Quote:
|
Originally Posted by Jabo
You are right that thermal resistance of a material is not changed by it's shape. We are not looking here at lumps of shapless raw materials but particular DEVICES made using dfferent materials.
Look at the big picture and any software is ust a tool for making some calcs not finding solutions. I use my brain to do it  |
No, I said that thermal resistance IS changed by shape. Resistivity (taken as the inverse of conductivity) is not affected by shape. This is just like electrical resistivity, which is a material property for, let's say, copper. That does not change, but you can increase the resistance of a copper wire by increasing its length.
And I did use my brain, that's how I eliminated the obviously unrealistic materials that still meet the strength and thermal conductivity requirements. Obviously brick, bamboo or glass would not be very easy to come by in washer form, but nylon or other polymers are more realistic.