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Air Collector - Black Heat Paint vs Selective Paint? - Page 3

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Posted by nicksanspam on January 13, 2006, 6:37 pm
 


http://lib.tkk.fi/Diss/2004/isbn951227003X/


You have a scanning electron microscope, and so on? :-)

Nick


Posted by Morris Dovey on January 13, 2006, 7:26 pm
 
nicksanspam@ece.villanova.edu (in dq8s26$ln@acadia.ece.villanova.edu)
said:

| You have a scanning electron microscope, and so on? :-)

Hmmm. You just stirred up an interesting question. If two smooth, flat
metal absorber plates, one normal to the sun's rays and one aslant,
present the same (projected) area to the sun - will one absorb more
energy than the other?

--
Morris Dovey
DeSoto Solar
DeSoto, Iowa USA
http://www.iedu.com/DeSoto/solar.html



Posted by SolarFlaire on January 14, 2006, 3:33 am
 The one normal one will collect more heat as it has
less surface to reradiate heat away.


dq8s26$ln@acadia.ece.villanova.edu)

two smooth, flat

and one aslant,

one absorb more


Posted by daestrom on January 14, 2006, 3:49 pm
 

An interesting point.

Also, just about any surface reflects a different amount depending on the
angle of incoming sunlight.  More reflection, less absorption.

daestrom



Posted by SolarFlaire on January 14, 2006, 5:15 pm
 Yeah, I thought of that point, later, but I was
asleep...LOL

message

amount depending on the

absorption.


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