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Old 01 November 2007, 16:29   #11
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If its that bad shorepower would be a better bet than a solar pannel.
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Old 01 November 2007, 16:40   #12
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In 1 day my boat can collect 1,000L - that's a massive amount.
Cod,

Your boat must have plan view area of around 15 m^2 so you would need to get a daily rainfall of 66mm to collect 1000L. Although that amount of rain can fall in one exceptional day, that sounds more like 2 weeks than 1 day. It certainly would not be normal to get that much rain constantly for a whole week at once.
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Old 01 November 2007, 16:52   #13
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I am sure Codders is correct. He never exagerates.
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Old 01 November 2007, 16:54   #14
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Cod,

Your boat must have plan view area of around 15 m^2 so you would need to get a daily rainfall of 66mm to collect 1000L. Although that amount of rain can fall in one exceptional day, that sounds more like 2 weeks than 1 day. It certainly would not be normal to get that much rain constantly for a whole week at once.
It really can be that bad down here. I didn't say it was every day but we do get a hell of a lot. I know it will collect that much because I have taken the battery home to charge and come back the following day after typical heavy rain and it's taken almost 1hr to pump out.

I once worked it out that Wales gets enough rain to provdie for the whole population of the World!!!
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Old 01 November 2007, 16:56   #15
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I am sure Codders is correct. He never exagerates.


Anyway you live in one of the few places where Solar Power makes a little bit of sense - more than here anyway!!!
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Old 01 November 2007, 17:23   #16
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Of course the only time a solar panel is of any use is in hot weather when you don't really need all the power!!!
Errr . . battery top-up? Fridge? Radio?
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Old 01 November 2007, 17:25   #17
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It really can be that bad down here. I didn't say it was every day but we do get a hell of a lot. I know it will collect that much because I have taken the battery home to charge and come back the following day after typical heavy rain and it's taken almost 1hr to pump out.

I once worked it out that Wales gets enough rain to provdie for the whole population of the World!!!
So you are using the quoted pump rate of your pump to work out how many litres rain there was? mmm... not sure that I would trust the pump manufacturer to quite that extent!

The point I was trying to make was 1000L will be the extreeme rather than the rule.

If your pump takes 1 hour to drain this and draws 6A then your implication is each day you need to put 6Ah of juice back in the battery. In reality the way the weather works you might have two days of high rain fall, two days of moderate rainfall (maybe 1/4 the demand) and then say three much drier days. So in a pretty bad week you might draw 15 Ah rather than over 40 if every day was actually super wet.
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Old 01 November 2007, 18:05   #18
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Yes I agree with your figures - the 1000l is not every day thank God!!! As to the output of the pump as it's a 500gph that's 1875L an hour so my 1000 is not that far off - there is very little head on my pump.

I would say I drain about 20amps a week in bad weather - at the same time the solar panel was giving me about 3amps a week so it did help but only a small amount - I was more concerned about it being blown away!!!
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Old 01 November 2007, 19:26   #19
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- I was blown away!!!
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Old 02 November 2007, 04:43   #20
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Dreadful, why does anyone live there the Sudan would be more hospitable
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