DIY thermoacoustic Stirling engine for reliable self made cheap energy to go off grid

Описание: Here I show you the finishing touches to my thermoacoustic Stirling engine.

It is built after the book "Introduction to thermoacoustic Stirling engines" and the ideas of Jaime Gros et al. from Nebrija University.

It is an initial test machine to gain experience and then gradually build larger and more powerful engines.

The thermoacoustic cycle requires no moving parts and its great reliability and durability make it ideal for supporting our solar plant.

So I would like to generate cheap energy with the self-built DIY micro CHP in order to become off-grid as quickly as possible.

My attempts to support our energy supply with wood or self-produced biogas during periods of low sunshine made my Stirling generators with different drive mechanisms like the rhombic drive more and more complex.

The relatively new concept of the thermoacoustic Stirling engine is a radical simplification of the Stirling cycle.

Movable mechanical components are only required to utilise the thermoacoustic energy generated.

In the last two videos, I presented the thermoacoustic Stirling engine and showed the production of the first required parts.

Now all that was missing was the regenerator and a few little things and I could finally start the first test run.

Of course, I also had to deal with setbacks and problems.

At first, I carried out initial tests with provisional set-ups.

After I made a proper power extraction unit and made several changes to the feedback loop, the regenerator and the general settings, I finally had my first successful test run.

The first big step has been taken, a working prototype on which I can gain practical experience.

Of course, the power output is not high with such a small and simple machine, but I can experiment with what brings more performance to plan the next more powerful engine.

I have a lot of improvements planned and am already thinking about a larger version.

The next variant will probably be another low-pressure borosilicate glass machine with a larger volume to study the differences and effects of the changes.

I also have to delve deeper into the complex thermoacoustic theory to be able to plan improvements successfully.

Before I carry out further test runs, I would like to measure the thermoacoustic and mechanical performance using pressure sensors, frequency measurements and a linear generator in order to be able to carry out meaningful optimization tests.

I don't yet know which type of linear generator is best suited for this.

If you have any suggestions as to which linear generator offers advantages or how I can improve the thermoacoustic Stirling engine, please write them in the comments!

Many thanks for watching!



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