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My biggest disappointment about my 200KW (commercial scale) solar system.

Post in 'The Green Room' started by mbcijim, Jun 6, 2011.

  1. semipro

    semipro Minister of Fire

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    I'm probably not being clear... or maybe I am and I just don't understand.

    Why not use the PVs as water pre-heaters. If unheated water (in our case at 50 degrees F) was allowed to cool the PVs from the backside the heated water, though maybe not hot enough for use, could then go on to whatever you use as a water heater whether solar or otherwise.

    Edit: took the time to do a short search and found this and other links:
    http://news.discovery.com/tech/hybr...t-water-electricity-110504.html#view-comments

    Now I'm wondering how a do it yourselfer could do it.

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  2. woodchip

    woodchip Minister of Fire

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    That would be double the panels...... they are quite expensive here, even for diy projects like I'm thinking of......
  3. pring7

    pring7 Member

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    I have a similar facing roof and I figured the PV panels could be positioned like that to get early day light on one side and late on the other. I have a contractor coming today to look at it. Maybe he will have some recommendations that I can share with you. I figured that the panels will maybe last longer if they are not on the most optimal aspect.

    Does anyone know if this is plausible reasoning? Or, is the lifespan based on just age and not on the amount of sun time?

    Semipro; I understood your idea and it made good sense to me. I wonder if the little pvc lines that they run in radiant heating applications could be used for cooling the back of the PV panels? I bet that there are significant differences in performance in heat just based on design and the materials that the panels are made out of.
  4. pring7

    pring7 Member

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  5. DaveH9

    DaveH9 Member

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