Value for money?

Discussion in 'Solar Power' started by JJ, Mar 26, 2010.

  1. JJ

    JJ Funster

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    I have just been on the road with a fellow Funster who has one of those "sun seeking" solar panels (135watt?) gadgets.

    It is great fun... you hear it whirr up in to postion and it tracks the sun through the day and it folds itself up when the sun switches off at night.

    We checked its amps with my, less sophisticated, system of three 75/85 watt panels stuck down on the top of my roof and on each occasion (at different times of day) mine gave a reading higher than his.

    Not scientific I agree as the readouts came from different meters etc etc but given that his set up cost two and a half times more than mine I suspect I am getting more "Amps per Pound" than he is...

    JJ

    PS and I am not using any of that precious leccy on a sun seeking motor...:Wink:
     
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  2. JJ

    JJ Funster

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    Just a test...

    Just about two years ago I posted this thread on Fun reporting the difference between the cost of an fancy automatic sun seeking solar panel thingy and three panels fitted flat on a roof...

    408 views and NO replies... :Sad:

    I wonder what happens if I "re-post" the thread now in 2012... :Wink:



    JJ :Cool:
     
    Last edited: Feb 16, 2012
  3. CHRI$

    CHRI$ Funster

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    so you got 3 75 watt panels =225 watt,and he got 1 135 watt panel=135 watt and you are getting more power,hmmm i wonder why??
     
  4. JJ

    JJ Funster

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    Once again I failed to get my point across successfully Chris... sorry...

    My point was his system COST him two and a half times MORE than mine...

    (Hence the title of the thread... "Value for Money" and not "Which System Creates The Most Amps"?)

    JJ :Cool:


    Now edited it to make it clearer (I hope)...
     
    Last edited: Feb 16, 2012
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  5. Gromett

    Gromett Funster

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    I had a huge solar thread on Facts about 5 years ago. I had two 120Watt solar panels and a couple of people were on about the trackers. I gave up on the debate after a bit as they didn't seem to get it. I had spent £900 on my system the trackers back then were only 80 watt and about £3K if memory serves. I was saying I was getting more power over the whole day they were saying but they get more in the morning and evening. I said but I get more power over the whole day they said they get more in the morning and evening................. :Doh::Doh::Doh::shout::shout::shout::shout::shout::shout:

    80Watt panels are now £110. 3 of those and it is my feeling that you will get more power over the whole day except in the deepest part of winter......

    The other thing that amuses me is when people buy a solar panel and get it installed right up against a satellite dish or aircon unit making it useless :Eek!:

    I am totally with you on this one JJ.....
     
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  6. scotjimland

    scotjimland Funster Life Member

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    Totally agree..... JJ ,:thumb:

    Provided you have enough roof real estate for the extra panels ..... :Wink:

    must have missed your post first time around ..
     
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  7. CHRI$

    CHRI$ Funster

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    i see your point jj:thumb:
     
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  8. JJ

    JJ Funster

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    Good point about space, Jim...

    My mate had a 36 foot+ RV and I was in the Wagon (Iveco Daily LWB)...

    JJ
     
  9. ShiftZZ

    ShiftZZ Funster Life Member

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    I suppose you should factor in the weight issue, the gubbins must weigh a fair bit and therefore have an effect on your mpg, there must be also an optimal power to weight issue, its ok having 1,200w of solar if the mpg of your van drops to 6 mpg.

    I suspect it would take a complex formula to work it all out, mileage, weight, cost of blah blah...
     
  10. scotjimland

    scotjimland Funster Life Member

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    Thin flexible solar panels are they way forward ..

    lightweight, waterproof, no added wind resistance .. can be stuck directly to the roof, will flex around curves, can be walked on .. and discrete ..

    once the price falls we will wonder why we ever used big heavy glass panels..
     
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  11. tofo

    tofo Funster

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    As you say a little pricey at the moment

    http://www.google.co.uk/search?q=fl....,cf.osb&fp=939766c1a2f513f2&biw=1024&bih=644
     
  12. jhorsf

    jhorsf Read Only Funster

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    I think the only thing that this proves JJ is
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    you have a mate:Rofl1:
    only kidding I know you have several:Eeek:
     
  13. GJH

    GJH Funster Life Member

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    The price of flexible panels is likely to drop through the floor any day now - cos I've just had a glass one fitted :Laughing:
     
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  14. scotjimland

    scotjimland Funster Life Member

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    so long as it don't drop through the roof ... :Eeek:
     
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  15. Reallyretired

    Reallyretired Funster

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    A tracker will get more when the sun is low, especially morning and evening but as JJ says its not Amps at any particular time of day that matters, its how many amp-hours per day (after all you are storing it) and the fixed panels are better value for money.

    Flexible panels have many good points but will lose efficiency due to overheating (that's why you leave an air gap under normal panels), and are probably not transferable once stuck down.
     
  16. JJ

    JJ Funster

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    I have to hire them by the week though...

    (I nearly said I had to "rent" them but then I realised what fun Funsters would have with that phrasing...:Wink:)

    JJ :Cool:
     
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  17. jhorsf

    jhorsf Read Only Funster

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    I will be your mate JJ no[HI] charge[/HI]:Rofl1:
     
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  18. harryoxford2

    harryoxford2 Read Only Funster

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    wait a minute wait a minute when this pans into the right direction it gathers loads of amps.....however the motor that drives it there needs a 3 hour charge before it works.....ill just move me van round in the suns arch and youll see just how good they are......ermm can I have a jump start please
     
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