Re: [PSUBS-MAILIST] Diesel Generators

On 9/27/07, Peter Madsen <peter@submarines.dk> wrote:

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 -----

From: Øystein Skarholm

To: personal_submersibles@psubs.org

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:

http://www.engrosservice.no/

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
>>>
>>>
>>>
>>>
>>>************************************************************************
>>>************************************************************************
>>>************************************************************************
>>>The personal submersibles mailing list complies with the US
>>>Federal
>>>CAN-SPAM Act of 2003.  Your email address appears in our database
>>>because either you, or someone you know, requested you receive
>>>messages
>>>from our organization.
>>>
>>>If you want to be removed from this mailing list simply click on
>>>the
>>>link below or send a blank email message to:
>>> removeme-personal_submersibles@psubs.org
>>>
>>>Removal of your email address from this mailing list occurs by an
>>>automated process and should be complete within five minutes of
>>>our server receiving your request.
>>>
>>>PSUBS.ORG
>>>PO Box 53
>>>Weare, NH  03281
>>>603-529-1100
>>>************************************************************************
>>>************************************************************************
>>>************************************************************************
>>>
>>
>>
>>--
>>Jeg beskyttes af den gratis SPAMfighter til privatbrugere.
>>Den har indtil videre sparet mig for at få 23516 spam-mails.
>>Betalende brugere får ikke denne besked i deres e-mails.
>>Hent gratis SPAMfighter her: http://www.spamfighter.com/lda
>>
>
>
>
>
>************************************************************************
>************************************************************************
>************************************************************************
>The personal submersibles mailing list complies with the US Federal
>CAN-SPAM Act of 2003.  Your email address appears in our database
>because either you, or someone you know, requested you receive
>messages
>from our organization.
>
>If you want to be removed from this mailing list simply click on the
>link below or send a blank email message to:
> removeme-personal_submersibles@psubs.org
>
>Removal of your email address from this mailing list occurs by an
>automated process and should be complete within five minutes of
>our server receiving your request.
>
> PSUBS.ORG
>PO Box 53
>Weare, NH  03281
>603-529-1100
>************************************************************************
>************************************************************************
>************************************************************************
>
************************************************************************ ************************************************************************ ************************************************************************ The personal submersibles mailing list complies with the US Federal CAN-SPAM Act of 2003. Your email address appears in our database because either you, or someone you know, requested you receive messages from our organization. If you want to be removed from this mailing list simply click on the link below or send a blank email message to: removeme-personal_submersibles@psubs.org Removal of your email address from this mailing list occurs by an automated process and should be complete within five minutes of our server receiving your request. PSUBS.ORG PO Box 53 Weare, NH 03281 603-529-1100 ************************************************************************ ************************************************************************ ************************************************************************

--
Best Regards
Øystein Skarholm
www.ubat.no

Jeg beskyttes af den gratis SPAMfighter til privatbrugere.
Den har indtil videre sparet mig for at få 23563 spam-mails
Betalende brugere får ikke denne besked i deres e-mails.
Hent en gratis SPAMfighter her.