Dennis, That's correct. It is essentially a small radiator. As long as the ambient temp around it is less than the temp of the coolant it helps. Its a matter of degree.
Joel 35/3 On Fri, Dec 20, 2013 at 5:06 PM, Dennis C. <capt...@yahoo.com> wrote: > I seem to recall reading a testimonial that the Isotherm SP units will > cool even with the boat on the hard. Tells me that jellyfish might not be > an issue. What's the heat transfer coefficient for a jellyfish, anyway? > > I looked hard at the heat rejection issue because the water temperature on > the bayou where I keep Touche' can exceed 85 F at times. I'm thinking the > refrigerant is 220-250 F in the heat transfer coil in the thruhull. That's > quite a bit of temperature differential for heat rejection. > > I like the idea of no cooling fan or cooling water pump for both energy > and reliability. > > Dennis C. > Touche' 35-1 #83 > Mandeville, LA > > > ------------------------------ > *From:* allen <allenmi...@earthlink.net> > *To:* cnc-list@cnc-list.com > *Sent:* Friday, December 20, 2013 3:37 PM > *Subject:* Re: Stus-List Reefer in a c&c30MKII > > Pete, > > I'll look the next time I'm in Hampton. Originally I had two Rolls wet > cell batteries, 330 AH total capacity. They barely fit into the well under > the aft cabin bunk. The were strapped in, but I couldn't get the battery > box tops on and secured. Topping off the center cells was a bear. After > the lightning strike, I replaced them with AGMs which were lighter and > shorter which facilitated getting the bunk baseboard to fit level in its > inset. > > BTW, one of my concerns with the reefer was the water cooling issue. I > see those jellyfish in the water and I wondered if the SP action would suck > them in. Glad to see my concerns were well founded. > > Allen Miles > S/V Septima 30-2 > Hampton, VA > > *From:* kelly petew <kellype...@msn.com> > *Sent:* Wednesday, December 18, 2013 10:21 AM > *To:* cnc-list <cnc-list@cnc-list.com> > *Subject:* Stus-List Reefer in a c&c30MKII > > allen, Hi, > I have the "Cold Machine" [Adler/Barbour] in my 30. It's air cooled, and > I've had no problems with it in the 10+ years I've owned Siren Song. > It was installed by PO. > It is located under the port settee, directly in front of the galley > sink. It's vented on the right just above sole. > Because it's air-cooled, it probably adds to the cabin temps, but I don't > think it's material. > I'll freeze a gallon jug of H20, put it in the box, and turn on the frig. > This gets everything cold quickly without a lot of melting ice. > > FWIW, a cruising friend of mine has a water-cooled unit [Grunnert, I > think]. While the unit does a really good job, we had lots of problems > this past season with blockages mainly due to jellyfish ["the cockroach of > the Chesapeake!]. > > So, I'd go with air cooled unit. > As far as ampacity, I have 2 house batteries, and 1 start batt., but it's > probably 50% of your capacity. I usually leave it "off" unless I'm > plugged in, or motoring. > I'm curious what brand of battery you have, and did you have to modify the > aft cabin space?? I'd like to increase my amps. > > Pete Winters > > s/v Siren Song > '91 C&C30 MKII > Deltaville, VA > > ------------------------------ > _______________________________________________ > This List is provided by the C&C Photo Album > http://www.cncphotoalbum.com > CnC-List@cnc-list.com > > _______________________________________________ > This List is provided by the C&C Photo Album > http://www.cncphotoalbum.com > CnC-List@cnc-list.com > > > > _______________________________________________ > This List is provided by the C&C Photo Album > http://www.cncphotoalbum.com > CnC-List@cnc-list.com > > -- Joel 301 541 8551
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