PARABOLIC MIRROR 55.7" PARABOLOID SOLAR POWER STEAM GENERATION Giant Death Ray

[PeekyBooo]

never cook in aluminium containers. It's poisonous.

[mailgdv]

Shoot it!

[narcovice]

can an 18 inch parabolic dish cook things as well hawaii has lots of sun hear cetering it to the sun casts a shadow beneath the dish

[YouTheory]

I think you should focus the light on blimp and take it down :P

[YouTheory]

Whats up with the Spy blimp in many of your videos? Seriously why is the government scared?

[gabrieltgh]

where can I buy one of this mirrors??

[hdbagger4266]

Nice video but whats the final point will it heat my home and make electricity? and where would i get them? Home depot doesnt sell them ...where the hell did you find them?Hope the neiborhood kids dont have slingshots or red ryders or you will be picking up a lot of broken glass...but anyway its interesting

[Halberds]

Cool demo. Thanks.

[nonstopjames]

if you point that at solar panals would it make them work better?

[baneb]

make a solar array and point them at the blimp

[kazanovaahmed]

Great if you're in California, not so great if you're in England.

[UltraXryder]

Deff the first YouTube vid I've ever seen that was interrupted by the Goodyear blimp lol, nice work if we could only make this method much much smaller and we could use this for an every day method for cooking

[Magnumscoffeefreek]

water boils at 3:21

[Tagz3339]

as always Dan very good video very informative I have some ideas of my own that I will be building a web page for and hope to be able to show you some of my stuff and see what you think. Till later keep up the good work and will hope to see you soon a fello eventor.

[narcovice]

sholdent the sn spot be in the iddle of the center i see it on the side

[HappyJackProduction1]

Ive been watching your vids..pretty cool but i have a question. All i see is water being boiled, whats the practical purpose of a parabolic mirror? Surely people aren't spending a thousand bucks to boil bottles of water in amazement lol

[okaldp]

Very interesting

Have you tried plasing a concentrating lens in the g spot infront of the mirror?

I wander what comes out from the lens

[bvnbmklopvcxzas]

marriage and get a trusted women Online *lushfmlk.info*

[chakooch1]

Clumsy video.

Green energy shouldn't be that generic in video producing. :)

[traderrmr]

Is GoodYear a sponsor? You guys live in a noisy neighborhood :). Thanks for the videos

[tarrasque420]

Goodyear blimp ha-ha should have used your laser on it. I have no idea what you’re trying to make but did you try to use highly reflective chrome spay paint that you can find at Wal-Mart?

[FalconBlancoSpain]

There is no information given in this video. Boring...

[ricochetVendetta]

SHould have focused the mirror on the blimp and blown it up lol

[1foxtrot70]

Hey Dan - In reference to the Goodyear Blimp going by, I see a possible product of some sort of noise cancelling circuit for microphones like those for headphones.

[johnnycadilac1]

you got good idees men, but you gatta make your devices more "complete" like some practical finished product....i dont see myself standing there to get water boilling....could say the same with your Tesla turbine....send me links if im wrong...

[nerdylicious360]

you should like make an infomercial and grill roticery chicken :).

[nerdylicious360]

write george foreman for a solar powered foreman grill :D all natural.

[thegools]

That is insanely expensive. I like the idea but I will stick with my charcoal grill.

How did make this? Can one make this at home?

[archileach]

Do you know if these guys made their dish or if they purchased it? If they purchased it, I would appreciate knowing where they got it and how much.

Thanks.

[dzihouchan]

@archileach They actually have some on their website, I think they make them theirselves but I'm not sure. The cost varies alot depending on the size, ranging from around $100 to $300. These aren't cheap =(

[joe18370]

hey dan thats the government trying to spy on you,in that blimp,yea i get the helicopters circling my house,they tryed the blimp but it was a windy day in florida, nice video

[mandoman1123]

my macbook can totally do that in a fraction of that time!!

[neuralecho]

You should have shot the blimp down with your solar death ray (just kidding ;)

[sabaqat]

maybe buy better microphone mr. & mrs. rojas...

[F2L4Life]

Now all we need are giant ants.

[sabaqat]

very funny... but not good to fry ants with sunlight... poor little creatures--i fried a few in my childhood, and am worried about karmic imbalance until today

[mail4male]

lets get a bigger paraboloid & shoot down that balloon next time it passes by

[DanFrederiksen]

when you were frustrated with the blimp you walked past it and waved your hand dangerously close to the focal point.

how is the mirror made?

[gotrum]

Goodyear blimp ftw!

[AutoteckO8]

Dan...wear uv shades or welders eye protection. We can't afford to lose you if you go blind. There's something I want to ask and that is...Do you work in R&D on the base? I think so because only R&D folks have knowledge base to construct and implement devices like yours.

[huckbeduck]

@AutoteckO8 I agree an arc welding helmet would be better, you can still see fine through them if you are in direct sunlight

[Crusoe92]

hot coffee :D yumm....~

[hawkknite]

Nice: ever think of a molten salt container for the focal point = Steam Power -----> Generator.

Thanks for all your hard work

[SpeedMetal4635]

the water boils too fast

[aerozeplyn]

oh no! what an inconvenience... lol :)

[Th2EyA0rEa1MoN2gUs]

too fast are you ok

[SpeedRokr]

Im using my 2nd acount to delete the negative points hehe ;)

[tunicanl]

you should of pointed the mirror at the blimp

[SackyX]

Hey idiot you knocked the dish over, lol Jk nice video. Btw you should have Qued the blimp instead.

[jptc123]

and the reason third world countries cant have boiled clean water is??????????????

??

[Elvarks]

People are ignorant, I think

[btrueeth]

Not ignorant sir. We know about these things but we just don't care about hot water and these things are hard to find.

[dudeskinn]

You know what, that is pretty impressive, solar power is the future, hot countries will thrive.

[sickbuffalo]

Hi Dan. Regarding fresnel lenses and parabolic dishes- is there a positive correlation between temperature and distance for all points between the focal distance and the lens/dish ?

[GREENPOWERSCIENCE]

Yes but the energy is the same. Closer yields a large focusing spot with a lower maximum temperature, larger area.

For water it is best to not be at optimal and illuminate the entire side of the container. The larger area looses less heat and transfers faster. Super high temperatures leach a lot into the atmosphere reducing efficiency. Since I was just holding this it was in and out.

[connberkshire]

Dan,

Was this a preliminary test to find the dish's focal point? And do you intend to build a bracket to that point? Keep the good ideas coming- you're giving all of us out here a lot of things to think about... Thanks!

[LarryMReed]

Dan,

glad to see your getting so big time that now you have the Goodyear Blimp recording your demonstration. Why didn't you broadcast their footage of the event?

[cliffhanger57]

How does one take a dish and allow it to follow the sun automatically. Is their a device that would allow this on the market thanks Mark

[connberkshire]

If you take an old-style (C-band) satellite dish mount and change the elevation and inclination to follow the track of the sun, you can use this method, although it works best with a polar type dish mount. You wouldn't believe the number of these dish mounts I scrapped back in the 90's when I was a satellite installer, when people went from C-band (10' dishes) to DirecTV... Now I wish I'd held on to a few... If you'd like a rough diagram of how one of these mounts is put together, email me...

[dimitriosart]

Haha Dan, had to laugh so hard with the bloopers. Thanks for the vids, great stuff!

[blongood]

So what is the practical application of the parabolic mirror? It's a great parlor trick to light a stick but is there anything of a more useful nature that can be done? Thanks for your answer.

[bg0821]

yes you can cook with it. just place a dark colored pot or pan in the focal point on a rack or something, and you can boil water or cook food it works.

[sjh7132]

17 Oz = 502CC or about 502 grams

Specific heat of water = 4.186 j/g/degree C

50F = 10C boiling = 100C

90 C temp change

total energy = 90 * 502 * 4.186 = 189Kj

Power = energy / time = 189Kj / 90 = 2.1KW.

I've always heard the sun was about 1KW / m^2, and this pretty much agrees.

Cool experiment. I like measurements.

[CeeJayDK]

I'm guessing you'll be showing how to ignite annoying Goodyear blimps using parabolic mirrors in an upcoming video ;-)

[1035573]

that' s a good energy source for impoverished countries. why dont you send some of those dishes to Uganda for example. they' ll be thanking you for that.

[3of8jober]

Hey, Dan the back yard science man.

How is the solar sterling project going?

Have you got any data on how many of those dishes you will need to generate 8kW even 1kW of usable electric power ?

I am building a few low pressure steam engines. If you want I could send you one to play with.

[ObiWanShinobi1]

Dan, how about a practical, complete demo on a 4 or 5 KW steam (or thermal) generator with focused & reflected sunlight I've been interested in doing one, but I've been wondering about the space needed to produce some real power.

[3of8jober]

I would 2nd that.

[listsgidinet]

me too. Where can we get a decent steam engine, we only need 5~15hp on a shaft.

all pointers appreciated

[gravguyyahoo]

have you tried to boil water with the parabolic mirror to drive a steam generator ( turbine). the idea of running water in and out using the copper tubing looks like you might be able to generate enough. i also saw your suggestion of running a sterling engine but seems like a waste of energy

[bellaggio1770]

Why would using a Stirling motor versus a steam turbine be a waste of energy?

[mlc520120]

That was Bush flying over. checking out your oil killing gadgets!!

[GREENPOWERSCIENCE]

:-)

[daddydeathsmack]

This is where the issue of 'emissivity' becomes paramount. Painting the surface black obviously helps, a 'selective surface' would help more, but making a simple cavity receiver would be the best because all reflected radiation (most of it anyway) would be absorbed rather than emitted to space.

[slam1na]

Have you thought of creating a magnifying glass effect to a reflectivfe surface of a smaller scale? I can't help but think of all the poor ants trashed by kids and think maybe they were onto something.

[EvilMongrelMonkey]

Is that Delta Burke or Oprah flying over your house???

[svesolar]

if you want a cost effective tracker for these mirrors send me a message.

[eddiequest2]

The only "cost effective tracker " is DIY... dude. :P

[svesolar]

that is what I am offering, free plans

[hansgepunkt]

oh, i'm looking for a low-cost-tracking-device.

[RaspWillow]

yeah, free plans? hook us up with a link dude!

[GeoffdeRuiter]

Dan I really think you should make something big, not in size but in impact. You have so many cool experiments, but make a 1kw solar thermal generator for your home man! do a series on it! Make it practical!

[worldwiderob]

You should've aimed for the blimp. MWAH HAH HAH! >:)

[UKCHAVAN197400]

I have shown your videos to high school pupil and even to College students, who really were ignorant of solar energy. Now every body is trying to make a small solar system for some utilization. With your inspiration,I made a solar system with satellite dish. Thanks for your Societal Help. Is there any effective solar light reflecting coating available in the market, which can be applied even by our high school students.I and our School students will be grateful,if you can help me in this regard.

[UKCHAVAN197400]

Mr.Dan, Thanks for all those nice videos, which you have prepared. Theoritically some scientist may say solar energy is powerful, can be collected and be used for various purposes. But a practical video certainly shows a positive effect on the society.

[sonofhendrix]

great video as usual, only you can make things like boiling some pond water interesting. lol.

[3of8jober]

Dan, Where did you get those dishes? Will you be selling them or were they surplus of limited supply?

[GREENPOWERSCIENCE]

Yes, I only need 5, there are 10 good ones in excellent condition. I will be selling the rest. The cost about $950 each with freight shipping. Almost $300 bucks for shipping alone. The original cost was listed at $2100

[DurAR89]

Thanx for that Parabolic Mirror, right now it's sunny, I tried it in a partly shaded area and it really works, my hands got real hot in about 2 seconds.

[GREENPOWERSCIENCE]

:-)

Be careful and have fun.

[TalksWithDirt]

By your timing and the volume of water it looks like you are getting about 400 effective watts into the water out of a max of ~3000 that dish intercepts. But a good boiler design will get you far more that that.

[killowatt47]

Thanks for the great videos Dan. Don't pay any attention to the rude people.

[ptryba]

Take a look at the mounts for solar cookers used all over the world.  I want to use a large pot for distilling water with a copper spiral tube to cool the steam to another container.

[Anothercoilgun]

May I also add to me last comment that we private people need not wait for the state. Dan is just one of a growing number of my dreams come true. Figments of my imagination of who energy is produced is no longer a figment of mine :)

[thatsandwich]

I'm sure people in 3rd world countries could make use of this.

[politicaldenali]

too bad the focal length is too short for the blimp.

[TimpBizkit]

Yeah, but you don't wanna go doing stuff like that with a hydrogen filled airship

[pubtor]

you might want to shoot it down next time

[virgojeep1]

hahahah Goodyear blimp FAIL...priceless

btw wouldn't it be possible to just take an old TV dish and buff it to a mirror polish instead of using reflective tape for diy peeps? Perhaps even have it chrome dipped.

[GREENPOWERSCIENCE]

Sure, Polishing it to a mirror takes the right tools, paste and time. Chrome plating is pricey. There is a 2 part mirror paint that costs $120 for the process including the hard coat.

[cyborgtroy]

I don't think satellite dishes are reflective, and tape won't get the right mirror finish.

[xtom1973]

the system is nice, but it has one flaw:

you need a sunny day and we dont have so much.

and murphy says you dont get sun when you need it.

the power has to be at least 1KW, when i compare time and amount of water with my 2KW waterboiler.

if you could get open tubes instead of parabols, make a circulating watersystem on it and lock it to a computer with sensors it could be worth something.

btw: nice videos!

[julzrafpilot]

this is a great idea it needs i think to be worked on a little though in the means of ease and means of use as mankind tends to be lazy i can't imagine people using this on a daily basis until an improvement comes along but i realy do think there is a massive urge for people like you to keep improving on ideas like this gr8 vid m8, would be nice to see more of green energy!

[0vrqq]

My god. I haven't ever seen anything like this in my life. thank you for posting this video.

[ohmslaw111]

Damn, that blimp was close at the end.

[GREENPOWERSCIENCE]

;-)

[63801170]

Dan... watch out for the "walking infront of your powerful ass-burning mirror" technique when going to the camera... :-)

[GREENPOWERSCIENCE]

:-) The focal point on these dishes is actually 2 inches below the rim so they are safe in regards to walking, looking is another story. The 35" dish I have has a long 30" focal point, that one is hazardous to walk in from of.

[0vrqq]

The only parabola's we deal with in my math class had the focal point inside dish is this true with all parabola's? where you wondering about the formula cus I have the formula's for a 2-d parabola. Quite honestly I don't know how I made it through algebra 2 without graphing these things. I guess I imagined them in my head.

[marthale7]

The problem with this that I see is getting the dish to track with the sun.

[ParapaDrifter]

you could program a computer to track it based on time, location, and date.

[xtom1973]

you can do it more comfortable with sensors, i guess.

[kickndave21]

hehe, big enough mirror focused on that blimp... no more blimp

[william12692]

lol that would be FUN to watch!!!!!

[jesslessthemess]

That`s pretty fricken fast! I`m sure a few of those and a couple of steam generators and you`ll be making all the power you could want

[danz409]

hey i can almost pinpoint your location, that blimp was in the filming of prototype this in San Fransisco a few days back and is on its way to port in new york. if you can bring up weather forecasts (wind direction- jet stream) clues to by natal environment. trees etc. probably some detail in other videos, you can get an idea of where you may be. good work tho. hope you someday become a proud owner of a solar collector plant producing mass amounts of electricity for everyone!

[egn2020]

forget the mirror look at that blimp

[GREENPOWERSCIENCE]

Pretty cool GoodYear blimp,.

[111alien111]

hay bro...shut ya fat fucking mouth nd make money off these things " free energy dipshit " loook up geothermal...get a ruff idea

[mpire82]

you are an ignorant rude un educated fool learn some social skills

[blueghist]

Lol, Bloopers, gotta love them.

Very impressive mirrors, thanks for the demo.