That was the idea. I tried several different high efficiency heat exchangers, but none of them would transfer the heat fast enough to the air mass allowing turbojet operation.
It's a parabolic curve. Broken up into 37 hexagonal segments. I used Rhino 3D modeller to workout the math by projecting a hexagonal map over the pabolic dish and then CNC casted the 6 primary segments (+1 center) and repeated 6x to get 36 + 1 center. Took months and a few $k to build the first unit. Looking to sell my prototype castings for $900 (37 segments - this is less than my cost to build). Thanks
Beautiful dish! Your fabrication skills are top notch. I see you have listed CNC programming as a skill, do you have a shop? If so take a look at steam. It's complex, and dangerous, but really the only way you'll get efficient usable power generation. The reason for steam is the recompression cycle of re-condensed water is 100%. Stirling engines loose almost all power generated in the power stroke during recompression.
This is very very cool stuff. Where you able to determine the efficiency of your heat exchanger and turbine before it blew up? I plan to build something similar and was curious. I built a power turbine a while back, its in my videos...check it out.
It didn't blow up, it just didn't work as expected. I never got the chance to measure the exit temperature of the air to determine the efficiency...but it couldn't have been very high. Tried to find your turbine video...only found cars. Turbochargers make great turbojets. Built a few myself. I'm looking into steam or a closed system like ammonia to drive a turbine. Good Luck.
@geomagnetdotnet What the hell is the purpose of making a video without a presentation and explanation.All i see you do is walking around a parabolic dish.D-D-D-DUH ! ! !
Its linked to another site which provides the information to visitors that I invite to review the project and technology. You see this video because I made it public. I dont need to explain anything else to you.
@geomagnetdotnet The problem is steam is illegal in most locals unless you are a licensed steam engineer. So steam is out and hot air is the only lawful game in town.
@TalksWithDirt The problem is steam is illegal in most locals unless you are a licensed steam engineer. So steam is out and hot air is the only lawful game in town.
Thermodynamic limitations will limit you to a max of ~1kw useful power out of such a system. If you're really good you'll get this 3500W(1-(Tc/Th)). Where 3500W is the raw thermal input, Tc is the temp in Kelvin or Rankines, of the working gas at the output of the power cycle, and Th is the temp of the gas at the input of the power cycle. The power you extract from the gas will lower it's temperature.
search wikipedia for High-temperature electrolysis and you will see what I am talking about, I tried to post the link a dozen different ways but the jerks at gootube block it.
Interesting. Looks like the materials are very exotic and probably are consumed in the process. I've always liked the idea of converting solar energy into a portable/storable commodity (even distilling water is more valuable than trying to make electricity). Who know, maybe this will be the fuel of the future. Thanks for the info.
fiberglass hexagons with aluminum vapor coated mylar. (Basically window tint, without the transparency). Not as easy to work with as expected. Even the slightest curve causes buckling, unlike window tint which can be worked out with heat and a squeegee, this was problematic. Next generation will have this problem solved (somehow).
I think that might be as hot as what the were using to separate hydrogen out of water rapidly and if you could store it its worth about $10/gal. it is dangerous thou as I am sure you already know.
Hmmm. I don't know about that. It's quite common to have steam that is 1000+ deg for industrial application. I've never heard of water disassocaiting at high-temp (except at plasma temp which creates a sloppy H - OH compound a.k.a "bingo fuel". Not quite the same as H2 + O reaction).
It's not heat which separates hydrogen out of water, it is current. "Electricity" Different comcept. If you push more amps into an Hh0 fuel cell the obvious outcome is more production. (if your parts can handle it)
what is that infernal noise? and what are we looking at?
DanFrederiksen 9 months ago
That was the idea. I tried several different high efficiency heat exchangers, but none of them would transfer the heat fast enough to the air mass allowing turbojet operation.
geomagnetdotnet 1 year ago
Could this be used to project energy to a black plenum? I would think it would generate some very hot air for home heating.
chuckbyf1 1 year ago
need to know what area you guys live and please do post your findings please, but in more detail...thanks...more power to ya..no pun intended
s4a4v4y 1 year ago
I didn't know the sun was so freakin NOISY! What the hell is that?
unambitious 1 year ago
It's a parabolic curve. Broken up into 37 hexagonal segments. I used Rhino 3D modeller to workout the math by projecting a hexagonal map over the pabolic dish and then CNC casted the 6 primary segments (+1 center) and repeated 6x to get 36 + 1 center. Took months and a few $k to build the first unit. Looking to sell my prototype castings for $900 (37 segments - this is less than my cost to build). Thanks
geomagnetdotnet 1 year ago
Can you tell me how to work out the angles of the joints between the panels, and are the mirror panels curved or flat?
MilesB1975 1 year ago
yes good idea.......may be grow big......o'k
nasrudinist 2 years ago
Beautiful dish! Your fabrication skills are top notch. I see you have listed CNC programming as a skill, do you have a shop? If so take a look at steam. It's complex, and dangerous, but really the only way you'll get efficient usable power generation. The reason for steam is the recompression cycle of re-condensed water is 100%. Stirling engines loose almost all power generated in the power stroke during recompression.
TalksWithDirt 2 years ago
Thanks. I have to agree. Looks like a better path.
geomagnetdotnet 2 years ago
This is very very cool stuff. Where you able to determine the efficiency of your heat exchanger and turbine before it blew up? I plan to build something similar and was curious. I built a power turbine a while back, its in my videos...check it out.
turbomoore 2 years ago
It didn't blow up, it just didn't work as expected. I never got the chance to measure the exit temperature of the air to determine the efficiency...but it couldn't have been very high. Tried to find your turbine video...only found cars. Turbochargers make great turbojets. Built a few myself. I'm looking into steam or a closed system like ammonia to drive a turbine. Good Luck.
geomagnetdotnet 2 years ago
i'm lookin into closed loop steam turbine systems , love your dish though ,
trainstation21 2 years ago
@geomagnetdotnet What the hell is the purpose of making a video without a presentation and explanation.All i see you do is walking around a parabolic dish.D-D-D-DUH ! ! !
jravenus 1 year ago
@jravenus
Its linked to another site which provides the information to visitors that I invite to review the project and technology. You see this video because I made it public. I dont need to explain anything else to you.
geomagnetdotnet 1 year ago
@geomagnetdotnet The problem is steam is illegal in most locals unless you are a licensed steam engineer. So steam is out and hot air is the only lawful game in town.
astrialkil 1 year ago
@TalksWithDirt The problem is steam is illegal in most locals unless you are a licensed steam engineer. So steam is out and hot air is the only lawful game in town.
astrialkil 1 year ago
How many watts are you aiming at with a unit that size?
AccelLearn 2 years ago
3500W. But for now it produces 0.
geomagnetdotnet 2 years ago
Thermodynamic limitations will limit you to a max of ~1kw useful power out of such a system. If you're really good you'll get this 3500W(1-(Tc/Th)). Where 3500W is the raw thermal input, Tc is the temp in Kelvin or Rankines, of the working gas at the output of the power cycle, and Th is the temp of the gas at the input of the power cycle. The power you extract from the gas will lower it's temperature.
TalksWithDirt 2 years ago
search wikipedia for High-temperature electrolysis and you will see what I am talking about, I tried to post the link a dozen different ways but the jerks at gootube block it.
OnsiteRepair 2 years ago
Interesting. Looks like the materials are very exotic and probably are consumed in the process. I've always liked the idea of converting solar energy into a portable/storable commodity (even distilling water is more valuable than trying to make electricity). Who know, maybe this will be the fuel of the future. Thanks for the info.
geomagnetdotnet 2 years ago
want to join my building concentrated solar power ning group? check out my channel
eurogoldexchange 2 years ago
You can hear it does generate usable power..
eurogoldexchange 2 years ago
what´s that noise? and where you get that hexagon mirrors?
SpeedMetal4635 2 years ago
That or boron carbide. Nevertheless, low on funding right now. Maybe this summer I'll have some money saved to resume.
geomagnetdotnet 2 years ago
I'm glad there are still backyard inventors out there tinkering around with stuff - keep it up
zenforaday 2 years ago
from what material are the reflectors?
CrazyTurkBoy 2 years ago
fiberglass hexagons with aluminum vapor coated mylar. (Basically window tint, without the transparency). Not as easy to work with as expected. Even the slightest curve causes buckling, unlike window tint which can be worked out with heat and a squeegee, this was problematic. Next generation will have this problem solved (somehow).
geomagnetdotnet 2 years ago
Temperature?
ZhN2tube 3 years ago
+1200F
geomagnetdotnet 3 years ago
Handmade? Manual assemblage? In drawings I am interested.
ZhN2tube 3 years ago
It's made with a CNC machine...drawings wont do you much good if you don't have precision fabrication capabilities.
geomagnetdotnet 3 years ago
I think that might be as hot as what the were using to separate hydrogen out of water rapidly and if you could store it its worth about $10/gal. it is dangerous thou as I am sure you already know.
OnsiteRepair 2 years ago
Hmmm. I don't know about that. It's quite common to have steam that is 1000+ deg for industrial application. I've never heard of water disassocaiting at high-temp (except at plasma temp which creates a sloppy H - OH compound a.k.a "bingo fuel". Not quite the same as H2 + O reaction).
geomagnetdotnet 2 years ago
It's not heat which separates hydrogen out of water, it is current. "Electricity" Different comcept. If you push more amps into an Hh0 fuel cell the obvious outcome is more production. (if your parts can handle it)
luc59457 2 years ago
Very cool! I'd be really interested in seeing more about your dish's construction.
kheston 3 years ago
What do we hear running. Is it being powered by the Stirling alone? I'm just curious how much power you were able to generate.
moabsafari 3 years ago
This was a test run. It failed to produce any power. The noise is the vacuum cleaner motor which duals as the starter and the generator.
geomagnetdotnet 3 years ago