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  • jyonkov 4:02 pm on November 3, 2010 Permalink | Reply
    Tags: , , , Green Tech, solar   

    Summer in Japan 

    Its been a while since I’ve posted anything here…

    Google buzz and reader are to way to share the news but i guess to create news it would not hurt to use a good old blog post.

    I’ve been in Japan for about 5 months now. I’ve been studying Japanese in a community center near by. Its quite fun, I can read and write hiragana a little, でもまだじょうずじゃありません.

    I’m enjoying been in Japan quite a bit. I’m staying kind of in the country side near Tokyo/Yokohama. There are many old houses and farms.

    Its not uncommon to buy vegetables directly from small producers who leave them unattended with the price next to them. The climate here is tropical so its very hot and humid and it rains a lot.

    Sometimes its so hot i have to take 3-4 showers a day. Thats one of the reasons I came up with the “idea” to collect rain water and use the sun to purify it (trough distillation) so i came up with a small prototype which i call the water panel :) The cool thing about it is that it can keep the water evenly distributed even when it is tilted at an angle.

    Japan is quite up there with  green energy appliances which they usually label ECO. I’ve uploaded couple of pictures of my prototype, a Solar water heater and a roof mounted Sollar PV pannels. I have not seen roof mounted Solar personal water purification system in Japan so far.

     
  • nkolev 7:26 pm on February 24, 2010 Permalink | Reply
    Tags: , Green Tech   

    Bloom Energy seems cool. The article at Mashable gives some more details.

     
    • jyonkov 2:34 pm on February 25, 2010 Permalink | Reply

      Yes its really cool, i was just reading it on MIT Tech Review… I wonder if concentrated solar power can be used to produce the heat necessary for operation.

  • jyonkov 12:31 pm on December 14, 2009 Permalink | Reply
    Tags: , , Green Tech, ,   

    Solar in Las Vegas 

    I was in Las Vegas for a while and decided to upload some pictures of my home renovation solar experiments. This is a 500 feet black hose that is connected to an old water heater. The hot water should circulate using D5 Solar circulation pump. My goal eventually is to concentrate solar energy with computer controlled mirrors or by pointing an old C-Band satellite towards the sun.

    It would be cool if one can find funding for organizing green development camps. For example a group of enthusiasts can get together once a year and dedicate 7 days to get their ideas into a working prototype. A demo session at the end should show the final  result. The funding is necessary for materials, travel and accommodation. Videos and pictures can be published so that the joy is shared :)

     
    • Neven Boyanov 9:21 pm on December 14, 2009 Permalink | Reply

      I think that it will be more efficient if the sun reaches the water directly, through a glass or transparent pipes. Rubber is not very good temperature conductor, it is actually very good isolator. Hristo (from Kozarevec), who has some experience, is using combination of sun heated water with gas burner or just regular wood-fire heater.

      • jyonkov 10:34 pm on December 30, 2009 Permalink | Reply

        It would be cool if Hristo can share his prototypes on the blog… Unfortunately we are blocked by the language barrier and until we get this blog to be multilingual. Its quite challenging to get oneself to write in its own language already… About the solar prototypes, i think CSP http://en.wikipedia.org/wiki/Concentrating_solar_power looks very promising.

    • Neven Boyanov 9:27 pm on December 14, 2009 Permalink | Reply

      I like the idea about the camps!
      It will be really cool. Somewhere in the mountins or even in Hroisto’s backyard, about noon everyone is already drunk and generates hundreds of new ideas. :D

      PS: Don’t bring any females though, they will spoil it all.
      PPS: So, may be in the cold mountins is better idea, women don’t like to go there anyways, so no need to convince them. ;)

      • jyonkov 10:44 pm on December 30, 2009 Permalink | Reply

        I’m glad you like the camps… I think Bertrand is also exited about it. We may even be able to raise funds for it, assuming there are projects themes, goals and people willing to share their thoughts ahead of time in order to do some preparations. Lets go for it.

  • jyonkov 10:50 pm on November 4, 2009 Permalink | Reply
    Tags: biology, , Green Tech,   

    Algae take over beaches in northern France

    I wonder if any company will be doing a partnership with the French government to use the algae as fuel. My understanding is that one can press algae and produce oil pretty much the way olive oil is produced. I can picture an old water powered mill pressing algae instead of grinding wheat and producing algae oil and fertilizer. Ahh, i guess it might not be as easy as one may think.

     
    • Nikolay 9:59 am on November 8, 2009 Permalink | Reply

      Algae is an underused resource… like many others. The oil mafia has probably invested billions to sabotage alternative fuels, but it seems that that’s behind us already.

  • nkolev 11:45 am on October 27, 2009 Permalink | Reply
    Tags: Green Tech, Transportation   

    Today I read an interesting article about a new line of electric buses that uses ultracapacitors. These buses are now operational in Shanghai. It’s a beautiful and simple idea that results in energy saving and no need to use wires.

     
  • nkolev 8:07 pm on October 4, 2009 Permalink | Reply
    Tags: , Green Tech,   

    Here’s an interesting product from the Netherlands – a LED-based light bulb that consumes 6 watts of power and can replace a 60-watt bulb and has a life of 25 years. As the founder of the company says (who’s a grandchild of Philips original founder), this can have a much bigger effect on power saving than solar panels and other methods to conserve. You can read the CNET aritcle here.

     
    • Apostol Apostolov 8:58 pm on October 4, 2009 Permalink | Reply

      Sounds like an improvement on the recently announced Panasonic EVERLED technology. It’s all about the price. If the Netherland company can offer their tech at under 40$ a bulb Panasonic asks for their bukbs, they will save a viable market. Consumers may care about energy savings but there’s a breaking point at which they don’t really care about tech improvement as for price dropping.

      • Nikolay 9:05 pm on October 4, 2009 Permalink | Reply

        True. I wouldn’t want to cough up a lump sum and exchange all my bulbs at home, but I can do one by one and within one year, let’s say.

        There’s something that is being overlooked in regards to fluorescent bulb – they radiate UV and increase getting skin cancer even being at home and can also lead to migraines. I’m not sure if LEDs has similar properties, but I heard that in UK mass switch to fluorescent lights is being put on hold.

  • jyonkov 11:24 pm on September 3, 2009 Permalink | Reply
    Tags: , , Green Tech   

    A “new” way to store green energy 

    If you’re planing to produce electricity off-the-grid you may need to think about a way to store electricity until the time you actually need it. The first thing that comes to mind is batteries. Unfortunately deep cycle batteries are expensive and like many other batteries  their power reduces with time.  I think that flywheels have a great potential of becoming the short-time (6h-24h)  energy storage devices of future.  I’m quite exited about building a prototype based on the Top toy and “Bedini motor”.

    Here are several companies that manufacture UPS using flywheels:
    http://www.pentadyne.com
    http://www.activepower.com

    http://www.beaconpower.com/index.asp

     
    • Nikolay 12:45 am on September 13, 2009 Permalink | Reply

      Using flywheels is a really interesting approach!

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