You can make things go below the outside ambient air temperature through evaporation. It isn't the wind that is colder, it is the effect the water evaporating off the object - wind will accelerate this effect and will super cool it. This can be seen on chilly mornings were there is dew on the windscreen and it is about +1 or +2C and then you start driving, that water will freeze on the windscreen. Aircraft also have this issue as well. David Marshall Fast Forward Automotive Inc. 4356 Quesnel-Hixon Road Quesnel BC Canada V2J 6Z3 http://www.fastforward.ca mailto:sales@fastforward.ca Phone: (250) 992 7775 FAX: (250) 992 1160 - Vanagon Accessories and Engine Conversions - Vanagon, Transporter and Iltis Sales and Importation - European Lighting for most Volkswagen models
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-----Original Message----- From: Bruce Nadig [mailto:motorbruce@hotmail.com] Sent: September 3, 2005 10:18 AM To: mailinglist@FASTFORWARD.CA; vanagon@GERRY.VANAGON.COM Subject: RE: Best placement for outside air temperature sender?
Howdy All, Am I wrong on this or what? " I want to avoid places like the grille as there is the possibility of a super cooling effect if ... wind is blowing on it." I wouldn't think that wind would make a difference on a temperature sensor (even if it is wet). Fifty degree air is fifty degree air, right? And 100 degree air is 100 degree air, right? Cheers, Bruce motorbruce@hotmail.com >From: David Marshall <mailinglist@FASTFORWARD.CA> >Reply-To: David Marshall <mailinglist@FASTFORWARD.CA> >To: vanagon@GERRY.VANAGON.COM >Subject: Best placement for outside air temperature sender? >Date: Sat, 3 Sep 2005 10:00:49 -0700 > >I am in the process of installing a outside air temperature sender on my >Westfalia. The digital gauge requires a simple K or J type thermocouple >for >input. Where is the best place to mount it to get the most accurate >temperature in both town and highway driving? I want to avoid places like >the grille as there is the possibility of a super cooling effect if it is >wet and wind is blowing on it. I also want to avoid any heat sources like >the radiator and such too. I was thinking maybe in the forward section of >the rear intake tunnel for the engine air... >David Marshall > >Fast Forward Automotive Inc. >4356 Quesnel-Hixon Road >Quesnel BC Canada V2J 6Z3 > >Internet: www.fastforward.ca Email: sales@fastforward.ca >Phone: (250) 992 7775 > >- Vanagon Engine Conversions and Accessories >- Vanagon, Transporter and Iltis Sales and Importation >- Electrical harness fabrication and customization > >Due to the large volume of email we receive, PLEASE include previous >emails when responding. >This will allow us to read the complete dialogue in one message and will >result in quicker and more accurate responses. |
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