How about one that's 2 meters? ;-) On a 15m canal boat you could have more than one. Put three up and call it a clipper. You might also find that the objects that block the wind also shade the solar cells.
Not to long ago barges had sails as well, and whats a wind generator but really efficient sail. How much more efficient than a sail, I don't know. Using the estimating spreadsheet could give you an idea. My boat has 80 m^2 of sail. So aprox 20 kw for the equivalent area windmill. Which would drive it at least to hull speed. There is a ton of unknown and potential problems with this approach, not the least of which is "if you want a sailboat, buy a sailboat, not a contraption that sorta works like one if you squint".
--- In electricboats@
>
> Yes. I also having trouble picturing a wind generator that is "3 meters across" sitting on top of a narrow (6' 10") canal boat. :-)
>
> --- In electricboats@
> >
> >
> > I think that trying to use wind on a canal boat would be a disappointing
> > exercise. Wouldn¹t the wind be blocked much of the time?
> >
> >
> > Chris
> >
> >
> > On 2/3/10 9:37 AM, "Mike" <biankablog@
> >
> > >
> > >
> > >
> > >
> > >
> > > Chris:
> > >
> > > On board my 30 foot sailboat I go with a three legged stool approach to
> > > charging my 48 volt battery bank. I have solar panels, wind generator and a
> > > Honda 2000 eu gas generator. Actually it's a four legged stool because I can
> > > also plug in to dockside power too. My wind generator is a 48 volt Marine Air
> > > X 400 watt unit. It is about $800 and works well to keep things charged up in
> > > combination with the solar panels. I don't think you need a big 2000 watt wind
> > > generator for your application. But, you should check out the winds in your
> > > cruising grounds. You might be better off with just solar panels and a
> > > generator for your charging needs. I may be wrong but, I don't think canals
> > > will have enough wind energy to make a wind generator a viable charging
> > > option.
> > >
> > > Capt. Mike
> > > http://biankablog.
> > >
> > >
> > > --- On Tue, 2/2/10, toddbates99 <toddbates99@
> > >>
> > >> From: toddbates99 <toddbates99@
> > >> Subject: [Electric Boats] Re: solar canal rambling
> > >> To: electricboats@
> > >> Date: Tuesday, February 2, 2010, 7:57 PM
> > >>
> > >> Just a thought but would a wind generator be appropriate? 24 hour a day
> > >> charging. The heaver the wind the better the charging. MIght have to have
> > >> some sort of mount so it could be raised and lowered for bridges etc. And I
> > >> have no idea what the winds would be like. A 2kw 48 volt system is about
> > >> $2,000 US and 3 m in diameter. About the size of a dinghy sail so not much
> > >> healing moment (depending on the mast height).
> > >>
> > >> On the other hand wind generators can be noisy ( good design can prevent this
> > >> ), mechanically complex and there are air draught issues.
> > >>
> > >> --- In electricboats@ yahoogroups. com
> > >> <http://us.mc840.
> > >> > , "hardy71uk" <p0054107@ .> wrote:
> > >>> >
> > >>> > Many thanks for all your replies .
> > >>> > The LiFePO batteries certainly do seem to make it feasible if they live up
> > >>> to their reputation. Charging at marinas seem to be too expensive in the UK
> > >>> as they are geared more for long term mooring rather than overnight stops.
> > >>> >
> > >>> > regards
> > >>> > Chris S
> > >>> >
> > >>> > --- In electricboats@ yahoogroups. com
> > >>> <http://us.mc840.
> > >>> m> , "hardy71uk" <p0054107@> wrote:
> > >>>> > >
> > >>>> > > theres an extensive canal network here in UK. I've often thought it
> > >>>> would be great to do a leuisurely trip . stopping for a while to explore an
> > >>>> area whilst charging batteries from solar panels and then moving on. The
> > >>>> problem would seem to be that if charging over say a week or two that the
> > >>>> batteries would most of the time be only partly charged . Is this a fast
> > >>>> way to kill lead acid batteries or would a slow charge resist sulphation?
> > >>>> > > I'm guessing that a better regime would be to just do a few miles per
> > >>>> day using a small depth of charge. Any comments?
> > >>>> > >
> > >>> >
> > >>
> > >
> > >
> > >
> > >
> >
>
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