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    #31
    thanks for the links..So all the systems you install are fixed in place systems..So during the winter months the rate of transfer or absorption is considerably lower than the already low amounts quoted..or am I missing some thing here..yet it gives me more ideas to ponder..so in my area our sunlight hours vary around 4 minutes a day both up and down..so you would have to make a program that would associate that to the angle of the sun and vary the angle of the collectors..the collector plate would have to be strong enough to handle extreme cold and extreme hot..so you would need to include some sort of GPS system in the controls..just so you could maintain a 30% effeiciency or is the efficiency rating figured on a fixed plate install..

    So is there prints available to build your own collectors..or how much does this stuff cost assembled..
    [COLOR="DarkRed"]Life is temporary, heaven is forever. live life like it is your only chance to make a difference..[/COLOR]

    [COLOR="Red"]to do nothing is the surest way to achieve nothing..[/COLOR]

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      #32
      Cschmid:

      All this info is available somewhere free online, but
      if you want a how-to manual, one is called "Photovoltaics
      Design and Installation Manual", from Solar Energy
      International. It also has tables addressing one
      of your issues about the tracker. I don't know where
      you are in MN, but e.g. in Saint Cloud you will get
      an average of 4.6 KWh/m2 / Day with a static array
      tilted south at latitute (you will get a fraction of this
      in power). A single axis tracker will bring this up to
      5.9 kWH/m2 / day, with the biggest gain in the summer
      months. A dual-axis tracker would bring this up to 6.1,
      but the big gain over a single-axis would come in the
      winter months.

      Solar installations are incredibly site specific, and it
      is impossible describe all the issues here.

      This is a a very interesting area, so good luck!
      Last edited by rexowner; 03-20-08, 01:09 PM.

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        #33
        Originally posted by rexowner
        Cschmid:

        All this info is available somewhere free online, but
        if you want a how-to manual, one is called "Photovoltaics
        Design and Installation Manual", from Solar Energy
        International. It also has tables addressing one
        of your issues about the tracker. I don't know where
        you are in MN, but e.g. in Saint Cloud you will get
        an average of 4.6 KWh/m2 / Day with a static array
        tilted south at latitute (you will get a fraction of this
        in power). A single axis tracker will bring this up to
        5.9 kWH/m2 / day, with the biggest gain in the summer months. A dual-axis tracker would bring this up to 6.1,
        but the big gain over a single-axis would come in the
        winter months.

        Solar installations are incredibly site specific, and it
        is impossible all the issues here.

        This is a a very interesting area, so good luck!
        thanks for the info..
        Last edited by cschmid; 03-20-08, 12:28 PM.
        [COLOR="DarkRed"]Life is temporary, heaven is forever. live life like it is your only chance to make a difference..[/COLOR]

        [COLOR="Red"]to do nothing is the surest way to achieve nothing..[/COLOR]

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