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Angle of PV Panels

Discussion in 'Photovoltaics' started by RST Engineering \(jw\), Feb 17, 2006.

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  1. I realize that it is a continually shifting target, but how do I calculate
    the most efficient angle of elevation as a function of latitude for summer
    and winter positions on a two-position mounting rack.

  2. George Ghio

    George Ghio Guest

    The best specialist tools you can get are a piece of chewing gum(pre
    chewed) and a matchbox. These are used as follows.

    Mid Summer;

    1. At noon place chewing gum on one side of panel frame.
    2. Place one end of matchbox on chewing gum.
    3. Adjust angle until no shadow appears above or below the matchbox.
    4. Panels are now square on to the sun.
    5. Mark frame for future reference.

    Repeat Mid Winter.
  3. Steve Spence

    Steve Spence Guest

    Solar noon is when you want to make your left/right adjustments. up/down
    (angle) has everything to do with latitude and time of year. You don't
    want early morning late afternoon sun as there is less power in that
    light. It travels further through the atmosphere. go for direct solar
    noon, and solar south.
  4. And it is a measurement, not a calculation.

    That was PRECISELY what I needed. Thanks.

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