Solar Water Heater Demonstration

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  • เผยแพร่เมื่อ 24 ธ.ค. 2024

ความคิดเห็น • 394

  • @winfordnettles3292
    @winfordnettles3292 ปีที่แล้ว +27

    Thanks for posting. In 1970, I build one of these for a science fair project. I elevated the storage tank (a 5 gallon metal can) and used thermal convection to circulate the water. Worked great and was a great demonstration of solar water heating on a budget. The whole device cost less than $20 to build and was a fun project.

    • @CharlesGann1
      @CharlesGann1 ปีที่แล้ว +3

      That was my exact thought using thermosyphon. The Mother Earth News featured a similar set up recycling a refrigerator box.

    • @drd1924
      @drd1924 ปีที่แล้ว

      For some reason I had a problem getting mine to circulate by convection.
      Once the water boiled it caused pressure in both directions within the pipe and would just repeat with no circulation

    • @winfordnettles3292
      @winfordnettles3292 ปีที่แล้ว +6

      @@drd1924 The tank has to be elevated above the top of the collector. The water should never boil. The size of the hot and cold pipes to the collector should also be of sufficient girth to allow unrestricted flow between the storage tank and the collector. I won the 6th grade science fair with mine. I was 12 years old then. Enjoyed the heck out of building it. I still have the collector that I built in 1970!

    • @drd1924
      @drd1924 ปีที่แล้ว +1

      @@winfordnettles3292 Gotcha, thank you sir....Perhaps my pipe size was too small to allow sufficient flow for exchange...Will try again. I was also thinking of installing a check valve to ensure proper flow direction should boiling occur

    • @andybilakshow260
      @andybilakshow260 ปีที่แล้ว +2

      @@drd1924 "Check valve"

  • @lawrencewillard6370
    @lawrencewillard6370 ปีที่แล้ว +19

    In Australia, 80's. There was a same system unit called 'Suntrac'. Had 2 reflectors, about 5ft long, 2-3 ft wide. Tank on the top, clear covers, and a water pressure tracking system. The centre pipe was sealed with a gas inside, this pulsed the heat into a sealed end bulb within the tank. Worked well.

  • @joetrump5844
    @joetrump5844 6 ปีที่แล้ว +5

    In the '80s........I had a house with two four by eight solar panels in Massachusetts......... With one sonny day it gave me 160 gallons of hot water..... Heat exchanger, recirculation pump, anti-freeze.........it was all a great idea and savings..........this system looks to be more compact, and more efficient.
    Thanks for sharing.

  • @______IV
    @______IV ปีที่แล้ว +2

    FYI, that type of Pyrex measuring cup is made from soda lime glass. Rapid temperature changes, such as pouring boiling water into it, can lead to violent shattering of the glass.
    Cool demonstration though! Thanks for sharing.

  • @rvangaal7859
    @rvangaal7859 ปีที่แล้ว +1

    Very nice in summertime
    Heating the pool ?

  • @NVOutsider
    @NVOutsider ปีที่แล้ว +17

    Back in the early 80's I worked for a company who installed this type of hot water system in Nevada. Pre built 8" long parabolic collectors with blackened copper pipe set into an aluminum framework on the roof of the house. the system had a sun tracking feature that kept the collectors facing in the optimum direction while set at the best average angle to the sun for the latitude. This was a closed loop system. Meaning no household water entered the system. The system water was pumped through a heat exchanger tank and back up into the collectors. The house hold water passed through the heat exchanger into a storage tank and then into the existing hot water heater and into the house. This method allowed the existing system to be isolated in case of emergency. On many occasion during initial start up I watched thermometers go from ambient air temps of 50 degrees F to over 250 degrees F as fast as the needle could move. As the system would run this temp would come down to a more reasonable 200 degrees f. The normal operating temp of the system was designed to keep the household water in the 105 to 115 degree range. This technology should and needs to be utilized more these days.

    • @drd1924
      @drd1924 ปีที่แล้ว +1

      Pretty trick for the 80's, especially having Sun Tracking with no laptops

    • @NVOutsider
      @NVOutsider ปีที่แล้ว +6

      @@drd1924 The tracking feature was simplicity at it's best. There was a photovoltaic eye that had a small riser held above it essentially dividing the eye in two. as the sun moved (earth rotated?) and exposed the eye to sunlight a small motor connected to a chain drive would activate moving the collector just slightly to re-shade the eye and stop the motor. The riser was flat on the bottom and half circle on the top this allowed the eye to catch the correct amount of sunlight throughout the year without adjusting it.

    • @drd1924
      @drd1924 ปีที่แล้ว +1

      @@NVOutsider Very creative!, Thanks for the explanation
      I figured it had to utilize some sort of CDS cell, whats puzzling me is...
      Did it know to reverse directions in the morning to start over or did it have to be reset every day?

    • @NVOutsider
      @NVOutsider ปีที่แล้ว +3

      @@drd1924 the riser piece was 1/16" to 1/8" thick painted white aluminum. It sat directly over the center of the eye. so when the sun set the collectors stayed facing west as the sun hit the eye in the am everything would rotate to the east and start the process over. I have a feeling my explanation is really dumbing it down due to my 18 yo lack of understanding and it being about 40 years ago. The system was manufactured in Arizona by a company called USMC (?)
      What is a "CDS" cell?

    • @drd1924
      @drd1924 ปีที่แล้ว +2

      @@NVOutsider Hi, A CDS Cell is short for
      Cadmium Sulphide (a light controlled variable resistor, The Photoeye)
      Thanks again for further explaining, rotating would make more sense. I was picturing the mechanism Panning and could only think of using limit switches to stop the movement and reset it. But simply rotating would simplify it even further...Very Cool

  • @msitarzewski
    @msitarzewski 7 ปีที่แล้ว +11

    Thank you for taking the time to put this together. While there are lots of interesting comments, know that I found you while looking for examples of how to heat just over a cup of water to use in my Aeropress. I don't need a capacity of more than one cup, so this solution is among the tops. We're soon to be full time RVers, and want to figure out unique ways to conserve LP/electric. Thanks again! :)

  • @someonecalljp
    @someonecalljp 3 ปีที่แล้ว +15

    I though about this concept a few years back. I can see that it works! What I was also thinking was, since I live in a tropical country we have great exposure to the soon through the year, so I was thinking that it might be possible to reach boiling point with a little bit more industrialize set up in order to be able to get salty water from the sea and take the salt out! It could be inefficient but the sun is free so...

    • @jyvben1520
      @jyvben1520 ปีที่แล้ว +6

      a donut ring of seawater, the vapor dripping from an upside down cone in the donut hole to the freshwater container underneath, the tide refilling the seawater part, solar power to provide electricity to pump the fresh water up to a roof tank

    • @gman21266
      @gman21266 8 หลายเดือนก่อน

      1) Build parabolic mirror similar to the size in this video.
      2) Install a clear glass oven pan with sea water in the pan.
      3) The sea water will evaporate and rise as steam.
      4) That steam is pure water.
      5) Instal a thin sheet of clear acrylic a few inches above the pan. But angle the acrylic so that the steam droplets which gather on the àcrylic will slide down the surface of the acrylic and fall off into a separate pan.
      Voila! Clean water.

  • @Qui-9
    @Qui-9 ปีที่แล้ว +1

    This is great! I wonder how much difference it would make to paint the pipe a flat black, just a thin coat, maybe with BBQ or exhaust system paint, or if oxidized copper is sufficient?

  • @captainheinie6355
    @captainheinie6355 8 ปีที่แล้ว +7

    Very nice idea, and well explained. It has got me thinking. Also thank you to Pete's idea of painting the pipe black.Thank you.

  • @betespatiotemporelle
    @betespatiotemporelle ปีที่แล้ว +1

    A good solar still easily reaches 50°C under sunlight and offers pure, hot water. An autonomous, off-grid user doesn't need those expensive solar hot water panels. Just a plastic sheet and a pump is enough :-) .

  • @passdasalt
    @passdasalt 6 ปีที่แล้ว +4

    I bought a vacuum tube commercial water heater. Free hot water all year round (with a little gas assist in winter).

  • @carlosalbertosilva3176
    @carlosalbertosilva3176 2 ปีที่แล้ว +1

    I am really grateful for your precious time, used in this demonstration video of this simple and at the same time so fundamental and important for the development and improvement in our homes, not to mention the economy with the consumption of electric energy, and not to mention that the steam of water can also be used to generate mechanical and electrical work, through a hot air engine using a coil for example. congratulations and thank you very much. big hug my brother

  • @JK-Visions
    @JK-Visions 2 ปีที่แล้ว +1

    Well not with the prices going tenfold in a few months this will become very very relevant. Thank you for your great video. I have about 16 months to master how to use alternatives for heating our house. I found already some very usefull stuff.

  • @DocScience2
    @DocScience2 3 ปีที่แล้ว +2

    For any readers here, at point 1:30 the pipe sizes is shown as 1/2 inch copper fittings.

  • @rebelforgod
    @rebelforgod 8 ปีที่แล้ว +17

    Mount this below a water tank, then allow convective circulation to heat the water in the tank by day, then by night, the heated water will stay elevated in the tank.
    Likewise, make another radiator, but mount it above a second tank, to cool the water by night with convective circulation, then by day, the cool water will stay low in the water tank.
    This way, you have both hot and cold water available.

    • @pbsluvr312
      @pbsluvr312 ปีที่แล้ว

      Thank you for this comment.

  • @AquaMarine1000
    @AquaMarine1000 ปีที่แล้ว +1

    At 4:10 - On an annual basis, the Earth's tilt remains constant. The changing angle of sunlight is due to the Earth's orbit around the Sun.

  • @VAspeed3
    @VAspeed3 ปีที่แล้ว +1

    I built one of these for a science fair project in the late 1970's. I painted the copper pipe black, which made it heat up a lot faster than the bare copper.

  • @MrKeithsplace
    @MrKeithsplace ปีที่แล้ว +1

    Would it not be better to paint the pipe flat black?

  • @964cuplove
    @964cuplove ปีที่แล้ว +1

    Would blackening the pipe add efficiency ?
    Could you make a return pipe e.g. behind the mirror and a reservoir on top using thermal circulation to heat a larger volume ?

  • @justtinkering6713
    @justtinkering6713 ปีที่แล้ว +1

    I built one like that in 1964 about 59 years ago. When I was a teenager. Got very hot, steam.

  • @brianstevens3858
    @brianstevens3858 ปีที่แล้ว +5

    Use a horizontal arc that way it always point at the sun, the double curve is harder to make but doable with a flexible material, or just section and angle the sections to follow. This obviates the need for tracking. Also paint the pipe with flat black high temp. engine paint, so you get more frequencies absorbed.

    • @fajile5109
      @fajile5109 ปีที่แล้ว

      I wonder if we could use the system to heat a working fluid so it could expand and push a hydraulic piston to follow the sun? My idea was to use the heat from solar panels to automate their turning.

    • @brianstevens3858
      @brianstevens3858 ปีที่แล้ว

      @@fajile5109 "Sterling engine" use the heat from the sun and the cool from the collectors shade.

  • @drovid008
    @drovid008 7 หลายเดือนก่อน

    Just a suggestion, wouldn't it be better to have the reflector support on the outside? Because when there's those wooden things inside, the shade from each would decrease the overall temperature as sun rotates?
    I'm about to build something similar for steam engine.

  • @bigal25938
    @bigal25938 ปีที่แล้ว

    How much water you producing with that little thing? When the power is off I have laid black garden hose in the yard and fill it with water and let it stand for a bit. Gets pretty hot. Won’t boil but hotter that you can stand.

  • @Kayzef2003
    @Kayzef2003 7 ปีที่แล้ว +2

    It felt like I was watching the discovery channel. Great narration.

  • @davidrobertson5700
    @davidrobertson5700 ปีที่แล้ว +1

    Not paint pipe black no ?

  • @claudiuneamtu891
    @claudiuneamtu891 ปีที่แล้ว +1

    Why not paint the pipe black?

  • @beebob1279
    @beebob1279 2 ปีที่แล้ว +1

    I am assuming that you would need a water expansion system for the hot water. Also, I would use a glycol of some sort instead of water to prevent freezing in winter.
    How about a large insulated heat sink to preserve the heat. Have the tubing to the house run through the sink to absorb the heat and distribute either to the domestic hot water or some form of radiator set up. I'm looking at our mountain house and trying to keep the energy bills low enough so that I don't have to sell it with the prices of power these days.

  • @richardlewis7626
    @richardlewis7626 6 ปีที่แล้ว +2

    Question..... do you have any data on a max temp at a constant flow of, I’ll shoot low, 1 GPM? Standing water isn’t a usable resource. I understand this is a demonstration but it looks to me as if it’s being manipulated by showing this unit in a static situation. I would love to see a full scale unit in operation with the heated water being used. I guess I could make a cup of tea with this in an emergency.

  • @waynepetrevan
    @waynepetrevan ปีที่แล้ว +1

    odd that he makes no mention of locating the copper tube at the focal point.....duh.....

  • @lesleywillis6177
    @lesleywillis6177 ปีที่แล้ว

    Interesting if you need really hot water. However it cannot collect any more heat than what is collected by the size of the reflector. If you simply had black pipes covering the same area, the heat collected would be the same?

  • @rronmar
    @rronmar 6 ปีที่แล้ว +2

    And that is why the temperature wasn’t going any higher. That water that was steaming/evaporating was taking a substantial amount of heat with it...

  • @Tatertot24401
    @Tatertot24401 8 ปีที่แล้ว +1

    how many feet of copper would it take for an average sized family house. Using hot water sparingly. great video!!!!

  • @LaughingInfidel
    @LaughingInfidel 4 ปีที่แล้ว +2

    I could be misremembering my college physics, but it's not a coincidence that it stopped at the boiling point of water. It stopped there because the water was boiling. Liquid water can't get hotter than the boiling point. All the energy going into the pipe was going into producing water vapor. After all the water boiled off, the pipe would start getting hotter. It might have melted the copper eventually.
    It would be interesting to know how big a reflector you'd need to heat a water heater full of water from say 70 F to 160 F over the course of a day.

  • @GinaKayLandis
    @GinaKayLandis 2 ปีที่แล้ว +1

    Wondering what you would recommend as a simple insulated hot water storage item that is only about 5 -7 gallons? Lots of off grid van dwellers or bushcraft folks could use this sort of heater and store water to cover a 12 hour period. 24 hours would be even better. They could mix cool water with the hot water to use for many applications.

    • @raymondclark1785
      @raymondclark1785 ปีที่แล้ว +2

      RV water heaters are 6 gallons , maybe one from a wreck

    • @davidgardner1675
      @davidgardner1675 ปีที่แล้ว

      Drill ports on a cooler storage water in the cooler

  • @Chobaca
    @Chobaca ปีที่แล้ว

    Gluing the reflector would make a better reflection right?

  • @rauldukeduke3040
    @rauldukeduke3040 8 ปีที่แล้ว +29

    You should narrate unsolved mysteries

    • @duggydugg3937
      @duggydugg3937 7 ปีที่แล้ว +2

      Raulduke duke
      Anybody remember spooky voiced Vincent price .?. Would love to have heard him say..autogyro.. 😊

    • @lessmith7084
      @lessmith7084 6 ปีที่แล้ว +1

      Raulduke duke r
      Qm

  • @colbaronrojo
    @colbaronrojo ปีที่แล้ว

    cuanto tiempo le tomo en alcanzar su temperatura final? . de que tamaño es el concentrador

  • @thetruthserum2816
    @thetruthserum2816 3 ปีที่แล้ว +1

    I wonder if it could be used for a Livestock tank defroster...

  • @outtowin75
    @outtowin75 4 ปีที่แล้ว +2

    What's the heat transfer to flow rate?
    Thanks for the vid!

  • @TheSaskachewan1
    @TheSaskachewan1 2 ปีที่แล้ว

    What is needed to size it up to make it practical. Say enough water to have a shower?

  • @chrisdaniel1339
    @chrisdaniel1339 2 ปีที่แล้ว +2

    Very informative video. It is great that the use of copper is limited to one central pipe vs a long copper coil or multiple parallel copper pipe collector as copper is expensive. While glass mirrors would reflect more solar energy mirror polished stainless steel sheet metal would likely be more cost effective. Solar concentration is a great technology but it does have some drawbacks to be usable for the lay consumer. Boiling in a water heating system is not ideal as pressure builds up and could cause bursting issues. There would have to be some type of circulator, heavily insulated HW storage tank, temperature monitoring device, and a device that will shut off the circulator when approaching the boiling point of water as well as to rotate the collectors out of the sun. Also having to manually adjust the angle of the unit every few days is not feasible there would have to be some type of mechanical unit to pivot the collectors.

    • @l0k048
      @l0k048 ปีที่แล้ว

      if you lay it east-west it will always be pointing to the sun

  • @victoryfirst2878
    @victoryfirst2878 ปีที่แล้ว +1

    I am going to try this to heat my water supply with this unit. Do you have any recommendations from yourself or TH-cam videos you think are worth looking at and executing on that information Sir ??? Thanks

  • @bastrous9121
    @bastrous9121 ปีที่แล้ว

    Did I miss something?
    Where do you find the focal point of the mirror?

  • @johanwise9713
    @johanwise9713 ปีที่แล้ว

    The technic is called "solar collector" and is much more effective to heat up water directly as solar cells - where the flat collector have lower efficiency than tube collectors, even at low outside temperatures.

  • @bluehue2482
    @bluehue2482 4 ปีที่แล้ว +3

    Thanks for sharing practical scalable DIY tech that anyone who's sat in a car on an overcast winters day could understand the principal being demonstrated. Thanks nice modular system.👍😊

  • @selvamthiagarajan8152
    @selvamthiagarajan8152 ปีที่แล้ว

    What is the length of pipe required to boil 1 liter water in this method please

  • @VivieLittleGhost
    @VivieLittleGhost ปีที่แล้ว +1

    And the wood directly stick on the reflector… enjoy the fire soon!

  • @WildManDanWMD
    @WildManDanWMD 2 ปีที่แล้ว

    Paint tube black? Performance at winter temps? Use anti-freeze circulated via pex to heat tank?

  • @neilvandermeer213
    @neilvandermeer213 6 ปีที่แล้ว +2

    I would like to see a test made in Canada when the temperature is minus 25 degrees Celsius. Has there ever been anything like that done before??

    • @egria
      @egria ปีที่แล้ว

      Have you seen pictures of mountaint skiiers sunbathing with just swimsuits on the top of the mountains while air temperature is minus? Or just look stand behind the window on sunny days. For Canada is large - efficiency depends on latitude and time of year. But concentrated sun is powerfull.

  • @robertl.fallin7062
    @robertl.fallin7062 8 ปีที่แล้ว +3

    my Grumman Sun Stream solar water installed in 1978 COOKE water for thirty years before the A O Smith stainless steel tank began leaking. The optimal tilt is 37° , I had 45° in my location. on Dec 21 , a partly dsy, the late afternoon tank temp was 97°. 80 gallons of warm water when the incoming temp was 52°.
    Cost with tax credit: 1695.00
    Install labor 350
    antifreeze replace 300
    total cost $2445
    reduction in electric bill was over 200 kwhr per month
    200 kwhr yearly or $240.00 per year electric cost
    80,000 lbs of pollution !
    A hybrid water heater cost $1395.00 and will reduce electric bill almost as much as the solar water heater.

  • @andybilakshow260
    @andybilakshow260 ปีที่แล้ว

    All these solar panels sitting on top of homes have lots of heat. All that heat reduces the panels life and efficiency. They need to be sealed then water induced. Thus providing free electricity & hot water without depleting your electric reserve.
    I've done it on a small panel. Used a parabolic dish to focus the sun on the panel. Then ran water through it. Resulting in tripple the electric output~!

  • @briha3142
    @briha3142 3 ปีที่แล้ว +2

    Would like to have seen if that device could heat running water THROUGH it, to actually know if it is feasible to install into an off-grid water system! Putting a half cup of water into ANY metal container, out in the sun, even without a parabolic refractor, would still heat the liquid!

  • @kreynolds1123
    @kreynolds1123 ปีที่แล้ว +1

    Imagine a connecting the bottom to a small plex hose that goes to a small cup reservoir elevated to the just below the top of the solar exposed pipe when elevated as in the video. As water evaporates/boils away at the top, new cold water is gravity fed into the bottom from the reservoir. Helping keep water throughout the solar exposed pipe for maximum heat transfer. Then one can use the steam given off at the top to cook food in an insulated steam box.

  • @TymexComputing
    @TymexComputing ปีที่แล้ว

    You read my mind :) - good mastering and montage

  • @thomasmurray4717
    @thomasmurray4717 6 ปีที่แล้ว +1

    Thank you for a good video.
    Can you show how to use this in a thermosyphon? (sp?).
    If you can heat a drum of water with this, I can see possibly heating a house with it.

    • @sgirrel
      @sgirrel  6 ปีที่แล้ว

      Theoretically, yes.

    • @beebob1279
      @beebob1279 2 ปีที่แล้ว +1

      You commented a long time ago. I've thought about a heat sink of some sort and then draw domestic water from it as it circulates through. I'm seeing some channels showing this method and it's working for the homeowners. My issue is that a lot of them like this channel do not reply to comments which becomes frustrating.
      Have you tried the set up or did you put it on hold?

    • @thomasmurray4717
      @thomasmurray4717 2 ปีที่แล้ว +1

      @@beebob1279 I am weighing options for a later date.
      Thanks for getting back with me.

  • @JamesFraley
    @JamesFraley ปีที่แล้ว +1

    This reminds me a lot of the solar air heater. It looks good with static air. But once you start cycling air through them, you find they have a very low capacity to heat a volume of air. I suspect the same is true with your solar water heaters.

  • @isauracarrasco4752
    @isauracarrasco4752 ปีที่แล้ว +1

    Thank you so much, i was looking for this for a while

  • @orion3267
    @orion3267 7 ปีที่แล้ว +3

    The three words " some assembly required " doesn't scare people away from projects like this. It's " government taxes everything".

    • @fvrrljr
      @fvrrljr 6 ปีที่แล้ว

      hit the nail on the head, OLE!

  • @carollarke5249
    @carollarke5249 8 ปีที่แล้ว

    Thanks for posting. for flowing hot water I assume you add the necessary plumbing?

    • @sgirrel
      @sgirrel  8 ปีที่แล้ว

      Correct.

    • @MrMarkRoads
      @MrMarkRoads 5 ปีที่แล้ว

      Also much, much more pipe. Flowing cold incoming water will cool the pipe fast.

  • @Worrell057
    @Worrell057 6 ปีที่แล้ว +2

    Your video was perfectly presented. So very informative.

  • @anthonylawrence3265
    @anthonylawrence3265 2 ปีที่แล้ว +1

    A small portable version of this could be used in the garden to deliver scalding water to kill weeds

  • @Daniel.ÎîîîÎ
    @Daniel.ÎîîîΠ3 ปีที่แล้ว

    a flat pipe will not be more efficient ?

  • @fajile5109
    @fajile5109 ปีที่แล้ว

    I think i came up with a one way heat diode. My idea is that id have a few energy collectors and a heat battery. Have them dump the excess heat into the battery. Otherwise it would just heat up a water heater. Or it would heat up a air dryer. I have an idea for a filtration system that uses water instead of expensive filters. I haven’t figured it out yet but ive seen the system used in paint booths. I just need to dry the air after it comes out or it would grow bacteria eventually. Also we can use our waste stack as a heat dump. I was thinking we use our sewer as a geothermal heat dump. So the first goal is to generate an excess of heat. That way i have enough of a heat differential to generate energy. Once the heat battery is hot enough for steam its a wrap free power from nature with just maintenance or what ill do is select materials that need almost no maintenance. Actually im thinking of making a open source youtube series on what i think the perfect house would be. With some help i believe instead of a net zero house we can make a -100% house. With it capable of absorbing and holding nearly every pollutant humans make and turning it into a clean energy. With the filtration system i mentioned we would be cleaning the air we take in from the outside of road dust and other fine dust pollutants. We would have a cooling effect on the ground similar to the shade a natural forest would have. (Thermal pollution a theory i came up with in 2010.) and most importantly and obviously provide energy instead of take energy.

  • @ukaszkuczynski3988
    @ukaszkuczynski3988 2 ปีที่แล้ว

    Is it more effective than black background?

  • @TurinTurambarTolkien
    @TurinTurambarTolkien ปีที่แล้ว

    Obviously, in order to be anything other than a novelty, the hot water would have to somehow be continuously pumped, as heated, into some sort of a reservoir tank. Then, when full, the system would have to know how to stop heating unless one wants an explosion. "Little" question, like that, make the difference.

  • @212025510
    @212025510 ปีที่แล้ว

    Why isn't it used broadly? Because it works only in summer - that's 1/3 of the year. And you need your own roof for the installation, which means you can't have it if you live in an apartment.

  • @steveoshaughnessy3736
    @steveoshaughnessy3736 8 ปีที่แล้ว +16

    Any needing a description of how a water valve works probably doesn't have the skills to do this.

  • @vinnyb113
    @vinnyb113 6 ปีที่แล้ว +1

    Morton's painting the pipe black increase the temperature somewhat

  • @A1DJPaul
    @A1DJPaul 8 ปีที่แล้ว

    What country / climate are you in ?
    How would this work in England Uk Temperatures ? any info / ideas ?

    • @sgirrel
      @sgirrel  8 ปีที่แล้ว

      This was built and shot in Los Angeles, California, but as one can see in the video, the ambient temperature in the shade was 68 degrees. Not that hot.
      One can get a temperature rise on a cloudy day just from infrared heat through the clouds, but of course, nothing anywhere close to approaching direct sunlight.
      Even in England, one should get some temperature rise, but one would also need substantially more collection area to make it fairly effective.

    • @A1DJPaul
      @A1DJPaul 8 ปีที่แล้ว

      ***** Thanks. 68 is good temp' for English summer. we occasionally hit 80 but only for a couple of days. its mostly 55 to 70 / 75
      90 is a freak in weather . ( 32 ) ( 32 hot )
      Its all very much Science / locality.
      But i like your ideas well done good vid'
      Many thanks from Yorkshire England Uk .

    • @christophergreen5735
      @christophergreen5735 8 ปีที่แล้ว +1

      A friend of mine in the UK built a solar heater like this and it was so hot it blew up the two thermometers he had on hand.
      I have read on a forum I belong to that some DIYers have measured temps in excess of 220+*F in their air heating systems. One of these was in Pennsylvania in the winter...

  • @charlesnettles6249
    @charlesnettles6249 6 ปีที่แล้ว +3

    If you install one way check valves the heat of the water will propel the water through the pipes/hose on a continuous flow. And I agree painting the copper pipe black will increase it's effectiveness and will draw the water from a tank or vessel and pump it into another tank or vessel.

    • @Chimonger1
      @Chimonger1 ปีที่แล้ว

      This can heat fluid to circulate in hydronic heat system, too…putting 1-way check valves moves the hot water in the direction wanted, so it can recirculate.
      Can also use thermostat to control it. Needs an expansion tank also.
      But it’s a fairly low-tech system that can work even in winter, as long as there’s enuf size to system, & cloud reflectance.
      A backup small tank water heater can also be in the loop, for dim days & nites.

  • @splitpea6515
    @splitpea6515 8 ปีที่แล้ว +32

    that bloody music

    • @fvrrljr
      @fvrrljr 6 ปีที่แล้ว

      i didn't notice till i saw vid a second time

    • @fvrrljr
      @fvrrljr 6 ปีที่แล้ว

      by the way he's on another channel singing. Get on Your Horse (And Ride) - Randall Weatherington the sun fried his brains

    • @kmw4359
      @kmw4359 4 ปีที่แล้ว

      Just mute and turn on captions

    • @earthenscience
      @earthenscience ปีที่แล้ว

      @@kmw4359 I thought the music was genius.

  • @vinesh9581
    @vinesh9581 8 ปีที่แล้ว

    I want to experiment a very small closed loop with a heat exchanger at one one. Aside from water can i use a type of refrigerant in this design to get higher temperatures?

    • @sgirrel
      @sgirrel  8 ปีที่แล้ว +1

      Refrigerant?
      You can use an anti-freeze/coolant mixture for more stable temperature in the circulation, and/or areas of freezing temperatures.
      Unlikely you will get higher temps.

  • @PetesShredder
    @PetesShredder 8 ปีที่แล้ว +42

    Maybe paint the pipe black too

    • @sgirrel
      @sgirrel  8 ปีที่แล้ว

      See comment about this.

    • @marcjtdc
      @marcjtdc 8 ปีที่แล้ว +1

      What comment? Where?

    • @mladenjarcov931
      @mladenjarcov931 8 ปีที่แล้ว +1

      Pete's Shredder.

    • @sgirrel
      @sgirrel  8 ปีที่แล้ว +7

      Buried in the comments.
      I did blacken the pipe with negligible results.

    • @mikel4510
      @mikel4510 8 ปีที่แล้ว +4

      Black coverings will absorb some of the heat needed to hit the copper. Not a good idea for highest efficiency.

  • @roddytoddy7140
    @roddytoddy7140 8 ปีที่แล้ว +6

    Turn the noise off, or is it music?

  • @texjames2000
    @texjames2000 8 ปีที่แล้ว +1

    well what are you going to do with that 1/2 cup of water? need to be about 150 times that size to heat water for any practical application

    • @hassannawaz
      @hassannawaz 8 ปีที่แล้ว

      Maybe make a bit longer pipe and then attach it to a water source. it would probably output 10-20 litre before getting too cold. But i could be wrong

    • @danb3527
      @danb3527 8 ปีที่แล้ว

      This is a gimmick. The guy does not mention flow rate of water through the device. You see to heat any useful amount of water the flow rate would be too fast to heat the water.

    • @Kube_Dog
      @Kube_Dog 8 ปีที่แล้ว +2

      He said this build was just for demonstration. Obviously, to be useful, it has to be bigger.

  • @justtinkering6713
    @justtinkering6713 ปีที่แล้ว

    Coating the pipe with black soot might help. Connect a heat engine to it to generate electricity.

  • @abigail_mcleod
    @abigail_mcleod 3 ปีที่แล้ว

    I wish i have the curve scale in cm since i dont have printer workin in my house to print the curve model right now.

  • @ZsOtherBrother
    @ZsOtherBrother 3 ปีที่แล้ว

    Nice work.
    What reflective material did you use?

  • @vanorsdelry
    @vanorsdelry ปีที่แล้ว

    If you connect this to a hot water holding tank, then add a Stirling engine to the top of the tank, you get even more from the setup

  • @Swerve744
    @Swerve744 8 ปีที่แล้ว +4

    Would have liked to see the copper pipe painted black to see the difference. Very good video though. Thanks.

    • @sgirrel
      @sgirrel  8 ปีที่แล้ว +3

      I did blacken the copper pipe to see if I could get additional temperature or a faster temp rise, but it appeared to have a negligible effect.

    • @raysills
      @raysills 8 ปีที่แล้ว +1

      While black paint does absorb heat, I suspect that the reason it did not help is that copper is such a good conductor of heat, that the heat absorbed is carried inward (toward a cooler part of the pipe), and transferred to the water. As long as the outer surface of the pipe is hotter than the inner surface, the heat will flow inward.

    • @julier1080
      @julier1080 8 ปีที่แล้ว +1

      Also, while black is the best color for absorbing heat, it is also the best at radiating it. So unless it radiates all of it IN, toward the pipe, the effect would indeed be negligible.

  • @PradeepKumar-ps4cs
    @PradeepKumar-ps4cs 6 ปีที่แล้ว

    Did you use lead solder? I am scared of lead being used in plumping work.

    • @sgirrel
      @sgirrel  6 ปีที่แล้ว +1

      You should be scared to use lead solder. Plumbers grade, lead free solder was used.

  • @mmthewonderdog
    @mmthewonderdog 3 ปีที่แล้ว

    where did you get your reflective material

  • @use_less43210
    @use_less43210 ปีที่แล้ว

    I understand not going to the extra trouble to enclose the pipe or glaze the entire apparatus. What I don't understand is why you didn't bother to paint it black, which would have been very simple, and would have increased temps significantly.

  • @ThaRealKalimpa
    @ThaRealKalimpa 8 ปีที่แล้ว +1

    It's not boiling, because you're only measuring the hottest part of the water, which will float to the top of the pipe. In order to get it boiling, all of the water needs to reach about 99 °C. But if that would happen, most of the water will just shoot out of the pipe. Just like when boiling water in a testtube. Nice idea though.
    If you know the exact amount of water and the temperature rise over time (you need to empty the water into a cup for this, to get precise readings of the temperature), you can calculate the heating power.

    • @sgirrel
      @sgirrel  8 ปีที่แล้ว +1

      On another day when I was not shooting video, and there was no wind cooling the pipe by blowing over it, the water did reach boiling, I could hear it bubbling in the pipe, and see a few drops of water splashing out the top.

  • @Khaztr
    @Khaztr 4 ปีที่แล้ว +1

    If the whole point is to show how effective concentrating sunlight is, why wouldn't you test it along side a copper pipe without the reflector? Based on what we see in the demo, for all we know a plain copper pipe would have gotten just as hot in the sun.

  • @oldschool-68
    @oldschool-68 8 ปีที่แล้ว +11

    Covering the assembly with clear plexiglass or glass to incase it will drive temperatures up even more. Like a greenhouse effect.

    • @sgirrel
      @sgirrel  8 ปีที่แล้ว +3

      True, and it's mentioned in the video.

    • @sgirrel
      @sgirrel  8 ปีที่แล้ว +1

      Thank you.

    • @ahaveland
      @ahaveland 8 ปีที่แล้ว +4

      Here's another tip - try using a candle flame to coat the copper pipe with soot to increase absorption.
      Over 20 years ago, I made a dish collector from a 1.2 meter diameter satellite dish coating with aluminum foil and later a mylar survival blanket which could be focussed using air pressure.
      After coating the bottom of a small pan with soot, it was able to make a cup of tea in about 2 minutes!
      If I had the capability then, I would have made a hollow carbon-blacked copper sphere to collect all the energy without any reflections, or make a hollow sphere out of thin copper tube.
      For a trough setup, a crescent-shaped pipe formed to capture reflections might be worth experimenting with!

    • @sgirrel
      @sgirrel  8 ปีที่แล้ว +1

      Soot is actually an insulator. For best results, the pipe should be chemically blackened.
      Spherical reflectors make for very good cookers.

    • @LeeBlackish
      @LeeBlackish 8 ปีที่แล้ว +1

      What chemical?

  • @matthewjakab9713
    @matthewjakab9713 6 ปีที่แล้ว +1

    Great video. I too am interested to understand whether concentrating solar energy in this way can be used to heat the air in an enclosed cabinet that can then be pumped to cold indoor areas.

    • @sgirrel
      @sgirrel  6 ปีที่แล้ว +1

      Theoretically, yes.

  • @nastydog131
    @nastydog131 7 ปีที่แล้ว

    Awesome video, First time iv'e heard of Parabolic and truly interested in learning more about it. Could this method be used in making hot air ?

    • @sgirrel
      @sgirrel  7 ปีที่แล้ว +1

      Theoretically, yes.

  • @subhashgawarikar3396
    @subhashgawarikar3396 4 ปีที่แล้ว

    Nice demonstration and explanation. Thanks for the video.

  • @alexmanzanero
    @alexmanzanero 6 ปีที่แล้ว

    any links or ideas to where to get parabolic shapes used?

    • @sgirrel
      @sgirrel  6 ปีที่แล้ว

      On the internet. That's where I found the pattern for this.

  • @fisenknan3981
    @fisenknan3981 4 ปีที่แล้ว

    Good presentation, TQVM

  • @robertheal5137
    @robertheal5137 8 ปีที่แล้ว

    What is the shiny material that you used to make the reflector ?

    • @sgirrel
      @sgirrel  7 ปีที่แล้ว

      From Carnival Mirror.

  • @brettmciver432
    @brettmciver432 8 ปีที่แล้ว

    Here's an out of the box suggestion chip packets turned inside out as the reflector (same as Mylar??)
    Just a thought

    • @sgirrel
      @sgirrel  7 ปีที่แล้ว

      Yes, but you still need to spread them out mirror smooth.

  • @cupidstunt8136
    @cupidstunt8136 6 ปีที่แล้ว

    it will operate at peak efficiency during the middle of the day. the early morning and late afternoon will only be at 1 tenth of the solar exposure during the middle of the day

    • @roberttill3787
      @roberttill3787 6 ปีที่แล้ว

      You are correct but if you position the reflector to catch the suns rays at the maximum point of the day, the remainder each side of maximum will be a ramp up to maximum then a tailing off to minimum. During the cycle of the day with a good sized system this will be more than enough to give a days hot water for a domestic system in a sunny climate. There are many systems of this type on roofs in Spain. The rate either side of peak efficiency is not 1 tenth of the exposure, as the sun travels across the horizon the efficiency increases to maximum (peak) then slowly tails off. This can be improved some with a tracking device that moves the assembly into the peak throughout the day.

  • @juanitagaiff5170
    @juanitagaiff5170 ปีที่แล้ว

    Splendid idea! Love it

  • @rehanjawaid
    @rehanjawaid 3 ปีที่แล้ว

    Great 👍
    I really appreciate such a nice n practical efforts .In the greatest interest of mankind across the globe

    • @selvamthiagarajan8152
      @selvamthiagarajan8152 ปีที่แล้ว

      This can be implemented across regions where there is no access to electricity, I hope social conscious young men like you can provide this system at minimum cost or for free to people in need. Thank you for your interest.

  • @ashwinpatel7410
    @ashwinpatel7410 3 ปีที่แล้ว

    Just happened to watch this your project. Why don't you give dimensions and measurements of parabola, pipe, etc. It would help and make easier for DIYers and help to impoeve and may be get higher temperatures.

  • @tem_vremenem_v_kanade
    @tem_vremenem_v_kanade 2 ปีที่แล้ว

    Amazing, wish you would have made more videos about this subject

  • @gentlelove
    @gentlelove 6 ปีที่แล้ว

    How fast does it heat the water? Will one run out of hot water while showering? Shabbat shalom

    • @gentlelove
      @gentlelove 6 ปีที่แล้ว

      My question is talking about if this was hooked to running water. Shabbat shalom