My bad... copper is the second, losing only to silver, as a thermal conductor.
Enviado do meu iPhone > Em 30 de out. de 2020, à(s) 19:06, Luiz Alberto Saba <[email protected]> > escreveu: > > If my memory serves me, copper has the better conductivity of all the > periodic table... > > Enviado do meu iPhone > >> Em 30 de out. de 2020, à(s) 18:56, Attila Kinali <[email protected]> escreveu: >> >> Moin, >> >> I have been looking at heat capacities of different materials >> lately. One thing that struk me odd is, that the volumetric >> heat capacity of copper, which is the thing that most people >> use when building something that needs to have high heat capacity >> to get stable temperature, has only a volumetric heat capacity >> of 3.45 J/(cm^3·K). Meanwhile, the much cheaper iron has >> a volumetric heat capacity of 3.53 J/(cm^3·K) and steel >> even 3.75 J/(cm^3·K). >> >> In an OCXO, which is generally size limited, getting the most >> heat capacity in the limited volume would be the main goal, >> wouldn't it? Also optimizing for price would be a major thing. >> I can understand that iron is probably not the right choice >> due to its tendency to oxidize. But using a soft (annealed) steel >> would be easy to machine, cheaper per piece and give almost 10% >> higher heat capacity in the same volume. >> >> So why do people choose copper instead of steel? >> >> >> Attila Kinali >> >> PS: Fun fact: Water has a volumetric heat capacity of 4.18 J/(cm^3·K) >> at 25°C. We should fill OCXOs with water! :-D >> >> -- >> <JaberWorky> The bad part of Zurich is where the degenerates >> throw DARK chocolate at you. >> >> _______________________________________________ >> time-nuts mailing list -- [email protected] >> To unsubscribe, go to >> http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com >> and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
