Solar Thermosiphon Effect in Action

[michael970]

thanks for the great video

[denisfur1]

Hi I am Brazilian and I liked the tips and put into practice

[alexsunlover]

Yup, just as I expected, that is a long shot for "thermosiphon pumping".

Scientifically, thermosiphon is nothing more that basic thermodynamics where hotter water, being lighter floats upwards against gravity and/or on top of colder denser water per fluid dynamics too.

[aaronandnicole]

Ive tried this with about 750 feet of 1 inch black water pipe. Rigged it up to the boiler drain for cold water intake and poppet valve for hot water push. Seemed like it was taking forever! I could tell it was moving but just so slow. I think the resistance through the pipe was to great even tho it was 1 inch. I ended up pushing it through with a pump and it got up to temp allot quicker.

[alexsunlover]

Wow, that is a long, long, long shot, but the thermosiphon will nonetheless works unless cooled by the ambient cold air. If possible insulate the solar heated water in transit for better thermosiphon flow.

[DaveTheyCallme]

Very very impressive., and thanks . Great illustration. Im going with Thermosyphon using an enclosed box and double pane window frame over the top with the water storage tank some 8' higher and 30' away ; i expect there will be flow but very very slow which is alright since it will have all day to work till i take my daily shower at 6 pm. Thanks for doing this for us. Very encouraging.

[TheNishnish1]

Could someone please explain the workings to me, i have a project which requires me to do computation based on thermosiphon flows using software related to thermo-fluid flows, will it be doable?

[cid911100]

si hay manera de controlar esto del calentamiento del agua .en un video de este mismo tema creado por brasileños le incluyeron un termostato o dispositivo de manera que cuando se ha alcanzado la temperatura del agua se cierra el suministro de agua al sistema de calentamiento solar .- este se hace mas eficiente y se evita estar tirando agua caliente . no recuerdo el nombre del video pero es el mas avanzado que he visto.

[alexsunlover]

@cid911100 Esto es 100% natural de termosifón "bomba", sin necesidad de recursos adicionales o gastos como las bombas de agua caliente, válvulas, etc

[sk8vip]

1 guy is a penguin, and him only like cold water! lol

[nordis2001]

If it works that well laying flat it should work great in an upright position.

[dotcombatgames]

this looks creepy with the red dye

[alexsunlover]

The video is taken from a system located just 1 degree North of the Equator and the elevated angle, a mere 5degree is sufficient for thermo-siphon effect to do its job while optimizing solar collection with a South orientation.

[WhyYesOn8]

I can't really tell from the video, but your solar thermos tubes seem pretty level. If they are, try slanting them more, even go vertical. With the hot end up. This will increase your convection current significantly. Great vid!

[alexsunlover]

Ha, ha, that is perfect natural music and motion synchronization. Entirely the Work of Nature!

[cyborggold]

Anybody else notice how the bubbles and dye seem to flow perfectly with the music when the video is showing the inlet flowing into the tank?

[metropool]

NATURAL GAS PRICES ARE AT RECORD LOWS

this is ridiculous

[cyborggold]

@metropool Is natural gas free? Have they made it so it doesn't pollute at all? (think distribution for that one as well, the trucks that transport it to some people run on gas/diesel) It may be cheap, but until it satisfies both of these questions, it is still beneficial to our wallets and our planet, no matter how small a gain, it is still a gain.

[alexsunlover]

Any non heat conductive material or bad heat conductive material are possible insulating material candidates: ranging from air to crumpled newspapers to discarded polystyrene packaging materials to clothings. Don't forget to always Repent, Rethink, Reuse, Recycle, Recover...

[catatonicable]

I have a drum I am going to use, it needs lagging with polystyrene to keep the heat in at night or cooler days, maybe a geyser blanket would do.? Any thoughts.?

[kneejerk100]

nice! great music. thanks for sharing

[BooKittyRadley]

Dude...do you know how many questions of mine you just answered?

Thanks for uploading. This is beautiful. :-)

[DicasVerdes]

Para quem está construindo um Aquecedor Solar Caseiro, este vídeo pode tirar muitas dúvidas e mostra como é que a água quente flui pelos canos. Super interessantes.

[alexsunlover]

@DicasVerdes Muito obrigado pelos elogios.

[alexsunlover]

This probably one green lava lamp that you can watch over and over again without feeling guilty because no part of Gaia was harmed in the filming of this solar thermo-siphon effect in action ;-)

[IronHorsez88]

Man O Man now I can listen to this amazing music and sing in the warm shower at the SAME TIME!! A miracle! Man O Man am I happy to hear that gorgeous music playing through the air as the birds fly all around me. Awesome day! Awesome day!

The moving colored water is also so dreamy, it makes me happy as a lark at the park after dark. Well, in this case in the sun ya thats much more fun.

Thanks cause I was lookin for this info.

[bogdan1978buc]

Very nice!

Thanks for posting!

[Majoofi]

very nifty. How hot does it get? is there a way to control how much heat you capture and use?

[alexsunlover]

Maximum to boiling point of water and then any additional solar thermal is dissipated as latent heat. No way to control the energy capture as it natural solar insolation; efficiency and cost effectiveness of energy conversion, storage, insulation are the key factors in determining the operational effectiveness of the solar vacuum tubes heating system.

[best333WillC]

Neat set up. How do you know which way it will go? Why did it go in the left side, and out the right? Why not vice versa?

Just curious, as I'm trying to make one of these right now to circulate water through my house for heat.

[alexsunlover]

Basic thermo-siphon effect dynamics. Hotter water is lighter than colder water. Cold feed pipe into solar collector should be lower than hot out pipe for it.

[dongatito]

Even more, why evacuated tubes and flat plate heaters efficiences are similar? Why if the evacuated tubes have better captation and less losses?. Your experiments let me see those things that i was believing, the overall thermohydraulics is better in the old flat plate than in the vacuum tubes. My name is Alberto , please forget my nick.

[dongatito]

Thanks Alex, exciting project. First, It can be clearly shown that painted water does not circulate into the tubes. Second, we can see bubbles which indicate boiling (not laminar flow). Thus thermal profiles shown by commercial vendors inside the tubes are not true, the main driving force is the boiling effect. I would be happy of being your friend and discuss these topics. Congratulations.

[buckstarchaser]

you can assume by the spilled water that the bubbles were from air trapped in the lines as this thing was recently filled.

The camera movement and harpsicord gave me a headache though :(

[greenegage]

Well I appreciated it as I'm doing a similar project myself. I also appreciated the music!

[alexsunlover]

Hi,

My pleasure, glad you find this clip useful and music amusing.

I am in the midst of adding narration, having got around doing it though.

[joethestrummer]

@alexsunlover

What exactly do you need to say?

[alexsunlover]

Correct, if only you can "see" and "watch" thermo-siphon effect as ubiquitous as drying paint!

[CTOL1]

@alexsunlover Much more rewarding than watching a "lava lamp" though

Good stuff

Solar as heat is so inexpensive than electric PV

GOOD VIDEO

[pupplesan]

That's about as exciting as watching paint dry.