Date: Mon, 17 Jul 2006 11:00:48 -0700
Reply-To: "Mike \"Rocket J Squirrel\" Elliott" <camping.elliott@GMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: "Mike \"Rocket J Squirrel\" Elliott" <camping.elliott@GMAIL.COM>
Subject: Re: Barely scientific test results, Dometic R182 refrigerator
In-Reply-To: <025d01c6a9c8$b0899dc0$650fa8c0@JCH>
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I inverted it for a few hours the day prior to beginning the testing.
--
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
On 7/17/2006 10:44 AM Jim Henry wrote:
> 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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