[time-nuts] Mass vs BTU Function

Mike S mikes at flatsurface.com
Thu Jan 27 20:31:52 EST 2011


At 07:53 PM 1/27/2011, jimlux wrote...
>I did do some googling and found this interesting statement in 
>Wikipedia
>Another way of stating this, is that the volume-specific heat capacity 
>(volumetric heat capacity) of solid elements is roughly a constant.

I'll admit that I'm prone to citing Wikipedia, but this is one case 
which clearly shows they're not authoritative. For just commonly 
available solid elements, there's a greater than 2:1 range. For 
time-nuts used to dealing with 10e-12 or smaller, that's no where near 
a "constant." Below are numbers I posted a bit ago for "hardware store" 
stuff, and one could no doubt find a much greater range in compounds, 
especially if you ignore availability/cost:

(substance) (specific heat) (density) (heat capacity?)
( ) (kJ/kg K) (g/ml^3)(kJ/l K)
Al 0.91 2.7 2.5
Cu 0.39 9.96 3.9
Pb 0.13 11.36 1.5
Fe 0.46 7.87 3.6
H2O 4.2 1.0 4.2






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