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  • Can we separate light and heat from solar rays?

    Vignesh Viky

    Member

    Updated: Oct 26, 2024
    Views: 1.3K
    The efficiency of solar power output depends upon the temperature, right? So, if we can separate the heat from solar rays we could produce improved efficiency by allowing only light to fall on the panel. Is there a filter or any methods to do that?
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Replies

  • Kaustubh Katdare

    Administrator • Nov 28, 2017

    Cold mirrors actually separate large portion of heat from light. I believe you'd just be looking at offsetting the IR part of the spectrum; which mostly is heat.
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  • Vignesh Viky

    Member • Dec 3, 2017

    Thank you, Sir. By offsetting IR rays, does the intensity of light reduce? Does it reduce the solar power output? Also, can we use a thermoelectric generator to generate additional small power from the IR rays?
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  • Ramani Aswath

    Member • Dec 6, 2017

    Look at it this way: The total energy reaching the panel with the sun directly above the panel is a mixture of x% heat and (100 - x)% light. Even assuming a perfect heat blocking filter, still the light energy reaching the panel is (100 - x)% whether the filter is there or not.
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