1. Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
    Dismiss Notice

Solar/Wind/Current Boats

Discussion in 'Alternative Energy' started by dknguyen, Jul 18, 2006.

  1. dknguyen

    dknguyen Well-Known Member

    Joined:
    May 6, 2006
    Messages:
    6,761
    Likes:
    72
    Has anyone see heard of that boat called the Orcell that uses solar, wind, and water current generators in addition to diesel to run?

    How effective is it to take a tiny pager-type motor and stick some kind of fan blades or propeller on it to get it to generate power from the wind (or water for that matter)? In another thread in another section someone said that it wouldn't work very well because the motor is designed to be efficient at around 3000RPM.

    The idea is to charge up a bank of supercapacitors to power electronics and the ocassional sail winch servo or rudder every now and then (miniature model-sized boat). It'd be nice to be able to augment the solar cells with wind power or water current power, with wind sails doing most of the movement work.
     
    Last edited: Jul 18, 2006
  2. audioguru

    audioguru Well-Known Member Most Helpful Member

    Joined:
    Mar 16, 2004
    Messages:
    32,589
    Likes:
    951
    Location:
    Canada, of course!
    ONLINE
    Like the guy who used a computer fan as a generator for his LED array headlamp on his bicycle. It lighted a single LED dimmly when he pedalled as fast as he could go, and didn't charge his battery.

    For your propeller generator to do anything, it will have wind resistance so will act like a sail.
     
  3. oldtimer

    oldtimer New Member

    Joined:
    Jul 3, 2006
    Messages:
    94
    Likes:
    0
    Location:
    Florida (english ex pat)
    I had a 30 foot sailing boat with a keel instead of lead I installed lead acid batteries and two 100 watt solar panels on the coach roof. I scrounged a golf cart motor 3 H.P and I never bought any fuel after 11 years in the Med. I also had two wind generators which are easy to build.
     
  4. dave

    Dave New Member

    Joined:
    Jan 12, 1997
    Messages:
    -
    Likes:
    0


     
  5. bristol188

    bristol188 New Member

    Joined:
    Aug 12, 2006
    Messages:
    50
    Likes:
    0
    Location:
    Karuah Port Stephens NSW Aust.

    That's interesting. Are you a saying that you lowerd the batteries down into
    the keel cavity with webing staps or sim. And they (the bat.s) would have to
    be sealed gelcell wouldn't they?


    Rog.
     
  6. oldtimer

    oldtimer New Member

    Joined:
    Jul 3, 2006
    Messages:
    94
    Likes:
    0
    Location:
    Florida (english ex pat)
    They were sealed gell electrolite batteries, I built the keel seperately from the boat then bolted it on. The top of the battery case was sealed to prevent gasses from getting into the cabin. Why carry lead around when it can be put to good use.
     
  7. philba

    philba New Member

    Joined:
    Mar 12, 2006
    Messages:
    1,886
    Likes:
    8
    Location:
    Seattle
    how do you replace the batteries when they, inevitibly, go bad?
     
  8. Nigel Goodwin

    Nigel Goodwin Super Moderator Most Helpful Member

    Joined:
    Nov 17, 2003
    Messages:
    39,331
    Likes:
    653
    Location:
    Derbyshire, UK
    ONLINE
    I would have thought it's fairly obvious?, you remove the keel to get at them!.
     
  9. philba

    philba New Member

    Joined:
    Mar 12, 2006
    Messages:
    1,886
    Likes:
    8
    Location:
    Seattle
    oh, that sounds pretty easy...
     
  10. Nigel Goodwin

    Nigel Goodwin Super Moderator Most Helpful Member

    Joined:
    Nov 17, 2003
    Messages:
    39,331
    Likes:
    653
    Location:
    Derbyshire, UK
    ONLINE
    Nobody said it would be easy? :D
     
  11. philba

    philba New Member

    Joined:
    Mar 12, 2006
    Messages:
    1,886
    Likes:
    8
    Location:
    Seattle
    I guess rhetorical questions loose their meaning around here...

    to be more explicit. since gelcells are typically designed for a 3-5 yr lifespan, anything that makes it hard to replace them is a huge usability issue. I just wonder what oldtimer's experience here was. I also wonder how salt water invasion was handled - seems another big issue what with salt water being conductive...

    oldtimer?
     
  12. Hero999

    Hero999 Banned

    Joined:
    Apr 6, 2006
    Messages:
    14,902
    Likes:
    79
    Location:
    England
    I bet that was slow, there again I suppose you're not after speed.
     

Share This Page