fast charger, but you far exceed what I thought was possible. Great job and thanks for sharing
@ShanePomeroy
Жыл бұрын
This engine does have huge swept volume! I think atmospheric pressure stirling engines need re-exploring with the availability of materials these days. The best non pressurised engine I know of creates proportionally 5 times as much power as mine (it is model size), but why can't this be increased in size to create meaningful HP?
At least 50 percent of its power goes into that "dah-dah-dah" sound I believe. :D
Now this is the kind of stuff I’ll stay up late for
Punkstream fans will love this for sure!!
That's an absolute beast!
And it’s very quiet too! Lol. Great job guys!
@ShanePomeroy
2 жыл бұрын
I can't believe its even running sometimes!😀
That is really awesome keep up the good work 👍
Bet it really goes down well with the locals!
Great Job Shane.
Very impressive.... I love it!!!! You should find the most energy efficient heater that you can. I've read that quarts and ceramic work best. I would love to see if an energy efficient heater could be supplied initially by another power source but then be able to run off of the power produced by the engine. With ALL my love NLL
Bet the neighbours are pleased to hear you running it.
@ShanePomeroy
Жыл бұрын
That is the number 1 comment from people! So much so I've bought a sound meter to measure the noise!
Took me a while to work out which cylinders were the displacers and which were the power pistons. Looks awesome, I bet that could run household electrical power.
Impressive build , scary too !
I bet your neighbors love you haha! Very cool system, love it!
@ShanePomeroy
Жыл бұрын
That is the number one comment about the neighbours, lol
very impressed great work guys
Well done lads ! When it comes to Prepping, I prefer your machine to a solar panel of equal output.
@ShanePomeroy
2 жыл бұрын
Thanks 👍, Just need to work on the power output, size, efficiency, cost for the next one. Hoping to develop something genuinely useful for off grid use that is of very simply design / cheap
Very nice machine... Also the garden railway tracks!!
@ShanePomeroy
2 жыл бұрын
Thank you very much!
Wild, looks like it is going to break apart at any moment.
@ShanePomeroy
2 жыл бұрын
lol! who knows?
Impressive built!
the happily steaming cup 'of tea' made me smile :)
Nice build!
That's the most beautiful steam-punk machine I have ever seen
Whether it's useful or not it is awesome
Impressive, sounds great too.
Looks exactly like the one my grandmother used as the motor for her Harley Davidson menstrual cycle
in a word. FANTASTIC👍👍👍👍👍
Sounds like it needs oil somewhere.. very loud. Cool test. Thanks :)
Nice concept as a sterling engine set up. But I prefer them when powered by for instance solar heat from a parabolic mirror that follows the sun during the day. But when heating with wood a simple gasification set up can help you run a much more powerful normal combustion engine and to go very efficient you could hook up a Taurozzi pendulum engine which has much less resistance/ friction in its pistons when interacting with the cilinder wall, less need for oils to lubricate etc. Cool engine design, worth checking out when one is interested in engines of any kind.
@ShanePomeroy
Жыл бұрын
Yes, this one is a little inefficient! I'm interested with the gasification burners for future designs. Ive just taken a look at the taurozzi pendulum engine, very interesting. I'm not sure how I'd go about producing a curved cylinder through. It has made me more aware of frictional losses on the cylinder. Something I will need to pay more attention to in future designs. I'm currently building another stirling engine, check out my channel.Many thanks for your insight.
Parabéns pela engenhosidade
good job. punk design, pleasing neighbours..... 😉
What a beautiful piece of engineering! Is there any possibility for you to share any blueprints? It would be a very satisfying project to build such an engine with my kids! :-)
@kaboom-zf2bl
7 ай бұрын
look up James watt condensing steam engine ... and you can duplicate their engine ... if you want a sterling cycle engine ... search for sterling cycle ... and then increase the coffee mug size toy to the size VW bug and add an alternator driven off the flywheel and you now have a generator ... that will power your basic home ... (not the freezer fridge and stove the biggest power wasters in all homes)
Awesome love it! should add a ring of magnets around the flywheel, and a few stationary coils of wire on the frame would produce electricity with out adding belts or cogs..
@ShanePomeroy
2 жыл бұрын
That is a great idea and also adds to the simplicity of things! When I build Mk3 I'll try to incorporate that, thanks
@aidenjohns8248
2 жыл бұрын
@@ShanePomeroy it was an idea of my dad's he wanted to do it to a water wheel, but never found the place to do it!.. i think it would work well on your sterling engine!.. cram as many magnets as you can on the wheel, could even do both sides with a coil on both sides.. be an interesting experiment..
the first 40 seconds was like watching an episode of the 3 stooges. great work on the engine. looks like it was made in the 1800s.
@ShanePomeroy
2 жыл бұрын
LOL, yes my dad and I have a long history of arguing!!! I thought it was entertaining so left it in!
Brilliant One of the Best Ever Beautiful Build Congratulations =D
Wow biggest homebuilt stirling i've ever seen
Pretty badass machine!
First time I've seen a Stirling engine operate. Not much progress on this engine design in the 50 years since I was in college!
@ShanePomeroy
2 жыл бұрын
That's true. Most the progress has been made with the extremely high end (expensive) stuff. But then, we have technology / materials available now that they didn't have back then so who knows what could be done?
@drakeweddner
Жыл бұрын
@@ShanePomeroy check out lindebeiges video
I love to old Tea Mug as the water Funnel, fine work all round.
I could love to see something like this commercialized maybe the heated portion a woodstove and the Generator part outside of the cabin.
@ShanePomeroy
Жыл бұрын
That's a good idea! Would be ideal for log cabins and places where mains power isn't available . Putting the cold heat exchanger outside would be a good idea!
Batshit crazy. I'm thinking this must be very high tolerance and your spec says 3.5mm, and it works beautifully, magnificent. Someones a good welder. I cant believe how fast that things going .
@ShanePomeroy
Жыл бұрын
Lol, I'm as surprised as you it even works!
back to the future Dr. Brown
You can mount a fan sucking ar trough the radiator and directing this air under the firebox, so you'll have a cooling/blower with a single electric motor...
@ShanePomeroy
2 жыл бұрын
Great idea, thankyou
Superb...old is gold
Well done Sir! Interesting for electricity cogeneration in a house heated with a furnace. What is the temperature difference between hoy and cold part?
If I ever did this in my yard let alone on the sidewalk I'd be arrested within minutes, your very lucky. Great stuff. Cheers.
LoL i you got good neighbors' bro........that surely wakes up the entire neighborhood.😁
a HUGE advantage of this type of engine is the fuel ... literally anything flammable can power it! Technically with modifications it could also be powered by ice (on a a warm day) or dry ice, liquid nitrogen etc :)
@kr6dr
2 жыл бұрын
The most efficient way to generate electricity with sunlight is a Stirling engine.
@DavidPaulNewtonScott
2 жыл бұрын
@@kr6dr You could do thesam with a flame gulper engine.
here in the early 70's with the oil crisis a guy powered his 8 tone truck on steam, it could lift the front wheels off the ground he aslo had a steam-powered car an XP falcon, its on YT somewhere a 4 corners ABC Australia .
@ShanePomeroy
2 жыл бұрын
I'll take a look!
que crack este señor , como¡¡ camina ese stirling , ademas con un riel para sacarlo afueraa¡¡¡¡ Maestro¡¡¡¡
Such a huge machine for only 400watts of power. No wonder the Stirling engine never really made it. However I really would like to have a small free piston Stirling engine as an emergency power generator, those are really cool because they are small quiet and efficient.
Nice build
Great work, thanks sir
This is so awesome!!!
Great video 👍
Looks amazing
I like the design
I would find a more efficient and readily available fire source, as well as placing a flue on the chimney as to contain the heat better, I would also work on your balance being that the amount of movement outside of the flywheel is lost. You may be able to add a second counter rotating flywheel that should help balance and run more efficient and produce more power. At 11.9 liters you should be producing a level of power that could effectively run a generator enough to power yours and your neighbors home
@ShanePomeroy
2 жыл бұрын
Solid advice! I'll work on it!
would it be possible to run a large Stirling engine / electric generator off the heat rising off blacktop? perhaps a few extra mirrors reflecting more sunlight to charge batteries?
Try a cyntrifugal clutch on the alternator, that should help it to not bog down the system on startup