The Tiny Little Mostly 3D-Printed Stirling Engine needed some exercise, so here it is under full steam* at ΔT = 40 °C heated from the very printer bed it sprang forth from.

--
*: "under full warm air and slightly warmer air" would be more correct but far less poetic

#StirlingEngine #3dPrinting #Thermodynamics #ThingsThatGo #Machines

A #StirlingEngine built with minimal parts.

https://hackaday.com/2024/03/28/a-stirling-engine-from-minimal-parts/

I am pleased to report that you can run a small #StirlingEngine on a freshly toasted #bagel.

Anyone out there modified the heat source for a #StirlingEngine for a non-traditional type?

I'm wondering if a mini induction coil heater powered by a lipo would work.

Replacing the Glass with a metal of course. Stainless Steel perhaps.

#engineprojects #steam #airengine

Makes you wonder if perhaps all the steam punk tech will come to pass in the near future.

#stirlingengine #steampunk
#energy

Hot Air Stirling Engine Generator Model Light and Voltmeter
https://youtube.com/shorts/Ojty4cBDQWU?si=frqpcJg6pD07rjKN

Building a tiny Stirling engine

https://youtu.be/YCjwlSX-tsY

#machining #technology #StirlingEngine

Phys.org: China tests a Stirling engine in orbit

https://phys.org/news/2023-04-china-stirling-orbit.html
#stirlingengine
#cnsa
#nasa
#rollsroyce

China Tests a Stirling Engine in Orbit

https://www.universetoday.com/160816/china-tests-a-stirling-engine-in-orbit/

#china #stirlingengine #technology #nasa #space

China Tests a Stirling Engine in Orbit
The China National Space Agency (CNSA) has made considerable progress in recent years with the development of its Long March 5 (CZ-5) rocket and the completion of its Tiangong-3 space station. The agency also turned heads when it announced plans in June 2021 to create an International Lunar Research Station (ILRS) that would rival the Artemis Program.
https://www.universetoday.com/160816/china-tests-a-stirling-engine-in-orbit/ #StirlingEngine #China

I'm interested in building a #StirlingEngine that has enough power to spin a hoverboard motor. Not entirely sure of what scale I'm in for, that sounds like I have a lot to learn. I have a large canning cooker that I hope to use as a sand battery.

#PowerGenerator #generator #HotAirEngine #SandBattery #HoverboardMotor

I've always been fascinated with Stirling engines and finally purchased one. Here it is running off a cup of tea.

https://en.wikipedia.org/wiki/Stirling_engine

#StirlingEngine #Science

An interesting crowdfunding campaign trying to raise money for a Ukrainian maker who's attempting to build a Detroit-designed open source Stirling heat engine to generate power:

https://gofund.me/c35768cb

#Ukraine️ #StirlingEngine #RenewableEnergy #OpenSource #Maker #Crowdfunding

Stirling engines are super neat.

This little one doesn't provide all that much power, but at least it does it in style.

#science #sciencetoy #stirlingengine

Home Made Stirling Engines From Expedient Materials

Many of us have read about Stirling engines, engines which form mechanical heat pumps and derive motion from the expansion and contraction of a body of air. A very few readers may have built one, but for many they remain one of those projects we'd rather like to try but never quite have the inclination. The YouTube channel of [Geral Na Prática] should provide plenty of vicarious enjoyment then, with the construction of a range of Stirling engines from commonly available materials. We have Coke cans, PVC pipe, and nebuliser cartridges forming pistons and cylinders, with wire wool serving as a regenerative heat store. The latest video is below the break, an amazing 10-cylinder rotary device.

The Stirling engine is perhaps the quintessential example of a device whose time never came, never able to compete in power and efficiency with first steam engines and then internal combustion engines, it has over the years been subject to a variety of attempted revivals. Today it has appeared variously in solar power projects and in NASA's hypothetical off-world power plants, and will no doubt continue to be promoted as an alternative energy conversion mechanism. We've featured many working model Stirling engines in our time and even done a longer investigation of them, but sadly we've yet to see a story involving a practical version.

Our thanks to [TheFinn] for the tip!

#enginehacks #stirling #stirlingcycle #stirlingengine

so now that i have an idea for the heat exchanger on a stirling engine, i’ve been thinking about what to actually make the engine out of and i came up with a fucking grand idea:

a polaris 400cc 2-stroke engine out of a 4-wheeler or 6-wheeler (pics related, is the engine in question)

so a pair of these engines are a super cool idea for an alpha stirling engine for a couple of reasons:

• very simple head, only has a spark plug hole and water jacket
• liquid cooled cylinder (!!!)
• integrated high volume impeller water pump (!!!)
• pretty good size displacement, two cylinders means a stirling engine with 800cc!
• are JUST two cylinders, no trannies to deal with (those are mounted separately on a bike)
• integrated counterbalance to keep the thing from shaking around too badly
• blown engines can be had for dirt cheap
• very popular engine, used in a number of bikes for a number of years
• as a 2-stroke engine, they produce anywhere from 23-53kW of power

it does however have some things to address:

• oiler box on the front of the engine. this usually injects 2-stroke oil into the intake so you don’t need to mix oil — this will HAVE to be sealed off and removed otherwise the bottom end will leak
• cylinder sleeve has intake and exhaust ports milled in the side of it — the two cylinders will HAVE to be resleeved to the exact same size with no ports milled into them ($$$)
• that fuckhuge flywheel bell housing

it might be a bit spendy with that resleeving process, BUT i think it will most definitely pay off once you get them together and transformed into a proper alpha stirling engine

#stirlingEngine #engineering

so the main bit in a stirling engine is called the regenerator. the regenerator is a sort of heat exchanger that’s situated between the hot and cold sides to facilitate the working fluid (usually air) moving between the two. a simple engine will have one of these, but bigger ones might have multiple.

for the most part, the regenerator is a just basic bitch tube with no valves except that it has (usually) a bunch of wire meshes inside to trap heat when the air leaves the hot side so it’s colder on the the cold side and when it leaves the cold side it gets preheated going into the hot side. this “regenerates” the heat that would normally be lost, which is cool because it increases efficiency!

the main problem though is that the wire meshes introduces a bit of volume inside the engine that never moves, called “dead space”. also, it can restrict the flow, which decreases efficiency D:

so my thought is this: what if you just split the exchanger into two sides with one way reed valves? one that the air always goes hot->cold and another cold->hot, and just remove all that wire mesh deal and interleave them like a regular ol’ heat exchanger?

this minimizes the dead space and flow resistance inside the engine to the reed valves while still performing heat regeneration, which could possibly increase efficiency quite a bit

just a thought ig lol

#stirlingEngine #engineering

Watch this elegant desktop Stirling engine go over 2000 RPM https://boingboing.net/2018/08/09/watch-this-elegant-desktop-sti.html #stirlingengine #Gadgets #family #Video #video #Post #Kids #toys

Retiree sourced materials for #StirlingEngine from vast parts supply rooms: https://hackaday.io/project/9147-stirling-engine-number-nine #Hackadayio https://twitter.com/hackaday/status/895547806211076096/photo/1 source: https://twitter.com/hackaday/status/895547806211076096