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== Solar Water heating ==
 * Two main types, flat-pannel or vacuum tube, both can be gravity or forced.
      * Comparison between the two [[attachment:ITS-SOLAR-flat-plate-vs-evacuated-tube1.pdf]]
      * Explanation of how the vacuum tube works [[attachment:ITS-SOLAR-how-does-an-ethp-solar-collector-work4.pdf]]

eco/sunpower (last edited 2021-03-18 18:10:37 by PieterSmit)