do it yourself solar heater -SWIMMING POOL SOLAR HEATER

September 17, 2014 – 9:22 am

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  1. 25 Responses to “do it yourself solar heater -SWIMMING POOL SOLAR HEATER”

  2. The hotter the water gets in the pipe the less efficiently it absorbs heat
    - if you never switched the pump on the water filled pipe would quickly
    reach an equilibrium temperature where it is radiating the same amount of
    heat as it is absorbing. i.e zero net heat transfer. Thus you will get
    the most efficient heat transfer to your pool by letting the system run
    continuously rather than turning it on and off – as soon as that pipe gets
    noticeably hot, it’s not absorbing heat efficiently. And the faster you can
    push water through the pipe, the more efficient the heat transfer and the
    faster the pool will get up to it’s maximum possible temperature in
    relation to the solar flux. The corollary is as soon as the sun goes in,
    you have to switch the pump off, or the system flips and starts to radiate
    away the heat from the pool rather than absorb heat from the sun. Some sort
    of photoelectric control switchwould be ideal.

    By davidenespana on Sep 17, 2014

  3. No need to turn in off each time…..
    Just let it run… at the end you will have the same amount of heat in your
    pool.

    For example : when you turn it off each time you maybe get 5gallon/hour of
    very hot water.

    If you let it run you will maybe have 3-4x that much water but not so hot.

    At the end you will have the exact same result ;-) 

    By BelgianEvo on Sep 17, 2014

  4. why is your pool full of bubbles did you pee in your pool?

    By MrTjp420 on Sep 17, 2014

  5. Are you sure it’s turned on? I can’t hear a thing

    By truthoutmedia on Sep 17, 2014

  6. Why don’t you use a thermosiphon? Your pool is above ground.

    By lberhold on Sep 17, 2014

  7. Hook a thermostat with a sensing bulb into your circuit.You should be able
    to find one of these at a commercial plumbing store. Connect thermocouple (
    sensing bulb) next to your hose. As soon as the water in the hose is hot
    enough the pump will come on, as soon as the water passing by that point
    falls below the set point it will stop. Voila you have an Automatic heat
    dump system that only works when the water is hot enough.

    By Ron Messer on Sep 17, 2014

  8. now all u need is a pool filter. man, that is one filthy pool dude.

    By kilrassclown on Sep 17, 2014

  9. What about using a pump powered with a solar panel? having a pump running
    all the time is gonna use electricity….can it too be setup to work from
    the sun? That way the pump only runs on bright days, and switched off at
    night automatically.

    By Paul Nevin on Sep 17, 2014

  10. This would only be good for sunny summer days yeah? why would someone want
    a hot swimming pool in the summer, I thought pool in summer was for cooling
    off. 

    By pierrelarouge on Sep 17, 2014

  11. Just a thought – Heat rises; draw cold water in from the bottom of the pool
    put the other end in the top of the pool; let the sun heat it in the pipe
    and the warmer water should rise and run out of the top and pull cooler
    water in at the bottom. No motor just thermal movement.

    By Grenville Astill on Sep 17, 2014

  12. The color green absorbs the best energy That is why all the plants are
    green. Green is the color of life Black is the color of death

    By Mindy McGlone on Sep 17, 2014

  13. matt black is better than gloss black for absorbing sun energy

    By koorosh palang on Sep 17, 2014

  14. I just put a spigot on my return at the pool pump which diverts some of
    the water to the black hose and back into the pool. No need for the extra
    pump. I can control the speed of the water flow by how far I open the
    spigot and there is no need to shut it on and off. On very hot days, I
    have to shut it off or the pool gets too warm, like 95 degrees. I use a
    solar cover at night so I don’t lose the heat. I don’t attach my hose to
    anything, I just lay the hose on the ground in a circle. It makes it
    easier to store it in sections for the winter.

    By 150JMB on Sep 17, 2014

  15. Use a water hose splitter, adjust the flow so most returns to the pool but
    %15 goes through the glass covered 400′ hose…just a thought.

    By Thomas Coon on Sep 17, 2014

  16. The black hoses do not absorb heat. If they did, you’d get no heated water
    into your pool. The black hoses absorb all wavelengths of light from the
    sun, and in turn, they heat up, and then transfer that heat TO the
    circulating water. But overall, this is an excellent idea I may pursue for
    my pool. Idea: If you were to construct a box with a window (facing the
    sun) to hold the black hoses (and prob double the amount of black hose, and
    insulate it), the box would become VERY HOT inside and hold heat a lot
    longer. You are taking cold pool water and circulating it directly thru
    your system, which removes a LOT of heat from your heater. If you were to
    say, build a CLOSED system, in which the water is heated but only
    circulated to an exchanger where it heats the pool water, the water will
    stay HOT, and the release heat to the pool. Just an idea.

    By QuantumRift on Sep 17, 2014

  17. A simple limit thermostat, close on rise, would shut the pump off when the
    temperature at the output drops. I reckon you wouldn’t want the thermostat
    sensor at the output but actually in the receiver, somewhere near the end
    of the run. When the water heats up again, the thermostat switch closes
    and the pump fires up again until cold water gets to the sensor. Lather,
    rinse, repeat automatically, no hassle for you.

    However, the other statements regarding letting the water continue to run
    are correct. In fact, the lower the delta-T (temperature change in the
    collector), the more efficient it is. It won’t feel like the collector is
    doing much, but in fact it will be gathering more heat and getting it into
    the pool, where you don’t actually want HOT water – just warm. So if the
    water pouring out of the hose feels merely tepid, when you spread that
    slightly warm water over your entire body it actually feels pretty good,
    and that’s the goal.

    By elhigh on Sep 17, 2014

  18. just use a small aquarium pump. im in australia so the sun is quite
    intense. we have made a similar setup. when the water gets back to the pool
    its literally steaming. it gets to a point where the pump can be turned off
    and a heat vacuum occurs. 

    By SuperRedsting on Sep 17, 2014

  19. Poor roofing tar all over that !!

    By normellow on Sep 17, 2014

  20. Maybe you could sit the hose on aluminum foil or something like that?Would
    the heat transfer from the foil to the hose work? just a thought

    By micah68ss on Sep 17, 2014

  21. No, the high flow will always add more heat to the pool – less entropy.

    By Kevin Jackson on Sep 17, 2014

  22. wouldn’t it transfer the same amount of heat if just left running….

    By brokenbeforetime on Sep 17, 2014

  23. You risk Primary Amoebic Meningoencephalitis

    By ICEGTN on Sep 17, 2014

  24. Will the 400 feet of water in the hose heat up enough in that time when it
    comes out of a cold pool? Say, I want a 70 degree pool to be 80 degrees.

    By pythonflying on Sep 17, 2014

  25. put glass over it , think it will heat faster

    By TTHRftw on Sep 17, 2014

  26. why are you so pessimestic? This guy has given us an idea that will save us
    money on heating our pools so we can enjoy them more. Anyone that is not
    stupid would know not to run an electric pump while in the pool so please,
    If you can’t offer constructive ideas. shut up !!!! and Thanks
    torchbrothers ………………

    By sue merritt on Sep 17, 2014

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