Steve Spence
Renewable energy and self sufficiency
http://www.green-trust.org
http://arduinotronics.blogspot.com/
On 08/30/2010 05:35 PM, Robert Wyatt wrote:
>
>
> There's a list of hybrid-electric vehicles in production here:
> http://en.wikipedia.org/wiki/Hybrid_electric_vehicle
>
> The issue of scale is related to how large of a silencing box you can
> put on that diesel and still have room for the intended use of the vessel.
>
> It's true that the vast majority of hybrid-electric vehicles are
> gas-electric (and not diesel-electric) due mainly to the noisiness and
> stinkiness of diesels (which were originally designed by Rudolf Diesel
> and used by Henry Ford to run on hemp seed oil, which in turn
> contributed to the legislative ban of industrial hemp by the Duponts and
> Hearsts, which in turn required Rudolf to formulate diesel fuel, but I
> know you didn't ask that). In critical-grade applications, such as the
> military, they use, for example, a 6.6L Duramax diesel and go into
> "silent mode" using the batteries--something that couldn't be done
> without the hybrid design, but would very likely still be intolerable to
> a green yachtie (it would be to me anyway). There are also plenty of
> quiet diesel generators available, but they are more expensive, of course.
>
> There are good arguments to using diesel instead of gas onboard a vessel
> though. As always, designing a boat is an exercise in compromise and
> depends on the size and purpose of the vessel. There are a handful of
> all-electric boats on the market now....
>
> Robert
> Austin, TX
>
> Eric wrote:
>>
>> Sid,
>>
>> You're absolutely correct. Diesel-electric has been used for many
>> decades and has proven to be more efficient than diesel alone. But
>> there appears to be a problem of scale. Do you know of any specific
>> examples of successful diesel-electric vehicles or vessels that weigh
>> less than 100 tons?
>>
>> Fair winds,
>> Eric
>> Marina del Rey, CA
>>
>> --- In electricboats@yahoogroups.com
> <mailto:electricboats%40yahoogroups.com>
>> <mailto:electricboats%40yahoogroups.com>, "sirdarnell"
>> <sirdarnell@...> wrote:
>> >
>> > I keep seeing this. The military has been using diesel generators
>> with electric engines since the 1930s (maybe earlier) to get more
>> range. So it must be work. Not to mention trains, cruise ships, Ice
>> breakers, freighters, etc.
>> >
>> > --- In electricboats@yahoogroups.com
> <mailto:electricboats%40yahoogroups.com>
>> <mailto:electricboats%40yahoogroups.com>, Daniel Michaels <nov32394@>
>> wrote:
>> > >
>> > > Unless you are going to supplement the generator with solar and
>> wind or shore power I think you will get less range than by just using
>> a diesel engine.
>> > >
>> > > Dan
>>
>
>
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