Date: Tue, 12 Jul 2005 14:37:36 -0700
Reply-To: Michael Elliott <j.michael.elliott@GMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Michael Elliott <j.michael.elliott@GMAIL.COM>
Subject: Re: About them Norcold refrigerators
In-Reply-To: <006f01c58725$7a75b000$640fa8c0@ttowerdef17>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
On 7/12/2005 2:05 PM Doug in Calif wrote:
>Thanks Otmar, for the great report on the Engel 45.
>
>I realize that the batteries would have to be replenished after some use
>How long would you have to run the alternator to replenish two deep cycles
>in the battery compartments?
>Say if you ran the engine for 15 minutes how many amp hours to you actually
>get back?
>
>But what fridge can get down to 30 degrees in 113 degree weather and
>maintain it.
>No westy fridge can even come close to that
>If you can keep the air temp inside the van down to 95 it can drop temps
>down to 5 degrees
>At 78 it will go down to -5 degees below zero!
>You can make some pretty darn cold ice for your other coolers with that much
>cooling power.
>
>I concede the point about the cold air falling out of the westy fridge.
>You guys are right the thermal mass of the food itself will make it a non
>issue.
>
>Its my understanding the swing compressor is only on the Engel 35 and 45.
>You can see the change in amperage on the chart here.
>
>https://www.expeditionexchange.com/engel/
>
>I agree with mike if there was a "hybrid" propane power for night and swing
>compressor for day you would have it all.
>
>
Or, how about this:
http://www.waecousa.com/page.asp?page=rsa-60
This is a Danfoss compressor (used in Engel and Norcold) unit that
somehow can shut down at night and keep stuff cold using some magic
cold/energy accumulator. I have no idea what that "cold accumulator"
system is all about.
--
Mike "Rocket J Squirrel" Elliott
71 Type 2: the Wonderbus
84 Westfalia: Mellow Yellow ("The Electrical Banana")
Carlsbad, CA
KG6RCR
>----- Original Message -----
>From: "Otmar" <otlists@EVCL.COM>
>To: <vanagon@GERRY.VANAGON.COM>
>Sent: Tuesday, July 12, 2005 12:32 PM
>Subject: Re: About them Norcold refrigerators
>
>
>
>
>>At 11:40 AM -0700 7/12/05, Michael Elliott wrote:
>>
>>
>>>Thanks, Doug
>>>
>>>2.5A in freezer mode running, like, 24 hours a day is 60 amp-hours. That
>>>would quickly deplete my aux Optima 50Ah battery unless I added a lot of
>>>supplementary recharging.
>>>
>>>But I know that these reefers do not run 100% of the time. Someplace,
>>>somewhere, I saw a spec page which provided typical duty-cycles. Can't
>>>find it now. And I don't plan to run freezer mode, just below 40F.
>>>
>>>
>>I have a copy of one here:
>>http://www.evcl.com/vw/Accessories/MT45F%20curve_jpg.pdf
>>A bit fuzzy, but the data is there. Ambient temps across the top, and
>>Cabinet temp on the left. The curves just show how long it takes to
>>get to temperature.
>>For instance, the top left one shown that at 25 deg outside air temp
>>and +5 deg C cabinet temp (fridge mode) it draws and average of .54
>>Amps. They show it as .54 amp hour per hour.
>>
>>I have a Engel 45 that I use as a freezer. Sure is nice to have
>>popsicles and ice cream in the desert! If you turn it up too much the
>>ice cream is too cold to scoop. So you have to keep it turned down a
>>bit.
>>
>>At home I also use it on 110V as a freezer.
>>
>>Temperature control of the unit is very good. It seems to hold within
>>1 degree so that's good for efficiency too.
>>
>>The only drawback I find is that I like it very quiet at night, this
>>is not super quiet. Even putting it outside the van still makes
>>noticeable noise, though not much. My opinion is that the
>>"swingmotor" is no quieter than a normal compressor fridge. It's hard
>>to beat the Vanagon Fridge for night time quiet.
>>
>>hth,
>>--
>> -Otmar-
>>82/86 Stretch Vanagon Westfalia GTI. "Power of two" Soon to be TDI.
>>http://www.evcl.com/vw
>>1 914 EV, 1 Insight Hybrid
>>
>>
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