Thermoacoustic Stirling engine part 2: CAD drawings , 3D Models and all details to build your own !
My engines 7:30
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I show the complete plans, CAD drawings, 3D models and all details to build the powerful thermoacoustic Stirling engine with 3D printing to generate your own energy.
If you want to support me you get access to exclusive content: https://www.patreon.com/c/Stirlingengines https://www.youtube.com/channel/UCie-_1q_BTL_cpPN_6f0gHw/join
Thanks to Baptiste (alias OfficialyMax) we now have a Discord server: https://discord.com/invite/TDABS5z2mT
It would be very nice if we could discuss there everything about Stirling engines, 3D printing and more, thank you very much Baptiste.
Here is the link to the 3D models and CAD drawings: https://drive.google.com/drive/folders/1nJs53IbHMNGgsEBUu66cx8w5Pxiq61Ep?usp=sharing
My homemade thermoacoustic Stirling engine has to produce enough energy from self-generated biogas to make us, along with our solar power plant, independent of energy suppliers.
To achieve faster and better engine development, I would like to start this as an open-source project together with you.
For this, I will show here now all the dimensions and the entire structure of the thermoacoustic engine in detail.
The idea is to develop a simple, reliable, and efficient power plant that anyone can build with basic tools.
For a long time, I have been producing my own energy, using my conventional Stirling engines and self-generated biogas.
However, my mechanical Stirling engines are too difficult, complicated, maintenance-intensive and therefore too expensive.
The elegant concept of the thermoacoustic motor requires no moving parts except for energy extraction and is therefore ideal for a simple and reliable DIY mini power plant that anyone can build.
The underlying thermoacoustic theory is quite complex, and optimization with DeltaEC and Computational Fluid Dynamics (CFD) requires a great deal of training or experience in this field.
To enable everyone to participate in developing the thermoacoustic Stirling engine, I will describe all the dimensions and the exact construction process here.
There is still a lot of potential here, and optimization with DeltaEC and CFD, together with pressure charging, promises a very big increase in performance.
The thermoacoustic Stirling engine consists of the thermoacoustic core, the feedback loop and the power extraction unit.
The feedback branch is a passive acoustic network of volumes and lengths with different geometries.
The feedback loop is a wave guide and redirects the powerflow back to the core and adjusts the phase between pressure and velocity as closely as possible to that of the traveling wave in the regenerator.
The feedback loop design is very important to the efficient integration of the traveling wave characteristic motion with the Stirling cycle performance.
So the design of the feedback loop is an important task for a successful engine.
The construction of the feedback loop is simple and easy.
All parts like flanges, elbows and the inertance and compliance themselves can be 3D printed or made from standard parts like hoses, copper elbows and tubes.
I made extensive tests with different engineering filaments and printing techniques and can now print airtight parts up to 12 bar or 175 psi pressure.
This rapid prototyping is essential for a fast development.
My first feedback loop consists of an inertance with 25 mm diameter and a length of 300 mm and a compliance with 30 mm diameter and a length of 370 mm both made of reinforced pressure hoses.
In principle, the values for inertance and compliance are not extremely critical for the engine just to run; however, determining the optimum settings is difficult and requires calculation using simulation and experimental testing.
My second feedback loop consists of a 3D printed much shorter but wider compliance and an inertance with 25 mm diameter and a length of 300 mm.
Although the design was estimated rather than calculated, it still resulted in a slight improvement in performance.
If designed correctly, the feedback loop can lead to a significant increase in performance and efficiency.
Correct calculations, simulations and extensive testing are definitely worthwhile in the case of inertance and compliance.
To me, getting to understand Git and GitHub seems to involve just as much effort as building a website with its own development forum.
With a dedicated forum and corresponding development pages, it would be possible to have more freedom and design everything exactly as required.
I am very interested to hear your opinions and ideas.
Thank you very much for your interest, and I look forward to your comments and ideas!
Thanks for the background music:
Song: Jim Yosef - Eclipse [NCS Release]
Music provided by NoCopyrightSounds
Free Download/Stream: http://ncs.io/eclispe
Watch: • Jim Yosef - Eclipse | House | NCS
If you want to support me you get access to exclusive content: https://www.patreon.com/c/Stirlingengines https://www.youtube.com/channel/UCie-_1q_BTL_cpPN_6f0gHw/join
Thanks to Baptiste (alias OfficialyMax) we now have a Discord server: https://discord.com/invite/TDABS5z2mT
It would be very nice if we could discuss there everything about Stirling engines, 3D printing and more, thank you very much Baptiste.
Here is the link to the 3D models and CAD drawings: https://drive.google.com/drive/folders/1nJs53IbHMNGgsEBUu66cx8w5Pxiq61Ep?usp=sharing
My homemade thermoacoustic Stirling engine has to produce enough energy from self-generated biogas to make us, along with our solar power plant, independent of energy suppliers.
To achieve faster and better engine development, I would like to start this as an open-source project together with you.
For this, I will show here now all the dimensions and the entire structure of the thermoacoustic engine in detail.
The idea is to develop a simple, reliable, and efficient power plant that anyone can build with basic tools.
For a long time, I have been producing my own energy, using my conventional Stirling engines and self-generated biogas.
However, my mechanical Stirling engines are too difficult, complicated, maintenance-intensive and therefore too expensive.
The elegant concept of the thermoacoustic motor requires no moving parts except for energy extraction and is therefore ideal for a simple and reliable DIY mini power plant that anyone can build.
The underlying thermoacoustic theory is quite complex, and optimization with DeltaEC and Computational Fluid Dynamics (CFD) requires a great deal of training or experience in this field.
To enable everyone to participate in developing the thermoacoustic Stirling engine, I will describe all the dimensions and the exact construction process here.
There is still a lot of potential here, and optimization with DeltaEC and CFD, together with pressure charging, promises a very big increase in performance.
The thermoacoustic Stirling engine consists of the thermoacoustic core, the feedback loop and the power extraction unit.
The feedback branch is a passive acoustic network of volumes and lengths with different geometries.
The feedback loop is a wave guide and redirects the powerflow back to the core and adjusts the phase between pressure and velocity as closely as possible to that of the traveling wave in the regenerator.
The feedback loop design is very important to the efficient integration of the traveling wave characteristic motion with the Stirling cycle performance.
So the design of the feedback loop is an important task for a successful engine.
The construction of the feedback loop is simple and easy.
All parts like flanges, elbows and the inertance and compliance themselves can be 3D printed or made from standard parts like hoses, copper elbows and tubes.
I made extensive tests with different engineering filaments and printing techniques and can now print airtight parts up to 12 bar or 175 psi pressure.
This rapid prototyping is essential for a fast development.
My first feedback loop consists of an inertance with 25 mm diameter and a length of 300 mm and a compliance with 30 mm diameter and a length of 370 mm both made of reinforced pressure hoses.
In principle, the values for inertance and compliance are not extremely critical for the engine just to run; however, determining the optimum settings is difficult and requires calculation using simulation and experimental testing.
My second feedback loop consists of a 3D printed much shorter but wider compliance and an inertance with 25 mm diameter and a length of 300 mm.
Although the design was estimated rather than calculated, it still resulted in a slight improvement in performance.
If designed correctly, the feedback loop can lead to a significant increase in performance and efficiency.
Correct calculations, simulations and extensive testing are definitely worthwhile in the case of inertance and compliance.
To me, getting to understand Git and GitHub seems to involve just as much effort as building a website with its own development forum.
With a dedicated forum and corresponding development pages, it would be possible to have more freedom and design everything exactly as required.
I am very interested to hear your opinions and ideas.
Thank you very much for your interest, and I look forward to your comments and ideas!
Thanks for the background music:
Song: Jim Yosef - Eclipse [NCS Release]
Music provided by NoCopyrightSounds
Free Download/Stream: http://ncs.io/eclispe
Watch: • Jim Yosef - Eclipse | House | NCS
Playback is via YouTube's official embedded player. Data from YouTube; Exumo is not affiliated with YouTube.