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post #11 of 27 Old 11-30-2006, 03:19 PM
 
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Originally Posted by hvacgaspiping View Post
Actually, aluminum is a slightly better conductor of heat than copper. Maybe you could do something similar with a soft drink can and have more surface area to transfer heat. Plus, it would be thinner and have greater ability to remove heat.
I really dont think aluminum is a better conductor of heat than copper..

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post #12 of 27 Old 11-30-2006, 03:23 PM
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Originally Posted by Kopi View Post
yep. Copper is better conductor or heat/electricity aswell. 's why its used in things like wires for electronics and heatsinks for computers. Aluminum is used aswell, but its cheaper i think
that's why most of the big transformers you see at your local power station use copper windings. to prevent them from burning out in the summer. or so i have heard. it's also cheap. but as for the coins i was thinking. if you have any Mexican coins (the really thick ones), i think their made of bronze which contains copper and i imagine that it's size would make it potentially a better for cooling than regular penny's. and i also saw these 2 pence British coins in my change bin that were about twice the size of a penny but those are worth about 5 cents each.

edit: i think that the coins are Cuban not Mexican

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post #13 of 27 Old 11-30-2006, 03:23 PM
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I remember way back in the 70`s that air conditioning manufacturers started using aluminum condenser and evaporator coils not only because aluminum was cheaper, but it transferred heat faster. The reason they went back to copper was that it was extremely difficult to fix a leak on aluminum in those applications, because the refrigerant oil that was present inside the tubes made it all but impossible to effectively solder a leak. Had that not been an issue, I believe that aluminum would still be used today in those applications.

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post #14 of 27 Old 11-30-2006, 03:25 PM
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EDIT: Never mind...Sorry.....

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***Beware all ye Men born of Woman, beware the Hemogoblins...biggrin.gif...If you argue with a Troll the Troll wins. Do not feed the Trolls.***
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***E8500 @ 5736 Mhz** E8600 @ 5751Mhz***E8400 @ Dead piece of junkQuote:
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Makes sense. Trolls have nickel plated red blood cells. Helps their copper based hemogoblin deal with the high aluminium content in their spleens.
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post #15 of 27 Old 11-30-2006, 09:55 PM
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Quote:
Originally Posted by hvacgaspiping View Post
I remember way back in the 70`s that air conditioning manufacturers started using aluminum condenser and evaporator coils not only because aluminum was cheaper, but it transferred heat faster. The reason they went back to copper was that it was extremely difficult to fix a leak on aluminum in those applications, because the refrigerant oil that was present inside the tubes made it all but impossible to effectively solder a leak. Had that not been an issue, I believe that aluminum would still be used today in those applications.
in the 70'a there was a copper shortage. i know copper is a better heat conductor though it is possible that they used aluminum as a replacement as it is somewhat effective. aluminum was used to replace allot of things that copper was used for like wires for homes, transformers (which sorta stuck) and even motors. as for soldering it is possible to solder Aluminum. in fact the only thing i haven't been able to solder is zink

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post #16 of 27 Old 11-30-2006, 09:57 PM
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Just FYI pennies have almost no copper in them they are mostly zinc.

EDIT: Ironically the nickel is mostly copper.

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post #17 of 27 Old 11-30-2006, 10:11 PM
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Quote:
Originally Posted by hvacgaspiping View Post
I remember way back in the 70`s that air conditioning manufacturers started using aluminum condenser and evaporator coils not only because aluminum was cheaper, but it transferred heat faster. The reason they went back to copper was that it was extremely difficult to fix a leak on aluminum in those applications, because the refrigerant oil that was present inside the tubes made it all but impossible to effectively solder a leak. Had that not been an issue, I believe that aluminum would still be used today in those applications.
well...while your story is probably true, it's more likely the fact they were short on copper.

Copper conducts heat better than aluminum. It's a fact.

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post #18 of 27 Old 11-30-2006, 10:58 PM
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Originally Posted by BFRD View Post
Just FYI pennies have almost no copper in them they are mostly zinc.

EDIT: Ironically the nickel is mostly copper.
this is true. you have to look for 1970's and older to get copper ones. as for the nickels is that true? maybe worth a check. and are those American nickels?

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post #19 of 27 Old 11-30-2006, 11:55 PM
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Quote:
Originally Posted by BFRD View Post
Just FYI pennies have almost no copper in them they are mostly zinc.

EDIT: Ironically the nickel is mostly copper.
wow so the nickel version would be the 5 cent upgrade? is there a way to melt the nickels together and what is the best glue to use? I have rubber cement, super glue, a hot glue gun and wood glue.

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post #20 of 27 Old 11-30-2006, 11:59 PM
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That's why he says pennies before 1982...I got some '75s!!!
That is so sweet...

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