[C320-list] FW: Re: A-B Cold Machine: power consumption

[Richard A. Walker]

Being in Southern California we freeze Orange Juice and take it out as
needed for the 3 week trip.  WE also freeze filtered water from the home
filter thus saving on bottled water.

Cheers,
 
Dick Walker
C-320 (687) WindWalker II
740 Olive Ave.
Coronado, CA 92118-2136
619.435.8986

-----Original Message-----
From: c320-list-bounces at catalina320.com
[mailto:c320-list-bounces at catalina320.com] On Behalf Of amshd2 at aol.com
Sent: Thursday, October 19, 2006 6:14 AM
To: c320-list at catalina320.com
Subject: Re: [C320-list] FW: Re: A-B Cold Machine: power consumption

frezze water in plastic milk bottles then use a bungge cord to secure  
 
 
-----Original Message-----
From: jonvez at comcast.net
To: c320-list at catalina320.com
Sent: Thu, 19 Oct 2006 8:14 AM
Subject: Re: [C320-list] FW: Re: A-B Cold Machine: power consumption


Jeff,

I had the exact same experience with the same setup you did. The insulator
pad, 
two blocks of ice and a heat wave--14 days and there were still remnants of
ice. 
The rocking noise hit me at anchor at about 2 in the morning and I spent
about 
90 minutes trying to figure out what it was, had no luck and a day later
while 
steering on an all day sail the light bulb went off! I'm going to have to
figure 
out how to secure the blocks next time so they don't pound a hole in my 
reefer....does anyone have suggestion??

Regards,

Jon Vez

-------------- Original message -------------- 
From: "Jeff Church" <jjemail at comcast.net> 

> When I went cruising this summer in 95 - 99 degree temps I put 2 blocks of

> ice in the bottom of the reefer and a foil waffled insulating pad under
the 
> lid. I also put a small battery operated fan near the evaporator. While 
> motoring I kept the thermo set to about 6.5. As I emptied bottles of
water, 
> I refilled them and placed them in and around the evaporator figuring the 
> more cold/frozen mass and less air space the better. When I initially
loaded 
> the reefer (to the brim) everything was already cold or frozen and it
stayed 
> that way for the entire 12 days. 
> 
> On a humorous note (sort of): At one point on the trip I heard noises that

> sounded like a log or something heavy was bouncing off the hull. The noise

> was loud enough that I ran around checking the bilge for leaks or damage. 
> The noise repeated a couple of times and I started to think that I had 
> somehow snagged something heavy. Eventually I realized that those blocks
of 
> ice rolling around the bottom of the reefer sound just like something 
> pounding on the hull! 
> 
> JeffC 
> 
> 
> ----- Original Message ----- 
> From: "Karl Mielenhausen _/) " 
> To: 
> Sent: Wednesday, October 18, 2006 5:17 PM 
> Subject: [C320-list] FW: Re: A-B Cold Machine: power consumption 
> 
> 
> > 
> > I did a check on mine earlier this year. 
> > 
> > As I recall, the fridge was lightly loaded, I had an extra foam panel 
> > across the top as I usually do, the water and air temps were both around

> > 75F. The compressor cycled on and off such that the duty cycle was about

> > 33%. As a result, I figure 40 AH/day when cruising. 
> > 
> > 
> > 
> > Has anyone tried extra insulation on the freon lines running between the

> > compresser and the coldplate (at least the cold one)? My lines appear to

> > be in some split loom tubing... probably provides little in the way of 
> > insulation. 
> > 
> > 
> > 
> > It was also recently suggested that you install a fan inside the fridge
to 
> > blow on the coldplate. Said to reduce the duty cycle and reduce 
> > temperature stratification within the box. 
> > 
> > 
> > 
> > Karl Mielenhausen 
> > 
> > 2000 C320 Hull#690 "Silver Lining" 
> > 
> > New Bern, NC 
> > 
> > http://members.cox.net/mielen/From: Jeff Church [mailto: 
> > jjemail at comcast.net] 
> > 
> > To: c320-list at catalina320.com 
> > 
> > Date: Wed, 18 Oct 2006 16:24:02 -0500 
> > 
> > Subject: Re: [C320-list] A-B Cold Machine: power consumption 
> > 
> > 
> > 
> > Warren,

On page 27 the manual for my 1998 ColdMachine says to 
> > figure 5 amps running 
and 1.8 to 2.4 amps on average. That would 
> > equate to the unit running 36 to 
48 percent of the time. I measured a 
> > running draw of 5.7 amps with a Link 20 
battery monitor. At 48 percent 
> > that would put the average draw at >2.7 amps. 
The complete Energy 
> > Inventory is posted in the Scanned Documents sub-album 
on the C320 
> > site.

JeffC

----- Original Message ----- 
From: "Warren 
> > Updike" 
To: "Catalina 320 Mail List" 
> > 
Sent: Wednesday, October 18, 2006 3:34 
> > PM
Subject: [C320-list] A-B Cold Machine: power 
> > consumption


The newer Cold Machines draw about 5A. The factory 
> > rep. at the Annapolis 
Boat Show said my 13 year old machine might draw 
> > more like 6-7 A. My 
question has to do with duty cycle: the amount of 
> > time under a particular 
situation that the machine might actually be 
> > running 
> > usually expressed as a 
percentage. That is to say, my machine is on 
> > 24/7 when we're on the boat, 
but it only actually runs and draws 
> > current for intermittent periods. Does 
anyone have any information on 
> > the duty cycle of the Cold Machine on the 320 
under different ambient 
> > temperature conditions?

The spreadsheet of Estimated Cruising 
> > Electrical Loads from the (old?) 320 
website shows a usage of 10 
> > hrs/day. That is a 40% duty cycle. I have no 
idea how realistic that 
> > figure is for estimating electrical load.

Warren & Pattie 
> > Updike
C320, #62, 1994, "Warr De Mar"
Frog Mortar Creek, Middle 
> > River
Chesapeake Bay 



> > 
> > _______________________________________________ 
> > 
> > 
> > 
> 
> 
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