Vanagon EuroVan
Previous messageNext messagePrevious in topicNext in topicPrevious by same authorNext by same authorPrevious page (July 1999, week 1)Back to main VANAGON pageJoin or leave VANAGON (or change settings)ReplyPost a new messageSearchProportional fontNon-proportional font
Date:         Thu, 1 Jul 1999 09:16:05 -0400
Reply-To:     David Beierl <synergx@IBM.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         David Beierl <synergx@IBM.NET>
Subject:      Re: Dometic question.
Comments: To: "W. Silva" <wsilva@CAPECOD.NET>
In-Reply-To:  <199907011211.IAA01058@mailhost.capecod.net>
Content-Type: text/plain; charset="us-ascii"; format=flowed

At 08:00 7/1/99 -0400, W. Silva wrote: >My question is: Does humidity have an effect on the cooling of the >Dometic?

Well it takes about 475 (small) calories to condense a gram of water from the air, and another 85 or so to freeze it. So that's some difference, especially if you keep opening the box. (That's why your drink gets warm so fast when it's humid, every gram of sweat will raise a twelve-ounce drink (no ice) about 2.8 degrees Fahrenheit (1.6 C), or melt about six grams of ice. Six grams of ice is one and a third teaspoons.)

I have a faint notion that water vapor in the air lessens its heat capacity, and therefor requires more airflow over the fins to achieve the same cooling, as well.

So I guarantee there's an effect. I don't have a feel for how significant it is to the Dometic. I think I saw a 650 Btu/hr rating on mine, in which case a gram of water would be about one third of a per cent of the one-hour capacity. Doesn't sound like much, but of course these things balance on a knife-edge...

david David Beierl - dbeierl@ibm.net


Back to: Top of message | Previous page | Main VANAGON page

Please note - During the past 17 years of operation, several gigabytes of Vanagon mail messages have been archived. Searching the entire collection will take up to five minutes to complete. Please be patient!


Return to the archives @ gerry.vanagon.com


The vanagon mailing list archives are copyright (c) 1994-2011, and may not be reproduced without the express written permission of the list administrators. Posting messages to this mailing list grants a license to the mailing list administrators to reproduce the message in a compilation, either printed or electronic. All compilations will be not-for-profit, with any excess proceeds going to the Vanagon mailing list.

Any profits from list compilations go exclusively towards the management and operation of the Vanagon mailing list and vanagon mailing list web site.