This video contains some silliness, but does at least demonstrate the possibility.
https://youtu.be/Z9Rt3XvO0C0
Hydrogen fuel cells can be expensive and storing power in batteries has various drawbacks.
I could see a Stirling engine / Hydrogen energy system being practical under some circumstances.
Stirling engine / Hydrogen storage system
Re: Stirling engine / Hydrogen storage system
This proposed DIY method of "safe" Hydrogen storage is, apparently do-able but also probably a bit more difficult than it sound in the video from what additional research I've been able to do.
For example, apparently the substance needs to be vacuum dried and then cycled several times before it actually works. That is, the vacuum helps open the pores, then hydrogen gas needs to be forced into it under pressure and released by heating a few times to get the stuff broken in and working well.
I have a kiln, vacuum pump, some cylinders, and just founds some bags of urea at the local garden shop so thought I might give this a try.
I'm adding it to my long to-do list anyway.
https://youtu.be/7LN1iD6fR2E
For example, apparently the substance needs to be vacuum dried and then cycled several times before it actually works. That is, the vacuum helps open the pores, then hydrogen gas needs to be forced into it under pressure and released by heating a few times to get the stuff broken in and working well.
I have a kiln, vacuum pump, some cylinders, and just founds some bags of urea at the local garden shop so thought I might give this a try.
I'm adding it to my long to-do list anyway.
https://youtu.be/7LN1iD6fR2E
Re: Stirling engine / Hydrogen storage system
There is a rather astonishing demonstration of a Stirling engine running on hydrogen gas. Or heat from hydrogen gas but without a flame.
The outside of the displacer chamber is coated with some kind of catalyst.
The demonstration is well into the video about 23 minutes almost at the end
Here he's demonstrating that there is no heat or flame at the gas nozzle. Heat is generated directly on the surface of the displacer chamber by the catalyst.
https://youtu.be/Bd_yrSldFWw
Seems like such a method of delivering heat to the engine would be the ultimate in efficiency.
Not the way he's going about it waving the nozzle around.
I think there could probably be some backflash ignition if the catalyst were allowed to get hot enough.
The outside of the displacer chamber is coated with some kind of catalyst.
The demonstration is well into the video about 23 minutes almost at the end
Here he's demonstrating that there is no heat or flame at the gas nozzle. Heat is generated directly on the surface of the displacer chamber by the catalyst.
- Compress_20240508_013645_5346.jpg (19 KiB) Viewed 17 times
https://youtu.be/Bd_yrSldFWw
Seems like such a method of delivering heat to the engine would be the ultimate in efficiency.
Not the way he's going about it waving the nozzle around.
I think there could probably be some backflash ignition if the catalyst were allowed to get hot enough.
Re: Stirling engine / Hydrogen storage system
There is an Australian(?I think) company getting into this hydrogen heat. Catalyst technology big time.
https://youtu.be/qng_UEQSY04
https://youtu.be/3Lyfn5AooSg
Articles I've found though say the catalyst used is "secret", proprietary, patented.
Earlier in the previous above video he shows what looks like an ordinary automotive catalytic converter doing something similar.
Can I get a small jar of this catalyst paste from eBay or Amazon or someplace to paint my Stirling engine?
Not likely any time soon I'm afraid.
https://youtu.be/qng_UEQSY04
https://youtu.be/3Lyfn5AooSg
Articles I've found though say the catalyst used is "secret", proprietary, patented.
Earlier in the previous above video he shows what looks like an ordinary automotive catalytic converter doing something similar.
Can I get a small jar of this catalyst paste from eBay or Amazon or someplace to paint my Stirling engine?
Not likely any time soon I'm afraid.