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Thread: Solar pool heater. Should I cover?

  1. #16
    In the trades Dana's Avatar
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    You want the difference in temperature between the water coming into the collector and what's flowing out to be 20F or less (eg: 68F pool water, 88F water coming out of the collector), but if the delta is much less than 10F you're probably chewing up more pumping power than it's worth. It depends on the absolute efficiency of the pump.

  2. #17
    DIY Senior Member CanOfWorms's Avatar
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    Quote Originally Posted by Dana View Post
    You want the difference in temperature between the water coming into the collector and what's flowing out to be 20F or less (eg: 68F pool water, 88F water coming out of the collector), but if the delta is much less than 10F you're probably chewing up more pumping power than it's worth. It depends on the absolute efficiency of the pump.
    Last year the system I had worked. And though I did not measure it, it was acceptable.
    But my wife wants it really hot. Like over 80.


    I have the black sprinkler pipe hooked up to black rubber garden hose with fittings.

    The pump had a reducer and fed into that.

    Last year I was always screwing around with it because of one thing or another.

    What kind of pump to I need to work with my hose diameters?

  3. #18
    DIY scratch-pad engineer leejosepho's Avatar
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    Quote Originally Posted by CanOfWorms View Post
    Last year the system I had worked. And though I did not measure it, it was acceptable.
    But my wife wants it really hot. Like over 80.
    90 is comfortable for me, and here is what I have done:

    Name:  solarpoolwarmer.jpg
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    That hose was fairly warm before I began sending the water through it, and now it is much cooler. Beginning water temperature was 84, and I suspect I will have 90 in a couple of hours.

    Quote Originally Posted by CanOfWorms View Post
    What kind of pump to I need to work with my hose diameters?
    I am using an inexpensive pump and filter combo, but you might look for a TACO circulator:
    http://www.taco-hvac.com/en/products...nt_category=18
    Last edited by leejosepho; 06-11-2013 at 09:47 AM.
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