Hi
Most batteries don't like or last with quick charges so you've got three quick alternatives to get around your noise problem:
1) Install a battery bank big enough to last your mooring time (use a standard noisy air cooled genset when you're out of the area)
2) Use a heat exchanger on your engine to cool it with sea water then heavily insulate it (way less noise but still some)
3) Use a methanol etc type fuel cell e.g. Efoy (expensive but work silently and beautifully)
Don't forget soar panels, wind turbines of drogue/flow generators depending on your situation.
Cheers
On 29 Dec 2013 08:24, "bob jennings" <sabre281@yahoo.com> wrote:
Hi, new member here.EP for recreational boats is a pretty interesting concept.I have a 28' project sailboat & want to repower the old Volvo before I put her in the water. I've pretty much decided to go the electric route. There is a lot of information out there & decided to join the group before undertaking my science experiment. I am leaning towards the 5KW electric yacht system.My boat will be on a mooring so I'm contemplating building a small DC generator instead of an AC charger run off a gas generator. Seems many that go this route have a slip with shore power or use the Honda 2000 as part of their hybrid but from what I've read they have to run her for 3-4 hours when recharging the battery bank due to amp limitations of the generator. Coming from the power boat crowd I don't mind a little noise but up here in the northeast the sailors go nuts when you run a generator in an anchorage....Is a DC generator fueled by gas or diesel a viable solution for quickly recharging a bank compared to an AC charger & Honda generator?Another thought I had. Has anyone tried to install a sheave on the prop shaft so that it turns an alternator when in EP mode to help recharge the battery bank? I wasn't sure if the addition of a sheave & belt put so much additional torque on the electric motor that it was counter productive.Thanks & Happy New Year!Bob Jennings
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