Posted by Kirk Grau on November 24, 2008 at 08:29:57 from (71.58.129.143):
In Reply to: Wind Chill posted by John B. on November 23, 2008 at 19:26:41:
This hits one of my pet peeves as well. Had a roommate in grad school (we were both MechEng. so lots of thermo and heat transfer type classes) always insisted on parking his car nose away from the wind. Smart guy, but could not get it across to him that the car was going to be at ambient regardless of the wind. Decided if he had trouble with it I would stop trying to explain it to anybody else.
Regarding the stock tank freezing... It is entirely possible to freeze the surface of water when ambient is still above 32 degF, but it has to do with the radiant heat loss to space on a good clear night not a wind chill. Black body of space is very close to absolute zero and can really suck the heat from the earth. Pay attention, on cloud covered nights it generally stays warmer overnight (hard to eliminate weather patterns in this observation, but you get the idea.)
Been a long time since I thought about heat transfer.
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