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File: 1568225841034.png (39.61 KB, 737x435, Alpha-stirling-engine-main-par…)

Energy Future Mk17!!Trixie (ID: 66932a)Country code: us, country type: geoip, valid:   334445

So it's obvious that alternatives to petroleum and other common fuels are taking ground. We are in that stage where we kind of suck at something on the way to getting really good at something, but we see improvement every day.

One mode of energy production that i dont think gets enough love is the Stirling Engine.
Its basically an engine that runs on the basic principles of thermal dynamics, in that it uses heat displacement to run.
Powerful Mini Stirling Engine - TEST

There are a ton of examples of mini desktop engines that people build for fun, but they can and have been scaled up to produce enough power to run a household on and more. There has even been Stirling motor airplanes, though, the power to weight ratio makes them pretty impractical atm.

The heat can be generated in a number of way, from burning fuel, to focusing sunlight, and it just has to be a differential, meaning, you can also cool one side to make it run, if you cant produce more than atmospheric heat.
Idk, it would be cool to have personal household generators that run on a bunch of different fuel types. So you could have it work on solar when there is sun, and something like alcohol when there isnt... Or hell, just burn some newspaper and junk mail.

What are your lofty visions of the future of energy?

Ephemeral (ID: 8b0571)Country code: dk, country type: geoip, valid: 1  334450

I'm just excited to see solar become cheaper and more efficient.

I also think the future of energy lies maybe not so much in developing new ways to produce crazy amounts of it, but rather in thinking of ways to effectivize the ways we use it currently? There's a lot of stuff that can be done to cut down on the use of energy, and that's very important, I think.

Mk17!!Trixie (ID: 455944)Country code: us, country type: geoip, valid: 1  334453

File: 1568231778153.png (669.35 KB, 926x1237, 1532406269820.png)

>>334450
Solar energy can come in many forms.
Right now, solar panels are getting more efficient than ever, but there are still draw backs to their practicality.
Mostly the surface area required, the cleaning and maintenance, the fragility, and the efficiency. Not to mention, you need some sun.
All are solvable problems and getting better, but there are more ways to use the sun than just photovoltaic.

I think it would be more efficient, especially at the moment, to focus heat from the sun to fuel a system like the motor in OP, or a steam system. Both have proven to work, even on an industrial scale so having an at home generator is for sure do able.
The nice thing is that, its more resistant to weather, lower maintenance, takes less space, and in the absence of the sun, these methods can run on traditional fuels as well such as alcohol.

Id like to see where every home has it own electrical power production, much in the way we have a furnace for heat production.
As our devices get smaller, and we switch to things like LED light, it is for sure doable to produce enough energy for daily use, and some to store and to supplement the grid.

Speaking of the grid, the other nice thing is that, in the case of a natural disaster, power wont be knocked out across entire areas, loss of power would be on an individual bases.

Ephemeral (ID: 8b0571)Country code: dk, country type: geoip, valid: 1  334461

>>334453
>I think it would be more efficient, especially at the moment, to focus heat from the sun to fuel a system like the motor in OP, or a steam system. Both have proven to work, even on an industrial scale so having an at home generator is for sure do able.
>The nice thing is that, its more resistant to weather, lower maintenance, takes less space, and in the absence of the sun, these methods can run on traditional fuels as well such as alcohol.
is the energy output of a system like this equal to photovoltaic panels?

That's a fun idea. Sounds like a lot of troubleshooting work, though, lol.

Mk17!!Trixie (ID: 455944)Country code: us, country type: geoip, valid: 1  334464

File: 1568235443874.png (318.78 KB, 566x484, 465989897845.PNG)

>>334461
>is the energy output of a system like this equal to photovoltaic panels?
The energy output is equivalent to any standard power plant, its just a different fuel source being used.
The question is, is it as efficient?
And yes, in fact it is. Photovoltaic is about 20% efficient in turning heat radiation into useable electricity, where focused solar gets to be around 30%. But obviously these figures will change as technology evolves.
The other question is, is it cheaper?
And as a matter of fact, no, not at the moment.
Solar pannels are marketed better, and simple to use, so they have come down in price substantially compared to focused solar, which isnt something you can buy at the hardware store, and is normally deployed on an industrial scale such as full scale power plants.
https://en.m.wikipedia.org/wiki/List_of_solar_thermal_power_stations

So, as it stands, photovoltaic is better for powering your garden lights, and concentrated solar is better for powering a city.
And because solar is better for your garden lights, it sells more, which brings costs down while also funding more R&D.

I think, on the scale of a single house generator, i would bet concentrated solar would probably be the more efficient way, when considering space requirements and heat storage. I dont discount solar panels becoming smaller, and more efficient in the future though. I also expect energy storage batteries to evolve a lot too.

The cool thing about a Stirling engine, and why people are getting interested again is because they only need a temperature difference to work.
So say, placed in the arctic over a geothermal heat source, the contrast in the cold air verses the volcanic heat, could keep it running indefinitely.
Same with if you installed one on your roof, the temperature difference inside and outside your home would keep it powered, because you are just displacing hot air.

>That's a fun idea. Sounds like a lot of troubleshooting work, though, lol.

The technology is very well understood, and has been around since the 1800s, also, like i said, it has been deployed on commercial industrial scales. It just needs to be scaled, and marketed.
The other big thing about solar panels that make them market friendly is that they are completely silent, where an engine like the Stirling, while silent in operation, still makes the clickity clack noises you would expect from any moving equipment.
This post was edited by its author on .

Anonymous (ID: 1a0a87)Country code: stallman.png, country type: customflag, valid: 1  334465

Solar collectors are a cool idea.

https://www.dailymotion.com/video/x296paj

Mk17!!Trixie (ID: 455944)Country code: us, country type: geoip, valid: 1  334466

File: 1568236723864.png (272.33 KB, 521x770, Screenshot_20190610-113353_1.p…)

>>334461
The other thing about solar concentration vs photovoltaic at the moment is that, when the clouds come or night falls, photovoltaic stops, but, since you're using solar concentrate to transfer the heat to something else, say, a copper coil filled with salt water, that something else with retain its heat and continue to power your generator, even after the sun is gone.

Again, solar panels and electrical storage are improving rapidly, so who knows what 5 years from now will look like.

Batt tech i expect to skyrocket as electrical cars become more popular.
Its really all about marketability.

>>334465
You get 10 points for Dailymotion and 10 for Thunderbirds.

Anonymous (ID: 1a0a87)Country code: stallman.png, country type: customflag, valid: 1  334475

>>334465
They reused the solar collector disaster for the pilot of the CGI series.

https://www.dailymotion.com/video/x3zl5m6

Damn whoever decided to cancel the New Captain Scarlet so soon.

🦊 (ID: fceb8b)Country code: windows9x.png, country type: customflag, valid: 1  334589

>>334445
it doesn't get love because it sucks and is just a novel way of demonstrating thermodynamic laws
This post was edited by its author on .

Tracer Bullet (phone) (ID: b733db)Country code: us, country type: geoip, valid: 1  334590

File: 1568295979508.png (5.83 KB, 125x91, 1568283327374.png)

I think it would be nice to at least start a Dyson swarm in the next 100 years.
This post was edited by its author on .

Wheat (ID: 47ea2f)Country code: us, country type: geoip, valid: 1  334592

No mention of the Gotland Class submarine? It was all the rage a few years ago.

Mk17!!Trixie (ID: 455944)Country code: us, country type: geoip, valid: 1  334596

File: 1568298065559.png (1018.16 KB, 1358x1253, 1532988722151.png)

>>334592
I've been looking for an avenue with which to bring it up actually.
But yes, swedish subs are a great example of how the Stirling engine can be put to practical use.
It also has an advantage of minimum noise production which is huge for a submarine.
Also nice that the water itself can be used as a heat sync to help drive the system.

Considering its an attack sub, i doubt they would use it as a novelty.

Mk17!!Trixie (ID: 455944)Country code: us, country type: geoip, valid: 1  334597

File: 1568298299822.png (252.57 KB, 430x482, 762762.PNG)

>>334590
I did ask for lofty visions, so you'll get no argument from me.
Tbh, though i know what the concept of a Dyson sphere is, im not up on any practical engineering that has been done concerning them.
Maybe something to look into.

a lost pony !piNKiEPie. (ID: 5d6e67)Country code: us, country type: geoip, valid: 1  334602

File: 1568301575551.jpg (73.36 KB, 1000x1000, 11f4e8912aa81e84d038a0.jpg)

>>334597
>dyson sphere

Turns out it sucks.


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