Dimenzování osvětlovacích soustav

Při provozu osvětlovací soustavy dochází k jejímu stárnutí, které se projevuje poklesem vyzařovaného světelného toku. U soustav veřejného osvětlení je tento pokles způsoben jednak poklesem světelného toku světelných zdrojů a jednak  zašpiněním svítidel. Vzhledem k tomu, že požadované světelně technické parametry na osvětlovaných komunikacích musí být zajištěny po celou dobu života, je třeba osvětlovací soustavy při jejím návrhu předimenzovat. Pokles světelného toku se u moderních sodíkových výbojek pohybuje do 10 %, u světelných diod je rozsah větší a pohybuje se v rozsahu od 10 % do 30 %.

Pokles světelného toku v důsledku zašpinění svítidel závisí na krytí svítidla (označení IP) a na znečištění ovzduší a intervalu čištění a pohybuje se v rozsahu od 10 % do 20 %. U moderních LED svítidel existuje funkce konstantního světelného
toku. Světelné diody jsou na začátku provozu napájeny nižším proudem; s narůstajícím počtem provozních hodin se tento proud postupně zvyšuje tak, aby byl výstupní světelný tok diod konstantní. Touto funkcí lze ušetřit přibližně 10 % elektrické energie – příkon osvětlovací soustavy při zahájení provozu soustavy bude nižší než na konci doby života. Nicméně při návrhu osvětlovací soustavy je třeba u LED svítidel s funkcí konstantního světelného toku počítat s poklesem světelného toku vlivem zašpinění svítidel.

Údržba

Vzhledem k tomu, že doba života světelných diod i předřadných zařízení je u kvalitních LED svítidel v porovnání s výbojkovými svítidly významně delší, lze očekávat i nižší náklady na údržbu LED svítidel. Nicméně i LED svítidla vyžadují svoji údržbu, do které patří například čištění svítidel nebo jejich revize. Poměrně často se objevující slovní spojení „bezúdržbová LED svítidla“ jsou především marketingovým sloganem, který neodpovídá reálné situaci.

Ekonomika

Při posuzování vhodnosti použití LED svítidel ve veřejném osvětlení je třeba vycházet z konkrétní situace. Pokud je cílem snížit energetickou náročnost osvětlovací soustavy prostou výměnou zastaralých výbojkových svítidel, pak při použití
moderních svítidel pro vysokotlaké sodíkové výbojky je návratnost v porovnání s kvalitními LED svítidly stále kratší, a to i v případech, kdy provozní náklady u LED svítidel jsou již podstatně nižší. Je to dáno výrazně vyšší cenou LED svítidel.
Pokud však obec získá investiční prostředky z dotačního titulu, je možné z pohledu obce „uměle“ zkrátit návratnost soustavy LED svítidel na akceptovatelnou úroveň. Čím je obnova osvětlovací soustavy komplexnější, tedy pokud zahrnuje
i výměnu stožárů, případně i kabeláže nebo je součástí revitalizace části městského prostoru, je rozdíl v investičních nákladech na soustavu s výbojkovými svítidly a LED svítidly výrazně menší. V takové situaci není při volbě osvětlovací  soustavy návratnost hlavním kritériem, ale uplatňují se i další hlediska, například estetická.

zdroj: SEVn, Středisko pro efektivní využívání energie


36 Responses to “Porovnáni soustav veřejného osvětleníi se sodíkovými výbojkami a LED diodami – Část jedenáctá”

  1. best CBD oil for pain Says:

    Post writing is also a fun, if you know after that you can write
    if not it is complicated to write.

  2. CBD gummies for pain Says:

    I am regular visitor, how are you everybody? This article posted at this
    web site is really nice.

  3. CBD gummies for sleep Says:

    Good day! I know this is kinda off topic but I’d figured I’d ask.
    Would you be interested in trading links or maybe guest authoring
    a blog article or vice-versa? My blog discusses a lot of the same subjects as yours and I feel we could
    greatly benefit from each other. If you’re interested feel free to
    shoot me an email. I look forward to hearing from you!
    Terrific blog by the way!

  4. cbd gummies Says:

    I am curious to find out what blog platform you are
    using? I’m experiencing some small security problems with my latest website and
    I would like to find something more safeguarded. Do you have any recommendations?

  5. best cbd oil for dogs Says:

    If you are going for best contents like myself, just
    pay a quick visit this site daily for the reason that it gives feature contents, thanks

  6. CBD for dogs Says:

    You really make it seem so easy with your presentation but I find this matter to be actually something that I think I would never understand.
    It seems too complex and very broad for me. I am looking forward for your next post, I’ll
    try to get the hang of it!

    My webpage … CBD for dogs

  7. cbd for dogs Says:

    Hey there! I’ve been reading your blog for a while now and
    finally got the bravery to go ahead and give you
    a shout out from New Caney Texas! Just wanted to say keep up the great job!

  8. best cbd gummies Says:

    This is really interesting, You are a very skilled blogger.
    I have joined your feed and look forward to seeking more of your
    fantastic post. Also, I’ve shared your website in my social networks!

  9. cbd sleep Says:

    Thanks on your marvelous posting! I truly enjoyed reading it,
    you’re a great author.I will ensure that I bookmark your blog and will eventually come back
    later in life. I want to encourage one to continue your great posts, have a nice afternoon!

  10. CBD oil Says:

    Simply want to say your article is as surprising. The clarity for your
    post is just great and that i can suppose you’re
    knowledgeable on this subject. Fine along with your permission allow me to take hold of your feed to stay
    updated with coming near near post. Thanks one million and please keep up the
    gratifying work.

  11. xnXYaRmwhf Says:

    wXtMepHUxAVkGaLI

  12. best CBD gummies Says:

    You are so awesome! I don’t believe I’ve truly read
    through something like that before. So good to discover another person with
    original thoughts on this subject. Seriously.. thanks for starting this up.

    This website is something that is required on the
    internet, someone with a little originality!

    Feel free to surf to my webpage best CBD gummies

  13. buy cbd gummies Says:

    Very good write-up. I definitely love this site. Stick with it!

    Here is my website … buy cbd gummies

  14. cbd gummies Says:

    I like the valuable information you provide in your articles.
    I’ll bookmark your weblog and check again here frequently.
    I’m quite certain I’ll learn lots of new stuff right here!
    Best of luck for the next!

    My web page :: cbd gummies

  15. cbd gummies Says:

    I really like your blog.. very nice colors & theme. Did you design this website yourself or
    did you hire someone to do it for you? Plz answer back as
    I’m looking to create my own blog and would like to know where u got this from.
    thanks a lot

    my blog; cbd gummies

  16. CBD gummies for sale Says:

    This is a topic that is near to my heart… Best wishes!
    Exactly where are your contact details though?

    my website CBD gummies for sale

  17. wFKVNPgQcSM Says:

    OAsWGuYdDpCtmQcL

  18. Ekonomia Says:

    Gdyby tak można było spojrzeć na świat bez żadnej innej ochrony, uczciwie i odważnie – pękłyby nam z pewnocią serducha

  19. delta 8 thc near me Says:

    It’s going to be finish of mine day, except before end I am reading this enormous article to increase
    my know-how.

    My web blog: delta 8 thc near me

  20. best delta 8 thc gummies Says:

    Hey would you mind sharing which blog platform you’re working with?
    I’m looking to start my own blog in the near future but I’m having a difficult
    time deciding between BlogEngine/Wordpress/B2evolution and
    Drupal. The reason I ask is because your layout seems different then most blogs and I’m looking for something unique.
    P.S Apologies for getting off-topic but I had to ask!

    My web page; best delta 8 thc gummies

  21. CBD oil for sale Says:

    I used to be recommended this web site through
    my cousin. I am not sure whether this publish is written via him as nobody
    else recognize such detailed about my trouble. You’re incredible!
    Thanks!

  22. delta-8-THC Says:

    Asking questions are actually good thing if you are not understanding something completely, but this article gives pleasant understanding yet.

    my page :: delta-8-THC

  23. cbd gummies Says:

    Have you ever considered publishing an ebook or guest authoring on other blogs?
    I have a blog based upon on the same ideas you discuss and would love to have you share
    some stories/information. I know my viewers would enjoy your
    work. If you are even remotely interested, feel free to send me an email.

    Have a look at my blog cbd gummies

  24. buy delta 8 thc online Says:

    Right now it seems like WordPress is the top blogging platform available right now.
    (from what I’ve read) Is that what you’re using on your
    blog?

    Here is my web-site :: buy delta 8 thc online

  25. CBD gummies for anxiety Says:

    I do not even know how I ended up here, but I thought this
    post was good. I don’t know who you are but certainly you are going to a famous blogger if you aren’t already 😉 Cheers!

    Also visit my website :: CBD gummies for anxiety

  26. delta 8 thc products Says:

    Hi! I’ve been following your blog for a while now and finally got the courage to go ahead and
    give you a shout out from Porter Tx! Just wanted to tell you keep up the excellent job!

    my page: delta 8 thc products

  27. buy delta 8 thc online Says:

    I am extremely impressed together with your writing skills
    as smartly as with the structure to your weblog. Is this a paid subject
    matter or did you modify it your self? Either way stay
    up the excellent high quality writing, it’s rare to see a nice weblog like this one today..

    my webpage buy delta 8 thc online

  28. delta 8 thc products Says:

    Hello There. I found your blog using msn. This
    is an extremely well written article. I will make sure to bookmark it and come back to read more of your useful information.
    Thanks for the post. I’ll certainly return.

    My web blog :: delta 8 thc products

  29. CBD gummies for sale Says:

    Right now it looks like Drupal is the preferred blogging platform out there right now.
    (from what I’ve read) Is that what you are using on your blog?

    Stop by my page … CBD gummies for sale

  30. best CBD Says:

    Hi there to all, how is everything, I think every one is getting more from this web site, and your views are nice
    designed for new users.

    Here is my page – best CBD

  31. cbd for sale Says:

    Hi, I log on to your new stuff on a regular basis. Your humoristic style is awesome,
    keep doing what you’re doing!

    My homepage: cbd for sale

  32. buy cbd gummies Says:

    It’s remarkable in support of me to have a web site, which is good in support of my knowledge.
    thanks admin

    Stop by my web blog – buy cbd gummies

  33. CBD gummies for sleep Says:

    I know this if off topic but I’m looking into starting my
    own blog and was wondering what all is required to get setup?
    I’m assuming having a blog like yours would cost a pretty penny?
    I’m not very web smart so I’m not 100% positive. Any tips or advice would be greatly appreciated.
    Thanks

    Take a look at my site … CBD gummies for sleep

  34. buy cbd Says:

    I feel this is one of the such a lot significant information for me.
    And i’m happy reading your article. But want to remark on few normal issues, The website style is
    wonderful, the articles is in point of fact great :
    D. Excellent process, cheers

    my homepage; buy cbd

  35. best CBD Says:

    Article writing is also a excitement, if you be acquainted with then you can write if
    not it is complex to write.

    Feel free to visit my page: best CBD

  36. best CBD Says:

    Whoa! This blog looks just like my old one! It’s on a entirely different subject but it has pretty much the same layout and
    design. Outstanding choice of colors!

    Have a look at my webpage :: best CBD

Leave a Reply