3d printed Solar Stirling Engine

This 3d printed solar stirling engine is a download-project from:
WWW.REPRAP-WINDTURBINE.COM
It's nice to print and easy to build!

[@kreynolds1123]

Give this a shot. In solar stirling mode: 1) replace bottom plate with glass. 2) Spray paint bottom of displacer/regenerator with black paint. The high surface area of displacer should heat the air inside faster and the glass should provide some insulation value. Forcing more of the heat to flow from hot side to cold plate.

[@peachmunich]

Beautiful! I like the design. Especially, the displacer rod is not only guided in the sliding bearing. It is also guided near the fly wheel. That reduces friction by the side loads a lot! 👍

[@robd9314]

This is really great- very inspiring. Well done!!

[@999vrgl]

Great work! Next step a more complex eninge with more power

[@warrenbrooke2402]

An elegant design! Congratulations

[@Boele17]

Schöne Projekte! Glückwunsch!

[@ManualdoMotorStirling]

Very good your engine, especially for its operation with the heat of the sun, without the need for reflectors, congratulations! Leandro Wagner.

[@andreashaeuser4768]

Manual do Motor Stirling - Leandro Wagner Thank you for this command, Leandro. It took me some month to develop this design. I'm happy that you like it!

[@sandsalpha]

have you tried putting the entire assembly inside a white box while only leaving the black solar heat collector exposed? that might help keep the cool side a little cooler, increasing the temperature differential and potentially the rpms...

[@suryacadem]

Excellent work

[@StirlingAnnecy]

Good job!

[@antonylawrence7266]

2019 and I've only just seen this. It's time to move Stirling forward and save our bloody planet

[@raoulman1]

Nice, thanks for sharing.

[@shaikatozkuwait7901]

Good job

[@teriampuls9356]

Tolle Konstruktion. Ich stelle mir das noch in Verbindung mit einem Parabolspiegel vor um die Leistung zu erhöhen und einer automatischen Nachführung zur Sonne :D Super Arbeit und Grüße.

[@701983]

Teri Der Don Solche solar stirling dishes gibt es natürlich. Nur haben die dafür verwendeten Hochdruck- und Hochtemperatur-Stirlingmotoren wenig mit diesen Modellen aus dem 3d-Drucker gemeinsam. Und seit dem Preisverfall bei Photovoltaikmodulen sieht es für diese alternative Solarenergie-Technologie eher düster aus. Wer würde sich schon einen großen lärmenden solar-stirling in den Garten stellen, wenn er mit lautloser PV auf dem Hausdach ein Mehrfaches an Strom erzeugen kann?

[@teriampuls9356]

Thomas Schuster Hi Thomas, wir haben uns ja länger nicht mehr so unterhalten ... ich bin ein bisschen aus der Szene der alternativen Energie-Mitdenker-und-Kommentarschreiber raus... leider. Ukraine, Syrien, ach herje... Gedanke: Ein Rohr, vertikal an einer Hauswand Richtung Süden aufgestellt. Dann der Parabolspiegel als Wanne so ausgerichtet, das die Sonnenstrahlen auf das Rohr gebündelt wird. Da liese sich doch anständig Druck aufbauen, meinst du nicht? Das könnte man sicher noch mit einem Wärmekollektor kombinieren, der z.B. im Winter für zusätzliche Leistung aus dem Boden sorgt. Viele Grüße PS: Meine Stadt hat 2019 so ein Landesgartenschauprojekt das ziemlich "oldschool" ist. Kennst du vielleicht Leute aus der stuttgarter Gegend, die sich schon ein bisschen mit solchen Projekten auseinander gesetzt haben? Bye bye

[@701983]

+Teri am Puls Gleich vorweg: Ich kenne niemanden aus der Stuttgarter Gegend. Was deine Konstruktionsidee angeht: Würde zwar grundsätzlich funktionieren. Aber das gilt für viele Konstruktionen, die wegen einer schlechten Kosten-Nutzen-Rechnung nicht in Frage kommen. Und die geringe Temperaturdifferenz zwischen kalter Winterluft und etwas wärmerem Boden könnte zwar ausreichen, einen Stirlingmotor in Bewegung zu setzen. Aber die Leistung, die sich davon abzapfen ließe, wäre zu vergessen. Auch bei Stirlingmotoren gilt: Je geringer die Temperaturdifferenz, desto schlechter der Wirkungsgrad.Und wenn geringes Energieangebot auf schlechten Wirkungsgrad trifft, dann wird's finster.Der Traum von der Energiegewinnung aus jedem kleinen Wärmegefälle bleibt auch mit dem Stirlingmotor nur ein Traum.

[@a330turbinex7]

Superb!!!!

[@das250250]

You need to generate electricity to store in batteries and then use that energy in part to control the direction and the reflectors to track the sun ..

[@ipeeinmysinkimafraidtocome7127]

what is missing ? what can it produce ?

[@teslatrooper85]

No, you don't. You just use solar cells for a heliostat. You don't don't even need solar cells, you can use thermal expansion of fluids for this.

[@zano9291]

Seemed like they were getting a nice tan in😂

[@beaconofwierd1883]

Kind of disappointed you did not hook it up to a motor and see what efficiency you actually get out of it. Not that I expect it to be much, would still be cool to see.

[@konekoray9323]

Low temperature displacement stirling engines like these are made to be balanced just right so they can run under their own power indefinitely, should you have an adequate source of temperature differentials. Say you put it on top of your radiator in the cold of winter. It should run nonstop for months. But to do so, it is all about minimizing friction and drag. Hook it up to any sort of motor, generator, or the like, and it would just stop.

[@beaconofwierd1883]

@@konekoray9323 It's just a matter of how small the motor is. Obviously the efficiency will be extremely small, but still fun to know what the the efficiency actually is :P Even if it's just 0.5% or something like that.

[@dedelytub]

Beautiful but no information on the mechanical power possible and solar efficiency as function of solar température ????

[@kreynolds1123]

Heres some idea. With about 800w of solar energy per sq meter on the ground, if a low temp differential stirling is say 5 efficent then you can produce 40 watts of mechanical power. If a higher temp differential is 20% efficent then you can produce 160 watts of mechanical power. If you have a dish with a collection area of 5 sq meters, thats 4kw of sunlight and if your stirling generator is say 25% efficient, then you can generate 1kw of mechanical power. Stirling engines are heat engines and all heat engines efficency is limited by their carnot efficiency. And that's a function of the temperature difference between the hot side and cold side, and the cold side dumps it heat mainly into air either directly or indirectly through heat exchangers. Those living by the ocean may dump the heat into ocean water. One can also increase the efficiency by increasing the heat on the hotside, so long as your not loosing much of it to convection air currents.

[@g.p.manikandanmechanic7669]

👍👍👍

[@vistanationrockafellaz]

can try put ac sync motor with siries connection of both unit

[@ajaxthepibble5453]

Are the plans for these still for sale?

[@felixgekeler9947]

Hallo Andreas, leider ist der Shoplink für die Unterlagen defekt. Für den Rasenmäher und die Windturbine komm ich allerdings bis zum Bestellformular. Gibt es hier eine Info ab wann ich die Unterlagen kaufen kann? Vielen Dank.

[@ne1cup]

I want one..

[@lacaver64]

very nice and can he produce electricity and how many W con he produce?

[@j.christie2594]

Don't think they engeered electric generation in this one. But great idea that should be added. Changer for cellior or batteries would be good, upgrade..

[@user-ig3ox4hu8m]

Do you continue to study this topic? Did you get useful energy?

[@yummi.gatito]

No money no honey, I want stl😂

[@aoeu256]

For scifi how about using Sand printers on the sahara dessert that self-assemble by printing presnel lenses out of sand and using the additional fresnel lenses to melt sand and then splitting the fresnel lenses in two when they are enough to split. Since the sand replicators grow exponentially in only 40 generations we will have a trillion of them. Whats the best way to convert the solar energy to storable energy? I was thinking they could build a stirling engine that uses the solar power, but if the 3D printers are on a beach they can use salt-water + sand-glass to create electricity, hmm. What would I need to do so that people would pay me to just think about and tinker with sand, mud, and ice 3D printers/replicators : (.

[@ukaszsypien5267]

Sahara sand would make poor glass and even worse lenses

[@EduardoSanchez-yn3el]

quiero comprar uno donde ?

[@furlockfurli2719]

Green one works slower, as the sun emits green light mostly? Kind regards.

[@carlosvallori2365]

any people has a STL files?

[@edwardsciacca8012]

hook up a Compressor or Generator something small .

[@olasoderlind5685]

maybe you replace the wiel whit 2 or 3 cd disks spaced like a testla pump that whil also work too cool the cool side

[@SolarizeYourLife]

So how many grams of force does this supply?

[@cosmefulanito5933]

Almost ZERO.

[@elektronikschmiede3464]

Usable Power output less than 5 Watts ? Nice to look atm but useless.

[@alerey4363]

of course it's not suitable for power generation nor usable torque; stirling engines are ultra lightweight both in terms of their mechanics and thus the power they can output; they are more like an attraction, capable of running from the heat of your hand, cup of tea, sunlight etc

[@marekp5673]

What power it can generates using solar energy?

[@cosmefulanito5933]

None. ZERO.

[@greenacresfarms]

any idea how much torque you are getting?

[@cosmefulanito5933]

Almost Zero.

[@seanfinkel9621]

Now I can File my Toenails for FREE !!!

[@Links-Plus2]

Can we charge our gadgets? with them add on generator

[@owarida6241]

You could if you belt it to a generator but the power output is so abysmal that you need multiple to make it turn 😂 Well, solar is one way to put and it's more compact.

[@michelcecere7286]

How many watt/h it can produce ?

[@cosmefulanito5933]

Almost Zero.

[@Ibian666]

So how much power does it produce?

[@cosmefulanito5933]

ZERO.

[@ipeeinmysinkimafraidtocome7127]

how you move the atom ? ,what aborve the atom ? what is causing the mechanical ?

[@Sharkiuli]

there is no link

[@andreashaeuser4768]

+Sharkiuli www.reprap-windturbine.com

[@rubetrike]

Modelbouw miniatuur verloren tijd

[@shannondupont3051]

link for instructions www.shareit.com/product.html?productid=300661067&languageid=1&stylefrom=300661067&nolselection=1&pc=v35x4&csp=0&usp=0

[@matthewmurphy2631]

The sun thing would have worked better if you just made a plexi box on it...