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@marsfreelander5969

22 күн бұрын

i see problems with this and i will list them below 1 overheating of solar panels 2 difficulty to start in winter 3 fouling of system with impure fuel 4 risk of exploding/out of control burning with damage 5 HOW DO YOU TURN OFF MOLTEN SODIUM

@HWKier

21 күн бұрын

I'm old enough to have lived through the era of the disposable blade, single and double-blade razors. My modern, multi-blade is much better. It lasts for months. Going back to the old way seems to me to be a scam. We have gone beyond disposable blades. Let's not go back.

@MrMonkeybat

21 күн бұрын

@@marsfreelander5969 1 Gallium arsenide is the semiconductor that works best at high temperatures, and is protected by an infrared mirror and likely a vacuum gap. The back side could also be cooled by the incoming air. 2 Since when do bunsen burners and gas ovens have trouble starting in winter? This will much more reliably start in cold weather than a piston engine, and can help warm the batteries in a hybrid vehicle. 3 A modern burner combusts fuel much more completely and cleanly than the explosions in a piston engine, there is a constant flow with no moving parts in the way. A piston engine is much more vulnerable to fouling from impure fuel. 4 No more so than any other vehicle with a fuel tank. 5 Like a sodium vapor lamp it is likely contained in a chamber. When you turn off the burner it cools down.

@LoanwordEggcorn

21 күн бұрын

8:15 No there's not only two possibilities. The salt is inside a double walled, sealed sapphire tube. This is an interesting invention, BUT WE NEED TO STOP BURNING FOSSIL FUELS, AND HYDROGEN AT THIS POINT IS A BORDERLINE SCAM. 14:39 The waste heat from regular internal combustion engines is too low energy to be used efficiently this way. Thermodynamics.

@m4rvinmartian

19 күн бұрын

*You should be embarrassed for posting this video.*

"Solid State Engine" - sounds more exciting words than photovoltaic gas lantern.

@tigerstallion

10 күн бұрын

also not an engine until you strap an electric motor or some form of mechanical output to it.

@mnomadvfx

7 күн бұрын

Exactly. It's not solid state either. It uses a fuel which means it has a liquid or gas component.

@rogerbartley2225

7 күн бұрын

Was going to say Blowtorch Solar Panel, You said it much better 🙂

@HullioGQ

7 күн бұрын

I'll wait to see work in real life cause i have seen enough of Elizabeth Holmes' Theranos.

@amoo1313

4 күн бұрын

Hmm... interesting. Did you mention the fuel that is used? fossil fuel? or Hydrogen? would it in this case not be easier/ more efficient to use Hydrogen cells?

99% chance its a scam

@stuartburns8657

22 күн бұрын

I'll raise you to 99.9% scam

@gamingSlasher

22 күн бұрын

but it sounds so good....

@Embassy_of_Jupiter

22 күн бұрын

The technology behind it is proven to work at 40% efficiency if you get temperatures north of 2000°C the issue is just if it's cheap enough, small enough and reliable enough

@NeonNijahn

22 күн бұрын

It's not even a good one.

@mj8495

22 күн бұрын

What my grandfather said about computers... some ideas are before their time 😊

I'm no photovoltaics specialist, but I worked in a lab at a university where the people next door worked on micro-scale heat exchangers, and one of their projects was related to recovering waste heat from Concentrated Photovoltaic Cells (CPV), a system where a relatively cheap, large Fresnel-type lens diverts sunlight into a relatively expensive, small PV cell. The problem with that is that the cell efficiency was inversely proportional to its temperature, which is why they were trying to match these tiny heat exchangers with the tiny PV cells and use that heat to convert alcohol and plant oil into biodiesel. This engine obviously works at high temperatures. Low-Pressure Sodium Vapor lamps work at about 300°C, and the assembly seems too compact for meaningful insulation, so these cells would be working at high, temperatures, and therefore at lowered efficiencies. I'd wait for independent confirmation of these numbers before believing these are even in the correct order of magnitude.

@AdamMclardy

20 күн бұрын

That’s exactly the issue. This would straight up melt these cells

@drillerdev4624

20 күн бұрын

My first thought was exactly wether this sodium lamp an cell system could be used to discharge excess heat from traditional PVs (improving their efficency) while at the same time obtaining some more electricity out of it. Obviously your lab roommates were smarter than me, so I guess it wasn't doable/cheap enough.

@snorttroll4379

19 күн бұрын

just insulate the photovoltaic cells behind a double window. run cool air through the cell or with a vapour chamber

@asificam1

19 күн бұрын

IF they said 15% or 20% I would be drooling. Modern Thermoelectric generator (TEG) modules are at most 5%, some TEG modules claim up to 15%, but when people claim above 50%, I get red flags. Besides, this thing is competing against Thermoelectric generators and maybe fuel cells depending on fuel quality, so it seems like someone is trying to get people to invest into a hole... not my thing.

@m4rvinmartian

19 күн бұрын

*I mean... a woman invented this dude. You just spent more time pointing out why it won't work, than she did, to make it "work".* This is so stupid, she had to be a drop out to not know the laws of physics says this is seriously impossible.

So you get an animation and an explanation. Still seems sus to me. Thermal efficiency claims are unbelievably high. Extraordinary claims...yadayadayada.

I've been trying to conceive of an efficient "fuel into electricity" system for years, so I am also VERY skeptical that you can convert the energy twice and get even close to 80% efficiency. But I hope I'm wrong! I'd love an electric gas motorcycle that can go 1000miles on 4 gallons of gas 😊

@TwoBitDaVinci

22 күн бұрын

yes!!! totally agree

@prophetzarquon1922

12 күн бұрын

Watch out for the ultra-hot exhaust cooking everything within a yard of it...

@heartflame503

Күн бұрын

@@prophetzarquon1922 there is a heat exchanger at the flamey end .. so the gas coming out will be cooler than your room heater.

Solid state combustion engine just sounds like a fuel cell with extra steps

@ticthak

22 күн бұрын

BUT- nearly as high efficiency with more robust components, since there aren't currently any solid-state membrane fuel cell designs of large size.

@anydaynow01

22 күн бұрын

Sounds like it is better tuned, more efficient, produces more useful higher gradient waste heat, and doesn't have the headache of storing and transporting H2.

@anydaynow01

22 күн бұрын

@@ticthak Yep and the control systems should be much simpler too so maintenance would a lot less with a longer reactor/generator life. This is quite interesting actually. Use excess renewables to create stored chemical energy, the burn that energy in the reactor for emergencies/peak shaving and seasonal use. I hope they can get it to work at an industrial scale!

@AmaroqStarwind

22 күн бұрын

@@anydaynow01 Fuel cells can be made for multiple fuel types

@geemy9675

22 күн бұрын

but actually has zero similarity because there is no chemical reaction besides the combustion that produces heat. fuel > heat > light > electricity VS fuel > electricity. I don't know how the plan to extract so much heat from combustion gases though near needs to move from the gas to the sodium, so the exhaust gases temperature will be above sodium vapor temperature (260°C/533K) if you want to extract lets say 90% heat you need to have a heat source about ~5000 C/K. It sounds like using exhaust gases in a hybrid car would hardly produce any sodium vapor or only with extremely low efficiency

Where does the heat go? If it is so efficient then the thing would not get hot. But there is a huge flame coming out of one end! I say BS. Total complete BS.

@jasonsilva9091

9 күн бұрын

It's solid state I your using heat your byproduct is cooling So there's still 30% of heat As gasoline burns at 1500° and peeks at 3900° so that's a lot of exercises heat now we need exhaust and cooling Also if this is as efficient as they say most likely it will be bought out and crushed

@sigmacentauri6191

8 күн бұрын

When a geet reactor is running efficiently its exhaust comes out close to ambient air temperature... soaking up heat to run a process can be done.

@sznikers

7 күн бұрын

Its 60% efficient so 40% ends up as waste heat in the form of hot exhaust gases just like in any other combustion engine. I'm not sure what is there that you don't understand...

@slo3337

7 күн бұрын

@@sznikers that's not what the picture is showing

@sznikers

7 күн бұрын

@@slo3337 video says they get 60% efficiency, animation shows hot exhaust gases (flames) leaving tube shaped device... 100% - 60% = 40% here are your flames

I feel like we’re going in circles. Burning something to make energy from a solar panel to charge something … uhhh

@YoutubeWatcher264

22 күн бұрын

And claiming it is at most 80%. LOL

@snake10566

22 күн бұрын

@@KZreadWatcher264 That's my issue. There are many steps here, each with losses.

@dianapennepacker6854

22 күн бұрын

For 10 kw per gram? (It looked like they listed under 4 liters in a graph. So volumetric is great unlike Hydrogen) That is on par with the best therotical batteries max potential! Lithium Air is said to be able to hold 12,300 watts per KG. So yeah. That is outstanding! I've already said TPV cells are the future. Or a part of it. For some applications. MIT just made some that capture heat at 2,000 celius, get better with more heat, and have more than 45% effiency. Basically the same as our best turbines! I say the future as in... The future is TPV cells plus nuclear or in ten years fusion! Sadly... I am super skeptical. Feel like the DoD would be on top of this. Just use sapphire... Oh yeah that is a great choice. So plentiful. Pretty cool if true, and I bet a ton of applications could benefit from this. TPV cells need more research. We waste so much heat, and potential energy. Having a part that captures that into electricity with no moving parts is a game changer for at least industrial purposes.

@2ndfloorsongs

22 күн бұрын

You left out the part where it burns green methane from whales.

@FLPhotoCatcher

22 күн бұрын

@@dianapennepacker6854 Actually, an ideal use case would be to power a house using wood as fuel, and use the waste heat to heat the house in cold weather, and heat water in all weather.

The only legit science in this episode is the shaver.

@BillHustonPodcast

22 күн бұрын

Haha! Only the advert here is truthful! 😂😂😂 💯%

@greghelton4668

22 күн бұрын

Actually the idea itself is solid, pun unintended. The fuel source would have to be really clean to avoid soot buildup. There might be applications where such a pin energy source to convert fuel to electricity is useful. Ships, big rigs, planes, etc.

@MrLardobutt

22 күн бұрын

those are legit, i want to get one of those, but damn they're expensive, but built to last

@loneIyboy15

22 күн бұрын

@@greghelton4668 If the idea works, then burning stuff to make electricity would still be the least efficient way of using it. Because at that point, really anything that heats up the salt is enough. And at that point, you may as well use a solar concentrator or something.

@Sekir80

22 күн бұрын

@@loneIyboy15 And said solar concentrator would be running on "free" energy, which is way better than using a fuel. But that's stationary power generation. This one is intended to move things, I guess.

I knew Danielle when she was doing her prior clean tech start-up, LightSail (grid scale energy storage). Unfortunately LightSail didn't beat out the battery tech that hit the market, and they folded. I think her use of "LightCell" as a trade name is a riff off of her old company's name.

@TwoBitDaVinci

22 күн бұрын

wow that's amazing, what are the odds!

I don't think exhaust gas from a regular engine would be hot enough to melt salt and make it glow bright. You definitely raised many interesting points that got us all thinking about it.

A pulse jet engine is a solid state internal combustion engine.

@Sekir80

22 күн бұрын

I have WW2 vibes. :D

@jef_3006

22 күн бұрын

Jets (and rockets for that matter) are not internal combustion engines. One side of the engine is open, so the combustion isn't internal

@pilotusa

22 күн бұрын

Pulse jets are not solid state since they have moving parts (the valve flaps which cause the "buzz" in buzz bombs). A ram jet is solid state.

@sockmonkey6666

21 күн бұрын

@@pilotusa Depends on the type of pulse jet. The Lockwood types have no moving parts.

@WarrenLacefield

20 күн бұрын

@@jef_3006 Yes, but this distinction seems almost academic nowadays. A fireplace is where combustion occurs; your chimney flue is where the exhaust goes. Is your furnace a jet or an "internal" combustion engine? Or are neither "engines"? (Producing heat is a form of "work" or is only force/motion "work?") In a rocket, combustion occurs in the nozzle to accelerate the exhaust for thrust as it leaves the nozzle. In an ICE car, the values are simply little doors that open and close for inlet air followed by exhaust. Actually more of a "digital" or step-by-step combustion/exhaust cycle rather than a more analog/continuous flow-controlled system.

So many issues with this thing I don't even know where to start. The pollution alone would be extremely difficult to control. It reminds me of cheap Chinese diesel heaters, actually. * Pollution. There is no way to fully burn the fuel across a swath of power levels. They might be able to fully burn the fuel at a particular power level. * Backpressure from dealing with exhaust products to remove unwanted byproducts. * Efficiency of 60% with a hot exhaust? Not even possible. And 80% combined-cycle? I don't think that's possible either. * The high temperature of the system will greatly shorten the equipment lifespan, let alone the solar cells. * Build-up of byproducts on heat exchanger surfaces. * Multiple conversion steps... another nail in the "efficiency" coffin. The biggest red flag is having multiple conversion steps (fuel to heat, heat to light, light to cell, cell to electricity) and still claiming extreme efficiencies. That gets into "sell me the Brooklyn bridge" territory. I don't think this thing is real. -Matt

@loneIyboy15

22 күн бұрын

You forgot the biggest one: Even if the system works, burning gasoline is the worst way to heat table salt. Solar Concentrators, geothermal, nuclear, and even standard power plants would be better served integrating this than cars.

@mnntropy5615

22 күн бұрын

Similar to my first thought: How hot do those EV cells get exactly? And how efficient are they at that temperature and how long do they last at that temperature. Too many steps and energy conversions. Buildup of byproducts reduces efficiency fast. I know, for the fuel that is not burned in the first combustion, we could just add an afterburner for additional thrust out of the exhaust. Hey, it works for military jets, so why not here.

@slom2529

22 күн бұрын

Jet car lmao

@MrMonkeybat

22 күн бұрын

A modern burner for an external combustion engine consumes fuel much more completely and cleanly than the explosions in an internal combustion piston engine. A generator for a plug in battery hybrid vehicle does not need a variable power output.

@mitchellcouchman1444

22 күн бұрын

As soon as I heard the efficiency figure I was like this is BS. Any basic understanding of how complex a jet engine is and you just laugh. You can't just have, "combustion", you need a compressor or to used a compressed oxidant (a rocket). The compressor alone robs more energy than he says will be lost in the full cycle. Lastly how on earth will you cool it enough for most of the energy to not be lost as heat?

The best video of yours I've watched. This should give us all hope for new technologies becoming a part of the future.

The exhaust gases carries out energy from the system in 3 forms. 1) Sensible heat, expressed in the temperature of the gases, which the thing will try to recover as much as possible (but no chance to recover fully), 2) Latent heat: any fuel with hydrogen content mixed with air and burned will produce water molecules, and there is significant energy absorbed just in the process of water vaporization (not stored in temperature but in the gaseous state), and this latent heat will be lost unless we have a condenser, 3) Kinetic energy of the outgoing exhaust gases, which could be partially recovered with yet another device, a turbine. I see too many conversions needed to even considering a 60%+ efficiency.

Propane camping light check, solar panel check, save the planet, done 😂

@luisrubalcava6331

22 күн бұрын

China just recently released solid state battery EVs for sale so the US government decided to quadruple tariffs on EVs

@Rhiawhyn

19 күн бұрын

@@luisrubalcava6331 Citation needed.

@testboga5991

18 күн бұрын

You forgot the table salt

@antoinepageau8336

18 күн бұрын

@@testboga5991Shoot, I knew i was forgetting something.

@marilynlucas5128

14 күн бұрын

I guess. A propane tank to light up cerium oxide mantle and then use the light to generate electricity using a solar panel?

Could this work? My sliver of engineering knowledge says 'Maybe.' But I'm really doubting their claimed efficiency numbers. Build one, Let someone else test it, and I'll believe it.

@WolfeSaber9933

22 күн бұрын

That's what time is.

@RockSolitude

21 күн бұрын

Local man discovers engineering for the first time. No, shit sherlock. This is just a concept right now.

@m4rvinmartian

19 күн бұрын

No dude. A woman invented it, lol. This is so stupid.

@sheilaolfieway1885

19 күн бұрын

the whole hishschool dropout thing sounds like one of those 'fake miracle' stories they use for scams.

@TheAnachronist

18 күн бұрын

This video overstates what Lightcell themselves claim as far as efficiency, which is frustrating. The founder of the company, @danielle_fong, tried commenting to set the record straight, but for some reason the KZread algorithm has hid here reply.

I like how your mind works on problem solving…. I spent a weekend with a heating engineer who would be great to capture the waste heat from the car engine using phase change materials… so that when you came home, you could dump this heat into your home water storage system. Not as fancy technically as PV but workable…. Until you look at weight being carried around. Still… always great to pull problems apart and see where you end up.

Love your explanations, really helps me understand. Thanks fun video.

That finish was great. Trying to efficiently use the remaining energy. Creating symbiotic engines.

@nacoran

22 күн бұрын

I woke up in the middle of the night once with an idea for using waste heat. I googled, and unfortunately, someone had beat me to it (at least in a lab setting, I found a paper on it). Basically you use piezoelectric fins as a radiator, turning the movement of heat from the heat source to the ambient air to generate electricity. Basically it's the same technology that we use to turn thermostats on and off scaled up. Probably would add a lot of weight, so might not be worth it for cars and such, but another way to deal with converting waste heat to electricity.

@jackfrost2978

22 күн бұрын

@@nacoran We often make things overly complex. This video is a good example of trying to keep it simple. i agree that it is very easy to overcomplicate something to the point of any potential benefits being nullified. It seems to me that we are not used to thinking of building simple, efficient, synergetic systems. In reality. Most of our systems are synergetic. In many cases we only go as far as we need to go to get a system to work. Then we get used to working within that system instead of looking at ways to make large scale changes. This seems to be partly the problem of industry.

@EconAtheist

3 күн бұрын

Formula 1 cars have energy recovery systems (ERS) and been doing this sort of thing for at least a handful of years now. Imperfectly of course but they're still pretty amazing relative to 'no ERS'.

Combining this with a modern Sterling engine of some kind (like Karno), to make electric power directly from the waste heat would really squeeze the extra efficiency out of it.

@leerman22

22 күн бұрын

It looks like a recouperator to preheat the intake air would be better, if this works that is. Thought you can only get the sodium yellow through electric discharge not just by heating it up.

@RaptorNX01

17 күн бұрын

the problem i've seen across videos dealing with both sterling engines, and also peltier related devices is that there seem to be a loss of efficiency over time. its hard to prevent the temperature from equalizing. and since both really require a large temperature difference on both sides of the device it ends up getting less and less efficient the longer it runs.

I love learning about different technologies! Thanks for sharing this and making it easy to digest. Keep shining ☀️

@TwoBitDaVinci

13 күн бұрын

Thank you! Will do!

This is real. The principle is well established. But you’re overstating what they claim for efficiency. They don’t claim to be that efficient. @danielle_fong, the founder, made a comment here, but it’s not showing up for some reason.

@jjptech

15 күн бұрын

If the comment was made and deleted… I will immediately unsubscribe and flag this channel. I hope we can find out

@TheAnachronist

15 күн бұрын

@@jjptech I suspect it was an algorithm mistake, not intentional

I like this format - Both describe new concepts created by others, AND extrapolate on the concept and provide a technical rationale for why the extrapolation may be plausible.

catalytic converters already get 1000 centigrade hot, so a large one built with quarts encapsulated sodium low pressure lamps & tuned band-cap matched photovoltaics could convert exhaust heat energy into HEV traction battery charging while the engine is on, radically improving overall system efficiency or radically lowering fuel consumption

@sammy5576

22 күн бұрын

really good idea. the trouble is... all the light from the inside is lost, and you can only collect light from the edge, you need to heat the sodium without losing it,

@cyberGEK

22 күн бұрын

ENGLISH PRO TIP: Quartz is a crystalline mineral.💎 Quarts are how you buy Milk, 🐮 or in Australia, beer 🍺 😃

@sammy5576

22 күн бұрын

@@cyberGEK what dose English have to do with quatz?

@zaakoc

22 күн бұрын

That's still to cool to cause sodium to incandescence .

@theairstig9164

21 күн бұрын

Cooling an exhaust stream below 100C means liquid water will come out the end not water vapour. I’m not going to explain how much of a problem that is

fun tangent fact: "this orange light is the superior green + blue screen CGI replacement that Disney used back in the old times where CGIs weren't a thing.

@VPWedding

22 күн бұрын

That’s right. That specific frequency of yellow is so narrow that you can filter it out without changing any of the other colors in the shot. So one strip of film would see the yellow as white, while another would see it as black. And that is how the great mattes for Marry Poppins worked.

@RaptorNX01

17 күн бұрын

i think thats why i got recommended this video. i had just watched steven mould's black flame video, and had previously watched corridor crew's video on it.

You have awesome content. Thanks for producing it.

Very understandable technical explanation (I'm a chemist): concise, and hitting a number of related topics to enable me as a viewer/listener to form an opinion! Thank you!

I was not too impressed with the "Light Cell" until the end of the video when you brilliantly combined it with a normal piston based internal combustion engine. The problem might be in getting a high enough temperature from the exhaust to, more or less, fluoresce the sodium. Anyone interested in working on the idea might want to try an old school automotive mechanics tool called a "vortex tube" to provide an incredibly high temperature air flow to heat the sodium.

@CUBETechie

22 күн бұрын

Can't the vortextube be used directly After the Gas turbine exhaust?

@mikeyned690

22 күн бұрын

@@CUBETechie Anyplace you want to separate hot and cool air that is pressurized a vortex tube is the simple way to go but the tube in this application may need to be made with ceramics because of much higher temps than standard mechanics compressed shop air. mIKEY

@CHIEF_420

22 күн бұрын

@ExxonMobil ⛽️🧂

@MrMonkeybat

22 күн бұрын

Electric hybrid cars need small efficient generators as range extenders so they can have small batteries for day to day driving without range anxiety. Attaching it to a big clunky piston engine would defeat the point. Your typical car engine sends about a third of its energy out the radiator a third out the exhaust pipe and a third to the wheels. If the predictions are right tis will be more effiecient by itself.

@slom2529

22 күн бұрын

Or you know we could scrap the car idea and go for trains, which if we’re talking electric trains, can be at least 100 times efficient as car travel per person.

they would need to keep the solar cells cool too. The temprature of a solar cell greatly effects its efficiancy and at that power density they would definitely need an active cooling solution.

@TwoBitDaVinci

22 күн бұрын

great point

@benbriedis

22 күн бұрын

Maybe flow the input fuel and/or air along the back of the cells?

@javakhtar5339

18 күн бұрын

@@TwoBitDaVinci a Solution to cooling would be to use a clear liquid with the same refractive index of the glass and use a regular radiator and fan setup. Maybe putting it between the PV cell and the lamp with a small vacuum between the lamp and the liquid (in another tube) so as not to cool the lamp

@adr2t

13 күн бұрын

Well in theory, because it would be able to use most of the light coming and there is less over all IR light - they would stay cooler than your sun driven panels would.

With the high quality of these videos and the very good subject matter, it's bound to become a famous KZread channel. And, I'll remember when I subscribed when it was small.

You can install this engine in a rear-engine design and completely eliminate the problem of other people tailgating you.

Thank you for providing enough details to know that this is likely a pipe dream. Seems like too much energy would be lost between them different energy exchanges. I’ll wait for the more dense batteries

Heat is accelerating the aging proccess of pv-panels. Ageing is lowering the efficiency through lifetime exponentialy and the heat lowers the lifetime.

@nacoran

22 күн бұрын

I'd think the more efficient you got the conversion the less that would be an issue... you are converting the heat to light, then converting the light to electricity. The more efficiently you do that the less waste heat you have, and on a moving vehicle you could add some air cooling. I think you're right though. Managing that heat is going to be critical. I really didn't get an idea of the scale on this... I know that, with the exception of some low speed concept vehicles you can't power a car with solar panels for continuous travel (day/night issues aside). This is 4x as efficient as regular solar cells... but you'd still need pretty significant surface area for the cells, although obviously you can fold them in ways you can't fold a panel you want to catch the sun.

@mitchellcouchman1444

22 күн бұрын

@@nacoran Sodium will not convert all its energy to light, that's a pipe dream, it will get hot

This is totally amazing. Thank you, this gives me hope.

Great Video 👏👏👏 I liked the true self generating hybrid idea mentioned towards the end.

pn junctions are inherently thin so that most of the light passes through without exciting electron-hole pairs. The bottom material is mostly reflective so that the light passes back through and generates more electricity. The reflection coefficient is 90% or so. If the reflected light excites more sodium, then a little less than half is emitted toward the photocell again. The rest is absorbed by the heat exchanger surface and converted back to heat. This (sufficiently) hot surface does excite sodium, but it also emits significant blackbody radiation to be radiated away and to heat up the photocells and reduce their efficiency.

@mitchellcouchman1444

22 күн бұрын

Plus all the exhaust heat loss and compressor losses (is not mentioned but is required as this is functionally a jet engine)

@simontillson482

20 күн бұрын

Very true. You could channel the incoming air stream through heat exchanger fins on the back of the PV cells to keep them cooler though, and it would also act as a preheater for the air. Also, these newer PV absorber semiconductors have amazing absorption coefficients - unlike silicon which needs 150 micrometers to absorb most of the light, germanium carbide only needs to be 15 micrometers thick. They will get really hot though, even with cooling, so like others, I really doubt these efficiency figures.

If this is actually as advertised, a 1 gal size lawn mower should be available for christmas.

@TwoBitDaVinci

22 күн бұрын

lol yeah... somehow I doubt it but its just great to see that research and engineering is being done on all sorts of possibilities

@CorkyMcButterpants

21 күн бұрын

@@TwoBitDaVinci_"research and engineering"_ hahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahaha

Yup dude your explanation was great, thumbs up!

Love this Ricky!!! Thanks again for your straight up analysis.

@TwoBitDaVinci

22 күн бұрын

thanks Mike! I really appreciate it!

perhaps i'm missing something, but i don't see a recent innovation here, they are lighting a candle next to a solar panel?

@nuclearmedicineman6270

22 күн бұрын

Yea, but.. it's a really bright candle. Surely nobody's ever thought of that.

@Petriiik

22 күн бұрын

it is the small bandgap PVs, which with use of monochromatic lightsource achieve high efficiency.

@WolfeSaber9933

22 күн бұрын

With the panel designed to work with the light coming from the burning fuel.

@rebokfleetfoot

22 күн бұрын

@@WolfeSaber9933 ya, perhaps the way they are optimizing the waveform is an advancement

@nacoran

22 күн бұрын

Yes, but they are tuning both the light and the solar panel to work better with each other.

I'm not smart enough to even begin to understand the little details, but the optimist inside me is always looking for "the next evolution".... Great video.

@TwoBitDaVinci

22 күн бұрын

I have that same thing... when i hear something i'd love to try to build myself, i know it'll be fun to deep dive into :) cheers!!!

Interesting; thanks for bringing this to our attention.

Subscribed for being excited for the possibilities, but being skeptical and knowing what you're talking about.

Also, don't forget only light that falls directly on the band gap if the PV cell can be captured. And any heat whose black body spectrum falls below the 590 nanometers could not be used either, thermodynamic and all...

Now I understood the context of bandgap and photoelectric energy. What if we made photovoltaic cells (for roofs, not light cells) with multiple layers of photoelectric materials, each having its own bandgap? The layers would be thin so unused light can be captured by the layer below with the corresponding bandgap. The layers would be laid on a mirrored surface, so light reaching the mirror is reflected again towards the different layers and hence increase efficiency.

@TwoBitDaVinci

22 күн бұрын

yeah, that would be a multi junction cell! Currently the challenge is to allow unabsorbed light to pass through higher layers to lower ones... but yes multi junction cells will eventualy be a thing, and can increase efficiency of solar to north of 40% 2x what we have now!

@larsjrgensen5975

22 күн бұрын

For size constraints this could be a good idea, but every layer is adding cost, for example 5 layers stacked with 5 different bandgaps, could cost the same as 5 normal panels we use today. The multi layer solar cell record is 47-48% efficiency, so only around twice as good as a normal solar cell, but maybe 5 times as expensive to produce depending on how many layers used. The normal cells we use today would still be much more efficient $/watt power then multi layer solar panels.

@zaakoc

22 күн бұрын

@@TwoBitDaVinci Watched this Idea being implemented over the years. Multi layer cells are the future of solar cells. Love your channel!

@zaakoc

22 күн бұрын

@@larsjrgensen5975 As it's adopted the cost of multi layer cells will drop.

@larsjrgensen5975

21 күн бұрын

@@zaakoc Multi layered cells are multiple cells stacked on top of each other. Any fabrication breakthrough of the cells would apply to normal 1 layer cells too. The price difference between 1 layer and multi layer should stay roughly the same no matter how many breakthroughs.

Unless I missed it, the biggest obstacle to any new combustion process is the type of combustion emissions, where is this considered?

Love that you brought this to us the viewers. Great brain food with this concept. Could we use the extra heat to add steam to the mix?

It's another pipe dream that we'll never hear about again.

It takes a long, long time to make a reputation, and apparently 15:13 to break it.

That is amazing! What about using the exhaust as a means of direct propulsion/car-levitation as well? That would reduce the frictional forces between the tires and road, and further increase the engine's efficiency.

Wow your idea at the end is good. I'm all for anything that lets me keep my ICE.

Thanks for covering this Ricky. As micro-turbine gas-electric generators already are capable of about 70% efficiency, are very compact and simple, why not use them instead combustion photovoltaics? In regards to your concept of photovoltaic ICE exhaust power recovery, I'm thinking that if you were able to recover 50% of the waste energy from an ICE exhaust using photovoltaic generator, you would be recovering about 15% of the total engine thermal losses. Having worked with large Exhaust heat exchangers (stack robbers) to capture waste exhaust heat, but due exhaust restriction and back-pressure reducing engine power, we typically only recovered about 30% of exhaust heat. If similar was the case with photovoltaic recovery, you would only be recovering about 15% of the waste energy in the exhaust stream, and something like a exhaust power recovery microturbine, adapted from a turbo-charger to drive an electric generator might be as efficient and less expensive. BTW: Back in the 80's when I was working for in the Oil and Gas Industry and dealing with HPS and Mulit-Vapor lighting systems, the thought of using high temperature combustion gas to produce combustion based lighting using a multi-vapor tubes for remote off-grid locations occurred to me. I mentioned it to some engineering colleagues, and we estimated the efficiency could be considerably higher than electrically excited tubes but the maintenance, cost and complexities of producing such a system would likely be practical and affordable, plus having combustion sources in flammable environments is not suitable.

@TwoBitDaVinci

22 күн бұрын

great insights Jack, that's interesting especially with your background... cheers!

but about which temperatures are we talking about? what is the efficiency of the thermo-photo conversion at different tenperatures?

@orionbetelgeuse1937

22 күн бұрын

most of the energy will be radiated as infrared.

@Petriiik

22 күн бұрын

I read through an wiki article about TPV. Now I think this is just a scam for investors.

@teardowndan5364

22 күн бұрын

@@orionbetelgeuse1937Radiated where? A real implementation of this thing would have the sodium inside an insulated mirror and we do know how to make mirrors for specific wavelengths, practically no IR would get out. Exhaust gasses would also go through a heat exchanger with incoming combustion air to achieve 95+% heating efficiency like a condensing furnace. Intake air can also be routed around the device to pick up any heat that got through insulation. Efficiently heating sodium to incandescence and keeping it there is effectively a 20+ years old solved problem. Seems to me like it is all about how cost-effective, efficient and durable the sodium-PV part of the process actually is.

@orionbetelgeuse1937

21 күн бұрын

@@teardowndan5364 a heated thing radiates energy at various wavelenghts from infrared to visible light. For instance a lightbulb has the filament made from tungsten but the radiation produced is not monochromatic just on the spectral lines of the tungsten. the same will happen with the glass tube and the sodium. It will produce some yellow light but also a lot of infrared. All the energy radiated at wavelenghts bigger than the yellow light for which the panel is tuned is lost because it cannot be captured and the light with shorter wavelengths will be captured but with losses heating the panel.

I like how for this episode you went more to the drawingboard giving your own ideas to the mix

Even with lower efficiency this is still a practical technology, the no moving parts and light weight is a big plus. Thanks for the Mesodyne link

70-80% efficiency... I will only believe it when I see it. Efficiency that high has me doubting its efficacy hard

Practically speaking, fuel type will be of critical importance. Pre-circulation of fuel (as in rockets), can get you pretty low heat loss at the cost of only being able to print it, if that. And without pre-circulation - as maybe with solid fuels - you will lose efficiency. Also, how the fuel burns will make a difference. Any build-ups on those complex interior heat-exchange surfaces will degrade efficiency, and possibly force unforeseen wear on the exhaust system. Also, super-efficiently tuned-bandgap gallium or germanium or silicon or whatever seems a bit of a hand-wave. Let's actually see it. Lots of devilish details lurking.

This is what I've been waiting for for sixty years when I theorised the exact same principle but most of my colleagues said "yeah only in the superman comics you keep reading mate" well guess what ..,superman just came along, I would like to meet this young man. He's a genius . He will succeed where I failed. This is the propulsion of space craft for starters. I hope I can get to support him.

Good research!

The problem, assuming the claims are valid, is that automotive engines have highly variable power needs. This system seems likely to be tuned to a very specific power output level to achieve its very high efficiency. That is the opposite of what a car needs. At best, in a car, is you use this as a means of recharging a depleted battery array. At that point, this power system is in competition with fixed point public utilities. So instead of comparing its efficiency to a cars IC engine, you should be comparing it to the efficiency of grid scale coal, natural gas or nuclear power plants.

@nathanbanks2354

22 күн бұрын

A range extender for an electric car, plane or boat is still quite useful.

@MrMonkeybat

22 күн бұрын

Most EVs only use a fraction of their range each day there batteries are oversized for range anxiety and those odd trips. A small compact efficient lightweight generator like this would be great range extender for those odd trips so the battery can be much smaller lightweight increasing maneuverability, efficiency and reducing the cost of the electric vehicle without lugging round a heavy complex piston generator like current hybrids do. As the generator in such a plug in hybrid is just used to recharge the battery it does not need to be capable of variable loads at all.

@mitchellcouchman1444

22 күн бұрын

Problem is you're assuming the claims are valid, they aren't

The passion and effort you put into your videos is very admirable!

@TwoBitDaVinci

22 күн бұрын

I appreciate that!

Use that exhaust baffle as a "reverse Peltier" thermal electric generator and have TEG's on the backside of the PV cells to help keep those cool while also generating more electricity.

I'm actually going to start thinking of a way to incorporate a sodium fuel cell type tube like y'all made into my cars existing intercooler and cooling system. Then you could get rid of your alternator and possibly radiator or intercooler if it's efficient enough. That's an awesome idea and great food for thought!

I realy enjoyed the new style... finaly you start to dig into those projects and not only read the advertisements they make... this explanation was perfect...

@TwoBitDaVinci

22 күн бұрын

so glad to hear it!!!! trust me its a process, one i work on constantly, and your feedback means a lot. thank you!

Weichai in China is building Diesel truck engines with over 53% thermal efficiency (World record)

@JohnDir-xw3hf

22 күн бұрын

I don't trust China. They lie too much.

@H0mework

22 күн бұрын

Very interesting!

@jimj2683

22 күн бұрын

I heard that too, but I will not believe it before I seen external independent tests. If it is true it will come to all boats and trucks near you soon.

@leerman22

22 күн бұрын

It also asexually reproduces I bet.

@nathanbanks2354

22 күн бұрын

This isn't far-fetched, since truck-sized Diesel engines are already 40% efficient. You could add a steam engine to convert a little waste heat back into more energy or squirt water into the cylinders. I haven't looked at what they're doing.

I think the key to making this work is transparent solar cells. Seems that with germanium you can stack multiple layers on top of each other, that could greatly increase the efficiency in a cilinder, and maybe cap it off with a mirror too.

I do love the thought of merging it into a traditional combustion engine. Even if the efficiency gains are too small to contribute to forward motion, it may at least be able to replace or at least supplement the alternator, freeing up some load on the engine and being able to reap the benefits of that extra efficiency with minimal effort, possibly easily enough to be swapped into existing ICE powered cars. It would also mean, depending on how much heat is absorbed, that your cooling system doesn't have to work quite as hard when the battery is being charged from this system.

whole chain sounds extremeley stupid to be efficienty more than 0.3%

Hi there, thanks for this video. I like the out of left field approach of this tech. What is the heat range (in centigrade) required to create the narrow bandwidth light?

this concept is amazing and shows what engineering is all about. take a hard problem and convert it to an easier, more solvable problem. it would be really interesting if you could do this with concentrated solar. have concentrated mirrors that burn a material to create a light at a wave length that you can capture more of with a cheaper material than pvs. thus, you up the efficiency and lower the costs.

Could also be geothermal - all you need is a high temperature for sodium. Bury the sodium PV cells in the mantle, instead of steam generators. But current ones slso need cooling and thermal management. No pv cell can just perfectly function at high temp long term.

@zaakoc

22 күн бұрын

Love the idea. The mantal doesn't get nearly hot enough. Maybe another compound that will glow at a lower temp.

@RaptorNX01

17 күн бұрын

the point of using sodium is it emits light at only one wavelength. so having a special solar cell that is fine tuned to that specific wavelength increases efficiency. using another compound ruins that.

Fascinating approach and with the right material and engineering it looks doable. The problems are always in the details and the engineering tolerances and efficiencies.

@TwoBitDaVinci

22 күн бұрын

perfectly said and I couldn't agree more!

that idea you pitched at the end was awesome. I think you should hire a team to make it happen.

Ricky! Dude this really fascinates me as someone who has researched Paul Pantone's geet reactor system. I find your idea of adapting the photovoltaic heat engine as a heat recovery concept for a regular combustion engine pretty curious. What would you use the electricity it makes to power? Electric motors? Make Hydrogen to send back into the engine?

There's no way in hell they will work with any efficiency. Lighting a candle and then trying to gather a miniscule amount of light energy with a solar panel is the stupidest way to do it.

@BillMitchell-lm8dg

22 күн бұрын

The effieciency lies in matching the band gap of the photovoltaic cell to the narrow yellow emission band (spectral line) of the hot sodium. That is where Danielle Fong, et al., thought outside the box.

@Georgewilliamherbert

22 күн бұрын

Forget the candles. How much power is going through a car engine, jet aircraft engine, or large rocket engine like SpaceX Raptor? Raptor is around 8 gigawatts. If the energy conversion efficiency is the same 80% quoted earlier then that’s 6.4 gigawatts of electricity. California is using 19 gigawatts right as I type this, so about 3 Raptors worth of propellant burn is needed (about 310 pounds methane per second per Raptor, so around 900-1,000 pounds per second for all of California).

Highest photovoltaic efficiency is 45% for multijunction cells. Getting 90% is just wrong.

@ipp_tutor

22 күн бұрын

That’s because you have multiple layers for different wave lengths each interacting with one another, the top layers shielding the bottom layers, different conductivities, multiple junctions etc. It’s very hard to get the best efficiency at every color or light the sun emits and you always end up losing a lot of it. But here you have a single monochromatic source with a fine-tuned single high-efficiency cell. I’d say it’s perfectly possilbe

@RurikLoderr

22 күн бұрын

​@@ipp_tutor Not just possible, entirely expected.

@geekswithfeet9137

22 күн бұрын

Yeah quantum efficiency (not a buzz word, actual term) at peak wavelength of photo voltaic cells are already over 90%…. With the caveat of that’s photons inside the semiconductor, there’s still the hurdle of getting them in due to huge refractive index differences, but not physically impossible

@user-ft3ed5wv7w

22 күн бұрын

more common is 22%

@geemy9675

22 күн бұрын

​@@user-ft3ed5wv7w22% with solar because wavelength doesn't match the photo voltaic cells

It very probably is some sort of special fiber optics that consist not only of silicon in a very durable PES substrate but a metal element. I remember reading that it takes a matching frequency of light to harmonize with and propel electrons. Perhaps this can be used in car cylinder piston chambers to capture lost energy.. Since quantum dots arranged as knotted fibers can trap more energy maybe such are used for enhanced effect!

Great video, thank you.

1:40 This falls apart with the knowledge that photovoltaic cells works SIGNIFICANTLY better when cold, not hot (thermo).

This is the first time I’ve heard that moving parts were the problem with combustion engines.

@tylerhensley2312

22 күн бұрын

Technically the moving parts are the downfall to any internal combustion engine, first they are parts that have to be made and to really tight tolerance, second they wear out and fail if not maintained correctly and third each and every moving part takes energy to make it make it move so the moving parts in an engine are technically the number 1 thing hurting combustion engines, however, what's in this video is a bunch of hog wash and won't work efficiently like they say it will.

@rorschach775

22 күн бұрын

Is this the first time you've heard of a combustion engine? Moving parts are always harder to maintain.

@orionbetelgeuse1937

22 күн бұрын

@@rorschach775 yes but if they are very cheap it does not matter too much

@kistuszek

22 күн бұрын

@@orionbetelgeuse1937 That is true, but note: If you make cheap parts you shorten the maintenance cycle and if you been to a repair shop recently, you might not like to 10* that cost even if the parts were free. So as a species we kind of grown out of cheap parts half a century ago, by virtue of maintenance costs and by pollution standards. Which means car engines are too expensive to be ideal. Which is kind of why tesla can compete on price with them even though their supply chain is still in its growing pains phase. Now this kind of thing would make for a cheap range extender, that could allow electric cars to from BEV to hybrid with virtually no complexity gain and be actually cheaper than before. (since you dont need nearly as big a battery if you have a range extender)

@poporbit2432

22 күн бұрын

If it moves, it wears out. That's why solid state has advanced so much faster in the past 70 years.

Whatever removes so many moving parts is the true objective. I like the idea of cpu cooler design to get the needed light cleanly. Keep pushing to get this idea made. If it works ...it works... whatever gets us using petrol more efficiently is never wrong.

Dude came at this like i do with all new tech, asking is this real or more smoke and mirrors. Great video!

It is still burning stuff. There I was thinking we were in the middle of a climate crisis and burning stuff was chiefly to blame. The oil companies must love this sort of tech, spin it out enough and they might buy themselves another 5-10 years of profits!

@bryanst.martin7134

22 күн бұрын

Climate crisis is a hoax. The Sun modulates the weather. A factor left out of the IPCC models.

@teardowndan5364

22 күн бұрын

Oil companies aren't going to like this since it would mean you need to burn ~30% less fuel to get the same job done. Also, burning stuff works almost equally well with all fuels, which means a convenient, reliable and efficient way to convert heat from any source into electricity would blow the doors wide open on alternative fuels. Right now, alternative fuels are limited to what is compatible with existing engines since achieving efficient combustion requires very precise fuel-specific tweaking, much of which mechanically baked into the engine. BTW, if this stuff actually works as advertised, it could replace turbines in all thermal power plants where the primary coolant loop can run hot enough to make sodium incandescent. Getting 30-50% more output from nuclear plants, molten salt solar furnaces and fusion reactors if those ever become real wouldn't hurt.

@WolfeSaber9933

22 күн бұрын

Burning things more efficiently is the game, like diesel being the cleanest fuel for a truck, while also giving enough power for you to pull anything. After all, there are projects to create biofuels to replace the stuff coming out of the ground.

@CHIEF_420

22 күн бұрын

​@@WolfeSaber9933⛽️🧂

@Okamika44

22 күн бұрын

If we can burn bio fuel, you are releasing the same amount of carbon you take out of the air by growing the fuel. = carbon neutral. fossil fuel is the problem not combustion.

I thought we had to stop burning fuel…. ??

@yourcrazybear

22 күн бұрын

"I thought we had to stop burning fuel…. ??" As long as we have fuel we can burn it.

@wattsmith2656

17 күн бұрын

It’s a little more complicated than that. In the meantime burning less fuel is better than doing nothing.

Based upon your description, you should be able to simulate this system even on a small scale using a candle. One problem i see is that so much energy will go out the exhaust (not just heat but light too). So i can't see how they can get the numbers they're predicting. We'll just have to see a prototype.

Im pretty sure thermo-photo-voltaic means its a combination of thermal and photo cells stacked/layered to to capture both the photo-voltaic effect and thermo-voltaic effect so that the energy efficiency of both can be stacked

Bro amazing video! I have so many questions for you is there a way i can pick your brain more about this ?

I'm very sceptical that they will achieve that efficiency in practice. But it certainly sounds like a clever approach.

I suggest that you can try to interview them and let them lead you into their lab if possible, like you did so in other company as well. I knew this company but I didn't dive into their tech so deeply. After all, seeing is believing in person and its lab. Your question is also my question. I am glad you made this video. Thank you. BTW, there's PEM electrolyser. There's also a new one called AEM electrolyser.

Well done 👍🏼

As a long time owner of a Hyundai Sonata hybrid (before they got cheap) I've been trying a hundred ways to increase range and efficiency. Capturing the heat from engine exhaust just makes sense. Build an adapter that can transfer the heat from engine exhaust and stand up to the environment of a car engine or exhaust system and a way to store the extra energy then you got my vote. Need a car to test it on?

Good video. I'm not sure about all the heat... 🤔 It would be nice to see this working.

One of the best presentations you've done. It should work fine but the conversion rate is obviously key to it being successful - guess we'll see.

Brilliant video, excellent technology... I would have gone with day after day but the day and not night thing was definitely funnier 😁

I've got a Henson shaver, and it lives up to all the hype.

Crazy idea. And I love your new dynamic style of storytelling. Not just a sitting talking head :)

Fuel cells work through combustion as well. It's just that the combustion reaction is facilitated by an electron exchange across a dielectric membrane. Recapture of waste heat from fuel cells using Sebeck units improves efficiency. Using thermo-optical conversion through a narrow band material would allow more of the heat to be recaptured using the photoelectric effect. I have a hard time believing the 80% efficiency number, but it is a good idea.

Usually things like this never see the light of day they're always bought out and archived