-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Zeke Yewdall Sent: Tuesday, May 16, 2006 8:54 PM To: Biofuel@sustainablelists.org Subject: Re: [Biofuel] Thermal conductivity Please help
This means basically that at 300K average temperature, the thermal conductivity is 149 W/(m*K). What the proper units are is actually W*m/(sq meter *K). Two of the meters cancel out to leave just one on the bottom, but it's easier to think of it with them still in there. If you think about trying to calculate heat transfer in watts per square meter, you need to cancel out the m on top of the thermal conductivity, and the K on the bottom. So, you multiply the conductivity by the delta T in Kelvins, which cancels the K. And you divide it by the thickness of the silicon you are transferring heat through (because a thicker piece will transfer less heat), which cancels out the m on top. This leaves units of W/m^2 for the units of the answer, which is what we were looking for. If we want total watts, we can multiply by the area of the heat transfer area, and cancel out the m^2, and are left with just watts. On 5/16/06, logan vilas <[EMAIL PROTECTED]> wrote: > Thermal conductivity of silicone (300 K) 149 W/(m.K) > > > Can anyone help me understand this. I've been trying to figure out how to > read this equasion for 2 days and all I got was a headache. > > Logan Vilas > > > _______________________________________________ > Biofuel mailing list > Biofuel@sustainablelists.org > http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org > > Biofuel at Journey to Forever: > http://journeytoforever.org/biofuel.html > > Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): > http://www.mail-archive.com/biofuel@sustainablelists.org/ > > _______________________________________________ Biofuel mailing list Biofuel@sustainablelists.org http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): http://www.mail-archive.com/biofuel@sustainablelists.org/ _______________________________________________ Biofuel mailing list Biofuel@sustainablelists.org http://sustainablelists.org/mailman/listinfo/biofuel_sustainablelists.org Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Search the combined Biofuel and Biofuels-biz list archives (50,000 messages): http://www.mail-archive.com/biofuel@sustainablelists.org/
