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Thread: Calculating the solar panel angle

  1. #11
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    Warsaw (Poland)
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    Dear all,
    Thank you for lot of worm words and opinions about the app.
    This motivated me to spend another few moths (actually two) and prepare an action
    aimed in getting the best of our solar panels and to get closer to energetic independence based on renewables.

    I'm not sure if this post still fits to 'science and technology' subject of the forum
    since it is more technical and not related to general science and technology aspects.

    I decided to start an initiative for support of solar panels users in getting the highest efficiency of installed devices.

    Presently, with ScanTheSun it is possible to calculate the insolation of the place
    where a solar element will be installed taking into account various factors like shading by surrounding buildings or trees.

    The measured insolation is an amount of solar power that will incide on the panels.

    How much of that solar power will be transformed into usable energy
    is an another important aspect which depends on the type of the used solar element and its efficiency characteristics.

    In Spring 2015 an upgrade of ScanTheSun is planned for enabling on-site output power assessment of solar installations.
    The new functionality will be based on angular efficiency of a panel for direct irradiation.
    This way all users will have an occasion to choose a panel type/model that may best fit to specific on-site conditions.

    I'd like to invite you to take part in the initiative.
    The only thing to get it working is to upload efficiency data of solar panel you are interested in.

    For this purpose I've prepared a website:
    www.scanthesun.com/panels.php
    where all of you may upload technical solar elements data.

    I've also uploaded an introduction video on youtube:
    http://youtu.be/MeSimI3HL-A

    I have sent an invitation letter to take part in the action addressed to few hundreds of solar panel manufacturers.
    If you know some solar manufacturers or installers and would like to help saving the environment – please spread this information.

    I also would like to reach developing regions like Africa, Latin-America or Middle-East countries where solar energy may help people even more.
    Therefore I'm looking for websites of solar energy institutions for these regions to let them know about the free app.
    If you know some www addresses, please post them below.

    with best wishes for 2015
    Ernest
    droneBEE likes this.

  2. #12
    Senior Member
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    Mar 2013
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    your amazing Ernest, with every bump of this topic of yours there is only progress. Don't be to concern with the category of the topic, it's the info that's valuable.. I've downloaded the app and have been tune'n the neighbors panels, replanted some banana in a better spot, more sun, more banana. I've ordered a 7 x 10 inch frensel lens, always loved to play with matches....
    few other projects also in the que...
    wan'na start a group?

    droneBEE likes this.
    Everything Is Possible. Nothing Is True.
    (ψ = Σanψn)
    What do you know when the time is up and the door to the box is opened?
    It is not the consciousness of men that determines their existence, but their social existence that determines their consciousness.

  3. #13
    Senior Member
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    Jan 2014
    Location
    Northwest Wisconsin
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    2,059
    It really pays to observe any 'intended placement' of solar panels….for an entire year. We thought all was well but didn't account for several mature oak trees (leave less during winter) that are OVER 100 yards from the panels. That doesn't matter one bit during summer, but by mid November through February, we loose a lot of afternoon sun from those trees.

    We're moving them to a more suitable place this summer. The solar panels….not the trees...

    Trees were an issue w/ our placement decision and we don't like cutting 'living' ones, leaving a roof top placement out of the question as our home is surrounded….by trees. I didn't like the idea of climbing the roof to shovel off snow either. That left a 'ground placement' option for the panels in a meadow about 50 yards from the house.

    We're still hooked up to the grid, but can disconnect w/ the flip of a disconnect anytime we want. 9 panels reduced our bill over last 2 years by 70%…..making the choice to add 3 more when we move them an easy one.

    So I guess my question is; Is this something the app described above also takes into consideration? We don't own a smart phone (not really sure if I know what one is tbh) or a cell phone, but this seems like a very useful tool for DIY or professional installers.
    Last edited by droneBEE; 01-08-2015 at 09:38 AM.

  4. #14
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    You could find an old locked phone for almost nothing... you only need internet and wifi. apple i4 would work. Don't have to turn the phone on, just charge the battery and use the smart part through your internet connection..



    I just gave one away. Let's find another...
    Everything Is Possible. Nothing Is True.
    (ψ = Σanψn)
    What do you know when the time is up and the door to the box is opened?
    It is not the consciousness of men that determines their existence, but their social existence that determines their consciousness.

  5. #15
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    Mar 2013
    Posts
    940
    Received my 7 x 10 inch FRESNEL LENS today.. 6.49 for two delivered to the door... access abundance. To flexible to do much with, needs a frame in glass for support. Interesting to toy with, carefully.
    Now for the frame....







    Sill looking for a rear projector tv to make one of these..

    droneBEE likes this.
    Everything Is Possible. Nothing Is True.
    (ψ = Σanψn)
    What do you know when the time is up and the door to the box is opened?
    It is not the consciousness of men that determines their existence, but their social existence that determines their consciousness.

  6. #16
    New Member
    Join Date
    Jul 2014
    Location
    Warsaw (Poland)
    Posts
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    Apologies for not answering for several days. I got new lectures to prepare for my students and got busy with that.

    Regarding the cellphones required. I have taken the inefficiency of a free market economy (presented in Peters moves) to heart and constructed the app so that it is not required to have a modern smatrphone and no need to change it every (second) year. In order to achieve this I have implemented so called "supporting libraries" into the app at little expense of overall performance. In this way the app should work even on old devices (starting form Android 2.3) that are not expensive any more and still very good. It is good idea to look for a cheap second-hand phone to try the app. Remember, select one with compass and accelerometer sensors.

    droneBEE : the app takes into account direct irradiation and shading caused by objects you have described. It is one of the best ideas to compare two locations of the panels with the app. Then, factors that are not taken into account (weather statistics, diffuse light etc.) will vanish when a difference is calculated.

    RhythmAnarchy - although Im physicist I have not seen such large Fresnel lenses you shown on the picures. I wander if it is for water desalination?

    Last thing, I'm looking for someone able to make Spanish translation to prepare a Spanish version of the app. I can send a text resource file of the app (in English) - it is not large, around two pages. Could someone help?
    Ernest.

  7. #17
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    Jan 2014
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    Northwest Wisconsin
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    Thanks to all who submitted this important info. Guess I'm gonna have to get me a cell phone…..

  8. #18
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    Quote Originally Posted by Ernest Grodner View Post
    RhythmAnarchy - although Im physicist I have not seen such large Fresnel lenses you shown on the picures. I wander if it is for water desalination?

    Last thing, I'm looking for someone able to make Spanish translation to prepare a Spanish version of the app. I can send a text resource file of the app (in English) - it is not large, around two pages. Could someone help?
    Ernest.
    the big one........



    That came from some page in Japan, Not much info about app.





    nevertheless....


    SOLAR POWERED DESALINATION USING A LARGE FRESNEL LENS


    I can't do Spanish, only a bit of South Flo. Spanglish. I do have a capable friend that I can ask.

    I have another question, related to the nukes.

    What is the smallest scale Thorium reactor you could build..Maybe as big as a car battery, no?

    Could a micro scale Thorium Reactor be constructed to provided emery for 100,000, or even micro/micro 10,000.
    If you invest in the energy first, they will come and the economy/culture/city will evolve around that.


    If you could provided 100,000 with energy for 100 years for $500 mil. Close enough to free for me, I have an idea where to start..
    Everything Is Possible. Nothing Is True.
    (ψ = Σanψn)
    What do you know when the time is up and the door to the box is opened?
    It is not the consciousness of men that determines their existence, but their social existence that determines their consciousness.

  9. #19
    Senior Member
    Join Date
    Mar 2013
    Posts
    940
    Quote Originally Posted by Ernest Grodner View Post
    RhythmAnarchy - although Im physicist I have not seen such large Fresnel lenses you shown on the picures. I wander if it is for water desalination?

    Last thing, I'm looking for someone able to make Spanish translation to prepare a Spanish version of the app. I can send a text resource file of the app (in English) - it is not large, around two pages. Could someone help?
    Ernest.
    the big one........



    That came from some page in Japan, Not much info about app.





    nevertheless....


    SOLAR POWERED DESALINATION USING A LARGE FRESNEL LENS


    I can't do Spanish, only a bit of South Flo. Spanglish. I do have a capable friend that I can ask.

    I have another question, related to the nukes.

    What is the smallest scale Thorium reactor you could build..Maybe as big as a car battery, no?

    Could a micro scale Thorium Reactor be constructed to provided energy for 100,000, or even micro/micro 10,000.
    If you invest in the energy first, they will come and the economy/culture/city will evolve around that.


    If you could provided 100,000 with energy for 100 years for $500 mil. Close enough to free for me, I have an idea where to start..
    Everything Is Possible. Nothing Is True.
    (ψ = Σanψn)
    What do you know when the time is up and the door to the box is opened?
    It is not the consciousness of men that determines their existence, but their social existence that determines their consciousness.

  10. #20
    New Member
    Join Date
    Feb 2015
    Posts
    1

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