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Øystein,
The unit shown is aircooled. Small direct injection
aircooled diesels can be quite cheap, but are ill suited for submarine use. This
unit will release in the order of 10 kW heat - into the limeted air in the boat.
Quite surprising - this would turn a small boat into a baking oven, with
much too high tempretures. I tryed a unit like this in Freya during 2002, and it
had to get out due to heat problems. Second - the aircooled unit are NOISY
beond belief.
I like to idea of a midget gennerator - but to
use this you have to do a lot of modifications.
There is something caled a
"wispergen" on the market - its a very
silent stirling cycle generator - that is watercooled. Output 0.8 kW,
and there is something caled a pandagenerator -
also to be found on the net - that meets these uses. Only problem is cost. They
are much more expensive, yet silent and potentially the wispergen could be the
basis of a smal AIP unit.
Regards,
Peter
----- Original Message -----
Sent: Thursday, September 27, 2007 5:20
AM
Subject: Re: [PSUBS-MAILIST] Diesel
Generators
Here is a link to one dealer having a diesel aggregate 3,5kW for
4990.-NOK. The one I am thinking of buying is a bit smaller, but this was
found in a store and I cant find it on the net at this moment.
Link:
On 9/27/07, Joseph
Perkel <joeperkel@hotmail.com>
wrote:
Patrick,
Westerbeke and, Yanmar Marine have very small footprint, marine dedicated
units. Take a peek at their websites.
Joe
From: "Patrick" <pat_man_ta@hotmail.com>
Reply-To:
personal_submersibles@psubs.org
To: <personal_submersibles@psubs.org >
Subject: Re: [PSUBS-MAILIST] Diesel
Generators
Date: Wed, 26 Sep 2007 16:36:01
-0400
>Thanks very much
Peter!
>
>I would also prefer something that stays in the
water
>rather than a smaller craft which is part of why I'm
exploring
>the diesel/electric route.
>
>I am working
on a core model in Pro-E that I will ideally use
>to generate
multiple design solutions and variations to be
>explored and driven
by, ultimately, budget and access to
>the water.
>
>A
diesel/electric system is something I am familiar with in
concept
>but I wanted to know what equipment and arrangements
people
>actually used. I am by no means rushing out to buy a
generator
>tonight! ;D
>
>
>
>-----
Original Message ----- From: "Peter Madsen"
><
peter@submarines.dk>
>To: <personal_submersibles@psubs.org>
>Sent:
Wednesday, September 26, 2007 3:31 PM
>Subject: Re: [PSUBS-MAILIST]
Diesel
Generators
>
>
>>Patrick,
>>
>>
>>Diesel
electric submarines are not always "diesel electric" in the
>>sense
>>that they operate d.generators to run
electric motors - often
>>you have two independent powertrains -
one electric - the other
>>diesel.
>>
>>In a
Psub diesel sub - the diesel is used to transit to and from a
>>dive
>>location - mostly surfaced. That is most
economic done with
>>something like a
>>ordinary diesel
/ mechanical gear - clutch box as in any motor
>>yacht.
They
>>are available down to 8 - 10 hp fitting nicely with a 3
ton
>>submarine
>>
>>Submerged the diesel is
tuned off and the exhaust is closed with a
>>valve.
>>The gear box lever is set to neutral - and a
diminutive e motor is
>>then used
>>to propel the boat
at much lower speed. Surfaced you might design
>>for 3
hp
>>pr. ton, while submerged you will need about 0.5 to 1 hp pr
ton.
>>Its really
>>not very difficult and will improve
you boats range ten if not
>>hundredfold.
>>
>>As usual - the bigger the
better. A long hull give high speed a
>>short
give
>>low surfaced speed. I in any way possible go for a boat
the like
>>most ships
>>stays in the water and is
transported on water. Its much simpler
>>than
>>trailers and tight weight
budgets.
>>
>>These views are of cause my own, and I
will defend anybody's right
>>to be
>>disagreeing with
me...
>>
>>Regards
>>
>>Peter
Madsen
>>
>>
>>
>>----- Original
Message ----- From: "Patrick"
>><pat_man_ta@hotmail.com>
>>To: <
personal_submersibles@psubs.org>
>>Sent: Wednesday,
September 26, 2007 5:07 PM
>>Subject: [PSUBS-MAILIST] Diesel
Generators
>>
>>
>>>I've been searching
around to try and find the smallest of the
>>>small
>>>marine diesel generators but so far
the smallest one I've found is
>>>about
>>>130
-210lbs and I'm not even sure they'd be appropriate for use
>>>inside
a
>>>psub.
>>>
>>>Does anyone run
small scale D/E in their sub? If so, what are you
>>>using?
>>>
>>>~patrick
>>>(creeping
out of the shadows)
>>>
>>>Ref.:
>>>
http://www.kohlerpower.com/marine/detail.htm?sectionNumber=13461&categoryNumber=8361&prodnum=71561
>>>
>>>
http://www.centralmainediesel.com/order/4300N.asp?page=4300N
>>>
>>>
>>>
>>>
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>>
>>
>>--
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beskyttes af den gratis SPAMfighter til privatbrugere.
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>
>
>
>
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--
Best Regards
Øystein
Skarholm
www.ubat.no
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