Best heat absorber/ releaser

  1. Hi all,
    I am new to the forums and I was wondering if anyone could help me with a dilemma.

    I recently installed an inground pool and I did buy a gas heater. But I really dont wat $600 gas bills. so I am going to try to build a solar water heater.

    I was thinking of a basic design, a box with coiled (?) to run water through.

    my question to you experts is, what material to use I know copper is good at absorbsion of heat and relese of heat, but is there something better??/

    any advice would be appreciated.
  2. jcsd
  3. marcusl

    marcusl 2,104
    Science Advisor
    Gold Member

    Copper is used because it's a good conductor, not because it's a good absorber (it isn't!). Black paint is a good absorber.

    Based on your questions, I suggest you follow plans for this project. There are tons of plans for free and for sale on the web. Start searching "build your own solar pool heater", for instance.
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