solar panels directly faces sun so they can receive more energy than when it is at horizontal. But in cloudy weather, the solar panels receieve more energy when it is at horizotal. why is it so?
2007-02-14 01:20:07 · 3 answers · asked by ?ټ֠? size= 1 in Science & Mathematics ➔ Physics
the clouds scatter the sunlight evenly throughout the sky, meaning that if you point it up horizontally it sees more sky thus more light. during a sunny day, the light moslty comes from teh sun so pointing it at the sun would make it see more light.
2007-02-14 01:27:50 · answer #1 · answered by mrzwink 7 · 1⤊ 0⤋
Maximizing the light energy striking the surface of a flat object is usually accomplished when the perpendicular to the surface points at the center of the source of light. In the case of a cloudy day the entire sky is emitting light relatively equally. Therefore the perpendicular should be pointing to the center of the sky visible from the location of the solar panel. As long as there are no trees, cliffs or buildings that means the panel should be parallel to the surface of the earth.
2007-02-14 01:28:31 · answer #2 · answered by anonimous 6 · 1⤊ 0⤋
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2017-03-31 23:05:11 · answer #3 · answered by ? 3 · 0⤊ 0⤋