I have been looking for a system like what you describe with the BD80, however I cannot seem to find one. my inclination would be to use a BD 50 and reduce the box if is not adequate, since the A/B is essentially plug and play and relatively inexpensive. I can get condenser and evaporator units for around $1100.
I have emailed Kollmann he says 12cuft and 4" insulation would work with the A/B. The stonecold units mentioned earlier (for my size box) look to be identical for all intents and purposes (price and layout) to the Adler Barbour when you include the pump kit for the SCM. They are the same price (~$1500). The E-Zcold.com system that would fit my box (up to 12cuft) was quoted as follows: EK12CPAW-2 $2299.00 less 13% fall discount plus shipping, is precharged with refrigerant and oil, you just push four fittings together and charge goes through system. Other systems I have looked at were the kits found at Rparts.com which gives you some amount of customization in their design, although the system is not just plug and play there is soldering, assembly, testing and charging that must be done by the buyer, but you get the system for about $800 -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Lee Haefele Sent: Monday, November 19, 2007 6:10 PM To: [email protected] Subject: Re: [Liveaboard] refrigeration Why not get a system with a BD 80 compressor. All claims aside, the cooling is going to be the BTU output of the compressor. So one brand will be similar to another. Some have sensors that switch the compressor to high speed when they sense charging voltage. Water cooling is to be avoided if possible, these compressors are in the area of only 300 BTU/hour of run time, not a lot of heat gain in the boat. Try to route the output air somewhere that you want dried out. With water cooling there is the pump electricity use, this is not made up in efficiency gains, there is pump reliability and there is heat exchanger failure that requires total system replacement. 12 cu ft requires the biggest compressor you can get. I have a 7.5 cu ft and Sea Frost advises I should have a BD 80X. When I tell them that I get by on a BD3F (~70% of a BD50), they say I must have great insulation. I also recommend Sea Frost for their excellent customer support. I had Adler Barbaur on my last boat, it never needed any service. Sea Frost uses an adjustable expansion valve instead of a capillary tube, this provides adjustment of cooling temperature vs cooling volume that allows using different size evaporators. Other brands have evaporators with integrated capillary tube matched to a certain compressor. All the current Danfoss compressors are adjustable speed. Suggest reading "12 and 24 Volt Refrigeration" by Kollmann. Lee Haefele Leopard 38 cat "Alesto 2" ----- Original Message ----- From: "Ballantyne, Merrill" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Monday, November 19, 2007 11:25 AM Subject: Re: [Liveaboard] refrigeration > Thanks for all the recommendations- the reason I'm looking at Adler > Barbour is because they claim 35f with a 15cuft box size with 40% run > time and 80f ambient temp.. I haven't found any similar claims from > other manufacturers using the BD50 compressor. This box is 12.2 cuft > with 4" insulation if I get 40 degrees at 40% run time it will be > adequate, if I get 35 degrees at 40% run time I'll be happy. > > The water cooled feature is something I would need not because of > efficiency, but because any additional heat in the boat has to be moved > out with A/C to stay comfortable. I might as well put the heat directly > into the water and save the load on the other heat pumps. In my home > waters we have more of a fresh/brine mix than an actual full salt water, > so growth is less of an issue here than in many places. > > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Norm of > Bandersnatch > Sent: Sunday, November 18, 2007 10:11 AM > To: [email protected] > Subject: Re: [Liveaboard] refrigeration > > > I have used stand-alone, air cooled, units with success. > > The first was an old RV propane/electric unit. Both the propane and the > electric were to heat the "boiler" and thus operate the unit. Although > the > propane part worked well the electric parts, heater tapes on the boiler, > failed before a year was up. The biggest problem was the front opening > door leaking cold and the thinness of the insulation making for poor > efficiency. > > Next I had two Engel units, 1.5 cu/ft each, one set to zero the other to > 38 > deg F. These worked very well, drew 2 amps each when running but also > had > thin insulation having been designed for vehicle use with unlimited > supply > of 12 VDC. > > We now have two Sundanzer units, a freezer and a reefer, 5 cu/ft each, > but > because of 4.3" of insulation also draw 2 amps when running. We are > very > happy with these but do admit the may be too big for most boats. > > The Engel units are built in such a way as to be able to remove the > machinery as a whole, opening up the possibility of making your own box > with good insulation and installing the Engel machinery in that box. > > Also I have seen in magazines boxes like the Engel units that appear to > have more insulation and plastic rather than steel shells. > > I recommend not using water cooled units. I have heard of lots of > problems > due to fouling of the seawater circuit with organisms, plus the > additional > load of the seawater pump. > > For satisfactory results no matter how you produce the cold, the box > must > be top opening with at least four inches of insulation. > > > Norm > S/V Bandersnatch > Lying Julington Creek FL > > >> [Original Message] >> From: Ballantyne, Merrill <[EMAIL PROTECTED]> >> To: <[email protected]> >> Date: 11/16/2007 12:36:28 PM >> Subject: [Liveaboard] refrigeration >> >> I would be interested in a survey of DC refrigeration systems aboard- >> does anyone have any experience with the performance of Adler Barbour >> systems- I am interested in different configurations of this system >> that people have installed, what percentage of run-time do users >> experience etc.. -thanks >> >> _______________________________________________ >> Liveaboard mailing list >> [email protected] >> To adjust your membership settings over the web > http://www.liveaboardnow.org/mailman/listinfo/liveaboard >> To subscribe send an email to [EMAIL PROTECTED] >> >> To unsubscribe send an email to [EMAIL PROTECTED] >> The archives are at http://www.liveaboardnow.org/pipermail/liveaboard/ >> >> To search the archives > http://www.mail-archive.com/[email protected] >> >> The Mailman Users Guide can be found here > http://www.gnu.org/software/mailman/mailman-member/index.html > > > _______________________________________________ > Liveaboard mailing list > [email protected] > To adjust your membership settings over the web > http://www.liveaboardnow.org/mailman/listinfo/liveaboard > To subscribe send an email to [EMAIL PROTECTED] > > To unsubscribe send an email to [EMAIL PROTECTED] > The archives are at http://www.liveaboardnow.org/pipermail/liveaboard/ > > To search the archives > http://www.mail-archive.com/[email protected] > > The Mailman Users Guide can be found here > http://www.gnu.org/software/mailman/mailman-member/index.html > > _______________________________________________ > Liveaboard mailing list > [email protected] > To adjust your membership settings over the web > http://www.liveaboardnow.org/mailman/listinfo/liveaboard > To subscribe send an email to [EMAIL PROTECTED] > > To unsubscribe send an email to [EMAIL PROTECTED] > The archives are at http://www.liveaboardnow.org/pipermail/liveaboard/ > > To search the archives > http://www.mail-archive.com/[email protected] > > The Mailman Users Guide can be found here > http://www.gnu.org/software/mailman/mailman-member/index.html > > > -- > No virus found in this incoming message. > Checked by AVG Free Edition. > Version: 7.5.503 / Virus Database: 269.16.0/1137 - Release Date: > 11/18/2007 5:15 PM > > _______________________________________________ Liveaboard mailing list [email protected] To adjust your membership settings over the web http://www.liveaboardnow.org/mailman/listinfo/liveaboard To subscribe send an email to [EMAIL PROTECTED] To unsubscribe send an email to [EMAIL PROTECTED] The archives are at http://www.liveaboardnow.org/pipermail/liveaboard/ To search the archives http://www.mail-archive.com/[email protected] The Mailman Users Guide can be found here http://www.gnu.org/software/mailman/mailman-member/index.html _______________________________________________ Liveaboard mailing list [email protected] To adjust your membership settings over the web http://www.liveaboardnow.org/mailman/listinfo/liveaboard To subscribe send an email to [EMAIL PROTECTED] To unsubscribe send an email to [EMAIL PROTECTED] The archives are at http://www.liveaboardnow.org/pipermail/liveaboard/ To search the archives http://www.mail-archive.com/[email protected] The Mailman Users Guide can be found here http://www.gnu.org/software/mailman/mailman-member/index.html
