Date: Thu, 31 Oct 2013 18:17:07 -0500
Reply-To: JRodgers <jrodgers113@GMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: JRodgers <jrodgers113@GMAIL.COM>
Subject: Re: Quick and easy auxiliary heat
In-Reply-To: <CAO+YcsJsH0rr5HGbBwCyMYybcvEhPaYZ_CR+L69KeOurtPyDnQ@mail.gmail.com>
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From my days in Alaska I've still got an Alaska goose down sleeping
robe. Jack Frost - bring it on!!!
John
On 10/31/2013 5:51 PM, Al Knoll wrote:
> New dog? or two?
>
> Woolies?
>
> A legendary organic squirrel coat?
>
> Pensionerd.
>
> On Thu, Oct 24, 2013 at 6:49 PM, tom ring <taring@taring.org> wrote:
>> I am going to do a one night camp at Surly Darkness tomorrow night and have
>> been experimenting with ways to add some extra heat independent of my propane
>> catalytic unit.
>>
>> I am doing a couple of things, both are quite simple.
>>
>> First, preheat the interior as much as possible. I am using a 1200 watt
>> electric heater running at 500 watts (low). My current outside temperature is
>> 39F, and my van has been at 75F for over 24 hours. There is a lot of heat
>> stored in the interior, especially the 150 lbs of the battery bank.
>>
>> Second, to heat things up quickly (when the interior was at 37F yesterday), I
>> bought 2 4.5 gallon water containers from Fleet Farm. They actually hold 5.5
>> gallons or 46 lbs of water. My hot water temperature at home is 148F. If you
>> do some simple math where 1 lb of water heated 1 degree F, or cooled, is 1 BTU.
>> I am assuming the low temperature cutoff is 80F. So (148-80) * 46 is 3128
>> BTUs. I have 2 of those containers. That is more than 2 hours of my propane
>> 3000 BTU heater. I am using those during the preheat stage and will refill
>> them for the camping stage.
>>
>> I also plan to fill the tank in the van with the same temperature water and
>> leave the top cover open. I think that's another 11 gallons, so would add
>> 2*3128 or 6256 BTUs. Between that, the van 24 hour preheat, my body heat,
>> waste heat from the fridge, and the heater, I expect I will be very snug
>> tomorrow night at Darkness Day Eve. Overnight temperatures are expected to be
>> around freezing depending on cloud cover.
>>
>> I hope someone else from the list will be there. We see people from all over
>> the continent. Good beer, good people.
>>
>> tom
>>
>>
>> -----------------------------------------
>> Tom Ring K0TAR EN34hx
>>
>> Never attribute to engineers that into which politicians, lawyers,
>> accountants, and marketeers have poked their fingers.
>> -----------------------------------------
>
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