Date: Mon, 17 Jul 2006 13:44:44 -0400
Reply-To: Jim Henry <jch@JCHGIS.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Jim Henry <jch@JCHGIS.COM>
Subject: Re: Barely scientific test results, Dometic R182 refrigerator
In-Reply-To: <44B92DDE.3020102@gmail.com>
Content-Type: text/plain; charset="us-ascii"
I have seen suggestions that turning the Domestic upside down and letting it
sit that way for a few days is the equivalent of an overhaul. Did you by
chance try this at any time with yours, or if you did not, could you. It
would be interesting to compare.
Jim Henry
Durham, NC
84 Westy
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@GERRY.VANAGON.COM]
> On Behalf Of Michael Elliott
> Sent: Saturday, July 15, 2006 2:03 PM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Barely scientific test results, Dometic R182 refrigerator
>
> Adding to the Body of Knowledge Since 1950, Dept.
>
> So I've got this Dometic sitting around after installing a
> Norcold refrigerator in Mellow Yellow, and decided to do some
> performance measurements by hooking it up to 120V, sticking a
> wireless thermometer inside, sealing the door, and
> calculating its cooling power. I did five measurements over
> five successive days:
>
> Four of the measurements were done in open air: No rear fan
> (convection only), reefer empty; rear fan on, reefer empty;
> no rear fan, reefer with some soda cans inside; rear fan on,
> soda cans inside.
>
> The final measurement was done with a cardboard box set
> around the reefer, to sorta emulate it being in a cabinet.
> Fan on, empty.
>
> In all cases, the reefer was set up the night ahead so it
> would have several hours to stabilize before I began recoding data.
>
> Summary: compared with convective (natural non-forced air
> cooling), running the fan provided about 4 degrees F of
> additional cooling. Temps did not get above 90F for very long
> so I did not have a chance to test under hotter conditions,
> which is unfortunate as absorption refrigerators are said to
> not work well above 90F. The effect of adding "thermal mass"
> in the form of cans of soft drinks is visible.
>
> The results are posted at
> http://static.flickr.com/58/190152837_c5b20ee616_b.jpg
>
> --
> Mike "Rocket J Squirrel" Elliott
> 71 Type 2: the Wonderbus
> 84 Westfalia: Mellow Yellow ("The Electrical Banana")
> 74 Utility Trailer. Ladybug Trailer, Inc., San Juan Capistrano KG6RCR
>
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