kool keel diesel engine

Discussion in 'Diesel Engines' started by carlos bairo, Sep 28, 2010.

  1. apex1

    apex1 Guest

    Read the posts and get the answer! It was already said just one page back!

    Coolant flow direction makes a big difference too, and that is possible to design proper.
    That too was mentioned just a few posts back.
    Maybe you better put the drivel kings on your ignore list instead?

    That will sure function John.
    I have missed the 20hp figure in singleprop´s post.

    Make it easier Teddy (and safer),

    as I said before, 100hp require 2m² in Alu, 6m² in steel, and that is what the engine manufacturers tell us (the industry).

    A optimized flow* of the coolant, or tubes make a better result than a flat panel, of course.
    *entrance of coolant is always at the aft end, forcing the fliud to flow against the seawater flow.
    But both rules of thumb (Gerrs and ours) are worth nothing, when the area is calculated to the minimum, and one runs the engine for hours in warm waters at anchor.
    Barnacles and marine growth do their part to make a minimal setup insufficient.
    So, that should be done with a nice safety margin. Hence my larger figures.
    And Gerrs "under 8kn" is a fault. It should be better saying at 8kn, because under 8 you slowly (pun intended) run into the insufficient range.

  2. carlos bairo
    Joined: Dec 2008
    Posts: 42
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    Location: australia

    carlos bairo Junior Member

    HI migel.thanks for the info it's glad to exchange the idea's with people from espana
    thats is a beautiful cantry i veen there lasat year ,i from URUGUAY veen in AUSTRALIA
    since 1970 if your search in the forum under CARLOS BAIRO foto laibery theare some pictu
    of my new boat under constrution ,neow it's been tourn over and the hull welded inside
    this my email leticiabairo@yahoo.com.au to contat espanol
  3. larry larisky

    larry larisky Previous Member

    on some steel hull we used a lot of box cooling, on the lower side of the hull, well underwater of course, with a screen. it was used on some tugboat.
    i can't comment more since i don't know much about these system.
  4. singleprop
    Joined: Mar 2008
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    Location: Hong Kong

    singleprop Junior Member

    I have run the calculations for skin cooler area using a couple of different sources, Beta Marine, Dave Gerr, Catarpillar cooling documents and John Deere AG-24 document.

    There is quite a bit of difference in the area required;

    John Deere comes up with much more cooler area than the three others engine suppliers. John Deere's data is in line with Richards thumbrules. I would tend to go with John Deere/Richard although it will require much more pipe length (if I can fit it). The John Deere document is much more specific so it makes it a very credible document to work from.
    Last edited: Nov 14, 2010

  5. carlos bairo
    Joined: Dec 2008
    Posts: 42
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    Location: australia

    carlos bairo Junior Member

    yes gonzo thanks for the info .i need you help tu contact peple on montevideo on my return for good beacause i do not found marine forums
    on uruguay ,i will take TITAN with me.,i will need information from members
    on the marinas on montavideo and i velive you my have contacts.
    i am a master builder naval pressure vessels 10 yers /montevideo/35yers
    australia/d i r-welder consultant and fabrications / retire this year

    best regards carlos bairo
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