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Thread: Heating a pool

  1. #1
    GSP Mad Munsey's Avatar
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    Heating a pool

    Is it possible to heat a pool , with no pump just heat convection ? Name:  image.jpeg
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  2. #2
    LOC
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    yep, all you need is to create a siphon flow. wasn't this common in the old days? a mate had a similar set up in his pool as a kid
    does anyone know if the outflow back into the pool needs to drop from air down into the water to create the siphon suction? or can it the end of the hose be submerged?
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  3. #3
    Member northdude's Avatar
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    It won't work the water won't stay in the pool that way

  4. #4
    Almost literate. veitnamcam's Avatar
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    Should work but you would have to run the squiggles on the roof the other way so that as it heats it is riseing not going up then down then up as in picture.
    Also would need to get all air out by I guess running a pump to prime but once filled and providing it doesnt leak or get an end out of the water it should work fine.
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  5. #5
    P38
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    Yep

    It will work and as @veitnamcam said turn the runs horizontal not vertical, hot water rises.

    Also put a ball valve in the line so you can switch it off otherwise you could end up with a very warm pool.

    Let us know how you get on.

    Cheers
    Pete
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  7. #7
    Member Marty Henry's Avatar
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    The solar coil needs to be below the water level in the pool with the inlet cold below the outlet hot or the thermal syphon effect wont work.
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  9. #9
    Almost literate. veitnamcam's Avatar
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    Quote Originally Posted by Marty Henry View Post
    The solar coil needs to be below the water level in the pool with the inlet cold below the outlet hot or the thermal syphon effect wont work.
    The coil can be positioned at any height relative to the pool but if above it needs to be primed.

    Which could be done with the garden hose easily enough by stuffing it in the bottom (cold) inlet and turning on full bore until bubbles stop coming out the top (warm) hose.
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  10. #10
    GSP Mad Munsey's Avatar
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    Thanks Im off to Bunnings , @vietnamcam @P38 . If I put say a y junction at the cold end . would that help to prime the system ? Connect hose ,maybe block other part of y until flowing ?
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  11. #11
    Almost literate. veitnamcam's Avatar
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    Quote Originally Posted by Munsey View Post
    Thanks Im off to Bunnings , @vietnamcam @P38 . If I put say a y junction at the cold end . would that help to prime the system ? Connect hose ,maybe block other part of y until flowing ?
    Yep that would work well.
    Id put the top hose in at 1/2 to 2/3 of the way up the water level, you dont want it uncovering when you do a bomb etc and getting air in or it will stop working.
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  12. #12
    GSP Mad Munsey's Avatar
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    Quote Originally Posted by Marty Henry View Post
    The solar coil needs to be below the water level in the pool with the inlet cold below the outlet hot or the thermal syphon effect wont work.
    As in a wet back system log burner to HW cylinder ? Im aware this is the complete opposite but can't see why Cams system wont work ?
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  13. #13
    P38
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    Munsey

    You can prime the system with the pipe on the ground, once the line is full plug it with a wooden or plastic plug, put it in place then remove the plugs once both ends are in the pool.

    Cheers
    Pete
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  14. #14
    Gold member Pointer's Avatar
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    Make sure you put a valve or tap at the highest point in the system so you can bleed it while in use without having to refill it. A place I used to hunt on had a similar hot water system,filling it from empty was a dream once that tap was put in to bleed air out of
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    You'll need someone with a lot of suck to get it going!
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