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Old 18-10-2012, 10:07   #16
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Re: Wind or gas

IMHO:

1) try to cut down your consumption (leds? netbooks? tablets? fridges?),
2) otherwise, if cruising in windy areas, go for wind,
3) if no reliable&high wind available, four stroke, silent genset (e.g. the small Hondas).

Fuel cells are nice, but they require special fuel and they are not very quick in delivering the juice (say for a powertool).

Cheers,
b.
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Old 18-10-2012, 10:18   #17
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Re: Wind or gas

Quote:
Originally Posted by Ruffriders View Post
I have 6 batteries 6v 232amp hrs so 1392amp hrs total, with my solar and a 600watt wind generator I think I should be ok, I do have a large refrigeration unit on board that I didn't mention
If you have a 12 volt system, it takes two 6 volt batteries to achieve this voltage.

so really you've only got 696 amp hours of 12 volt power.
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Old 18-10-2012, 11:47   #18
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Re: Wind or gas

Quote:
Originally Posted by Ruffriders View Post
I have 6 batteries 6v 232amp hrs so 1392amp hrs total, with my solar and a 600watt wind generator I think I should be ok, I do have a large refrigeration unit on board that I didn't mention
Wired to deliver 12v that would give you 696 a-hr.

Consider increasing the insulation of your cold box. If you can't put more on the outside, put it on the inside and live with the decrease volume.

Do you have a battery monitor on the boat? Try living aboard for a week and see what your real power consumption is.
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Old 18-10-2012, 12:08   #19
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Re: Wind or gas

I would take the honda 20i on the basis that if you decide later it it isn't needed then it is readily sell-able along the way either to other yachties or locals.

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Old 18-10-2012, 13:06   #20
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Re: Wind or gas

We have gone with a combined wind/solar system, and never have to run an engine for charging purposes. The wind generator really earns its keep during night passages and when it rains. The one place we'd be stuck would be in successive days of thick fog with no wind, but we could always run the diesel at that point for an hour a day.

Best bang for the money, however, would be to replace all lighting with LED. With 580 watts of solar in the tropics, I shouldn't think your system would need much help from a secondary charging system once you converted to LED lighting.
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Old 18-10-2012, 13:11   #21
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Re: Wind or gas

wind or gas? either one is not polite in public
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Old 18-10-2012, 13:29   #22
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Re: Wind or gas

If limited funds are a factor as you say, I'd go for the gas generator for now, until you can afford a wind generator that won't make you enemies in every anchorage in the Caribbean.
I'm not kidding, we can hear the cheap windgens (I'll not mention names to avoid THAT old argument) all around the anchorage and despise their intrusive noise. From a lot of research and personally checking every one out (and talking to the owners) IMO a quiet, reliable windgen will cost you upwards of 2k. The cheaper ones also create more resonance through out the boat as the 3 blades cause much more vibration than the 5 according to owners that have had both.
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Old 18-10-2012, 13:35   #23
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Re: Wind or gas

My bet is his "large refrigerator" is taking alot of his daily juice. I would get that under control or nothing is going to help his batteries from going flat. I would suggest a energy audit first- by himself or a professional. Would save alot of pain in the future.
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Old 18-10-2012, 18:33   #24
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Re: Wind or gas

With the laptop and most other modern electronics it is possible to find a 12VDC power cord. Would save having to use your AC converter and the losses that entails as the bricks usually just convert it back to DC anyway.

You could boil your water on the stove and use a french press, better coffee to boot..
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